@fluidframework/sequence - npm Package Compare versions

Comparing version 0.42.2 to 0.43.0

dist/index.d.ts

@@ -5,3 +5,3 @@ /*!
  */
-export { DeserializeCallback, IIntervalHelpers, Interval, ISerializableInterval, ISerializedInterval, IntervalCollection, IntervalCollectionIterator, IntervalCollectionView, SequenceInterval, } from "./intervalCollection";
+export { DeserializeCallback, IIntervalHelpers, Interval, ISerializableInterval, ISerializedInterval, IntervalCollection, IntervalCollectionIterator, SequenceInterval, } from "./intervalCollection";
 export { IValueOpEmitter, } from "./mapKernelInterfaces";
@@ -8,0 +8,0 @@ export * from "./sharedString";

dist/index.d.ts.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA;;;GAGG;AAEH,OAAO,EACH,mBAAmB,EACnB,gBAAgB,EAChB,QAAQ,EACR,qBAAqB,EACrB,mBAAmB,EACnB,kBAAkB,EAClB,0BAA0B,EAC1B,sBAAsB,EACtB,gBAAgB,GACnB,MAAM,sBAAsB,CAAC;AAC9B,OAAO,EACH,eAAe,GAClB,MAAM,uBAAuB,CAAC;AAC/B,cAAc,gBAAgB,CAAC;AAC/B,cAAc,YAAY,CAAC;AAC3B,cAAc,mBAAmB,CAAC;AAClC,cAAc,sBAAsB,CAAC;AACrC,cAAc,kBAAkB,CAAC;AACjC,cAAc,wBAAwB,CAAC;AACvC,cAAc,wBAAwB,CAAC;AACvC,cAAc,gBAAgB,CAAC;AAC/B,cAAc,4BAA4B,CAAC"}
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA;;;GAGG;AAEH,OAAO,EACH,mBAAmB,EACnB,gBAAgB,EAChB,QAAQ,EACR,qBAAqB,EACrB,mBAAmB,EACnB,kBAAkB,EAClB,0BAA0B,EAC1B,gBAAgB,GACnB,MAAM,sBAAsB,CAAC;AAC9B,OAAO,EACH,eAAe,GAClB,MAAM,uBAAuB,CAAC;AAC/B,cAAc,gBAAgB,CAAC;AAC/B,cAAc,YAAY,CAAC;AAC3B,cAAc,mBAAmB,CAAC;AAClC,cAAc,sBAAsB,CAAC;AACrC,cAAc,kBAAkB,CAAC;AACjC,cAAc,wBAAwB,CAAC;AACvC,cAAc,wBAAwB,CAAC;AACvC,cAAc,gBAAgB,CAAC;AAC/B,cAAc,4BAA4B,CAAC"}

dist/index.js

@@ -17,3 +17,3 @@ "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.SequenceInterval = exports.IntervalCollectionView = exports.IntervalCollectionIterator = exports.IntervalCollection = exports.Interval = void 0;
+exports.SequenceInterval = exports.IntervalCollectionIterator = exports.IntervalCollection = exports.Interval = void 0;
 var intervalCollection_1 = require("./intervalCollection");
@@ -23,3 +23,2 @@ Object.defineProperty(exports, "Interval", { enumerable: true, get: function () { return intervalCollection_1.Interval; } });
 Object.defineProperty(exports, "IntervalCollectionIterator", { enumerable: true, get: function () { return intervalCollection_1.IntervalCollectionIterator; } });
-Object.defineProperty(exports, "IntervalCollectionView", { enumerable: true, get: function () { return intervalCollection_1.IntervalCollectionView; } });
 Object.defineProperty(exports, "SequenceInterval", { enumerable: true, get: function () { return intervalCollection_1.SequenceInterval; } });
@@ -26,0 +25,0 @@ __exportStar(require("./sharedString"), exports);

dist/index.js.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.js","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":";AAAA;;;GAGG;;;;;;;;;;;;;AAEH,2DAU8B;AAP1B,8GAAA,QAAQ,OAAA;AAGR,wHAAA,kBAAkB,OAAA;AAClB,gIAAA,0BAA0B,OAAA;AAC1B,4HAAA,sBAAsB,OAAA;AACtB,sHAAA,gBAAgB,OAAA;AAKpB,iDAA+B;AAC/B,6CAA2B;AAC3B,oDAAkC;AAClC,uDAAqC;AACrC,mDAAiC;AACjC,yDAAuC;AACvC,yDAAuC;AACvC,iDAA+B;AAC/B,6DAA2C","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\nexport {\n    DeserializeCallback,\n    IIntervalHelpers,\n    Interval,\n    ISerializableInterval,\n    ISerializedInterval,\n    IntervalCollection,\n    IntervalCollectionIterator,\n    IntervalCollectionView,\n    SequenceInterval,\n} from \"./intervalCollection\";\nexport {\n    IValueOpEmitter,\n} from \"./mapKernelInterfaces\";\nexport * from \"./sharedString\";\nexport * from \"./sequence\";\nexport * from \"./sequenceFactory\";\nexport * from \"./sequenceDeltaEvent\";\nexport * from \"./sharedSequence\";\nexport * from \"./sharedObjectSequence\";\nexport * from \"./sharedNumberSequence\";\nexport * from \"./sparsematrix\";\nexport * from \"./sharedIntervalCollection\";\n"]}
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":";AAAA;;;GAGG;;;;;;;;;;;;;AAEH,2DAS8B;AAN1B,8GAAA,QAAQ,OAAA;AAGR,wHAAA,kBAAkB,OAAA;AAClB,gIAAA,0BAA0B,OAAA;AAC1B,sHAAA,gBAAgB,OAAA;AAKpB,iDAA+B;AAC/B,6CAA2B;AAC3B,oDAAkC;AAClC,uDAAqC;AACrC,mDAAiC;AACjC,yDAAuC;AACvC,yDAAuC;AACvC,iDAA+B;AAC/B,6DAA2C","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\nexport {\n    DeserializeCallback,\n    IIntervalHelpers,\n    Interval,\n    ISerializableInterval,\n    ISerializedInterval,\n    IntervalCollection,\n    IntervalCollectionIterator,\n    SequenceInterval,\n} from \"./intervalCollection\";\nexport {\n    IValueOpEmitter,\n} from \"./mapKernelInterfaces\";\nexport * from \"./sharedString\";\nexport * from \"./sequence\";\nexport * from \"./sequenceFactory\";\nexport * from \"./sequenceDeltaEvent\";\nexport * from \"./sharedSequence\";\nexport * from \"./sharedObjectSequence\";\nexport * from \"./sharedNumberSequence\";\nexport * from \"./sparsematrix\";\nexport * from \"./sharedIntervalCollection\";\n"]}

dist/intervalCollection.d.ts

@@ -10,2 +10,3 @@ /*!
 import { IValueFactory, IValueOpEmitter, IValueOperation, IValueType } from "./mapKernelInterfaces";
+export declare const reservedIntervalIdKey = "intervalId";
 export interface ISerializedInterval {
@@ -33,2 +34,3 @@ sequenceNumber: number;
     constructor(start: number, end: number, props?: MergeTree.PropertySet);
+    getIntervalId(): string | undefined;
     getAdditionalPropertySets(): MergeTree.PropertySet[];
@@ -59,2 +61,3 @@ addPropertySet(props: MergeTree.PropertySet): void;
     overlaps(b: SequenceInterval): boolean;
+    getIntervalId(): string | undefined;
     union(b: SequenceInterval): SequenceInterval;
@@ -78,2 +81,4 @@ addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp): void;
     map(fn: (interval: TInterval) => void): void;
+    createLegacyId(start: number, end: number): string;
+    ensureSerializedId(serializedInterval: ISerializedInterval): void;
     gatherIterationResults(results: TInterval[], iteratesForward: boolean, start?: number, end?: number): void;
@@ -105,23 +110,2 @@ findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[];
 export declare type DeserializeCallback = (properties: MergeTree.PropertySet) => void;
-export declare class IntervalCollectionView<TInterval extends ISerializableInterval> extends EventEmitter {
-    private readonly client;
-    private readonly emitter;
-    private readonly localCollection;
-    private onDeserialize;
-    constructor(client: MergeTree.Client, savedSerializedIntervals: ISerializedInterval[], label: string, helpers: IIntervalHelpers<TInterval>, emitter: IValueOpEmitter);
-    attachDeserializer(onDeserialize: DeserializeCallback): void;
-    addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void;
-    findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[];
-    map(fn: (interval: TInterval) => void): void;
-    gatherIterationResults(results: TInterval[], iteratesForward: boolean, start?: number, end?: number): void;
-    previousInterval(pos: number): TInterval;
-    nextInterval(pos: number): TInterval;
-    on(event: "addInterval" | "deleteInterval", listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this;
-    add(start: number, end: number, intervalType: MergeTree.IntervalType, props?: MergeTree.PropertySet): TInterval;
-    delete(start: number, end: number): void;
-    addInternal(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage): TInterval;
-    deleteInterval(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage): this;
-    serializeInternal(): any[];
-    private attachDeserializerCore;
-}
 export declare class IntervalCollectionIterator<TInterval extends ISerializableInterval> {
@@ -136,3 +120,3 @@ private readonly results;
 }
-export declare class IntervalCollection<TInterval extends ISerializableInterval> {
+export declare class IntervalCollection<TInterval extends ISerializableInterval> extends EventEmitter {
     private readonly helpers;
@@ -142,10 +126,17 @@ private readonly requiresClient;
     private savedSerializedIntervals?;
-    private view;
+    private localCollection;
+    private onDeserialize;
+    private client;
     get attached(): boolean;
     constructor(helpers: IIntervalHelpers<TInterval>, requiresClient: boolean, emitter: IValueOpEmitter, serializedIntervals: ISerializedInterval[]);
     attachGraph(client: MergeTree.Client, label: string): void;
-    add(startPosition: number, endPosition: number, intervalType: MergeTree.IntervalType, props?: MergeTree.PropertySet): TInterval;
-    delete(startPosition: number, endPosition: number): void;
+    add(start: number, end: number, intervalType: MergeTree.IntervalType, props?: MergeTree.PropertySet): TInterval;
+    delete(start: number, end: number): void;
     addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void;
-    getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollectionView<TInterval>>;
+    attachDeserializer(onDeserialize: DeserializeCallback): void;
+    private attachDeserializerCore;
+    /**
+     * @deprecated - IntervalCollectionView has been removed. Please refer to IntervalCollection directly.
+     */
+    getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollection<TInterval>>;
     addInternal(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage): TInterval;
@@ -160,3 +151,8 @@ deleteInterval(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage): void;
     gatherIterationResults(results: TInterval[], iteratesForward: boolean, start?: number, end?: number): void;
+    findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[];
+    map(fn: (interval: TInterval) => void): void;
+    previousInterval(pos: number): TInterval;
+    nextInterval(pos: number): TInterval;
+    on(event: "addInterval" | "deleteInterval", listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this;
 }
 //# sourceMappingURL=intervalCollection.d.ts.map

dist/intervalCollection.d.ts.map

@@ -1,1 +0,1 @@
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+{"version":3,"file":"intervalCollection.d.ts","sourceRoot":"","sources":["../src/intervalCollection.ts"],"names":[],"mappings":"AAAA;;;GAGG;;AAIH,OAAO,EAAE,YAAY,EAAE,MAAM,QAAQ,CAAC;AACtC,OAAO,KAAK,SAAS,MAAM,4BAA4B,CAAC;AACxD,OAAO,EAAE,yBAAyB,EAAE,MAAM,sCAAsC,CAAC;AAEjF,OAAO,EAAE,aAAa,EAAE,eAAe,EAAE,eAAe,EAAE,UAAU,EAAE,MAAM,uBAAuB,CAAC;AAEpG,eAAO,MAAM,qBAAqB,eAAe,CAAC;AAElD,MAAM,WAAW,mBAAmB;IAChC,cAAc,EAAE,MAAM,CAAC;IACvB,KAAK,EAAE,MAAM,CAAC;IACd,GAAG,EAAE,MAAM,CAAC;IACZ,YAAY,EAAE,SAAS,CAAC,YAAY,CAAC;IACrC,UAAU,CAAC,EAAE,SAAS,CAAC,WAAW,CAAC;CACtC;AAED,MAAM,WAAW,qBAAsB,SAAQ,SAAS,CAAC,SAAS;IAC9D,UAAU,EAAE,SAAS,CAAC,WAAW,CAAC;IAClC,SAAS,CAAC,MAAM,EAAE,SAAS,CAAC,MAAM,OAAE;IACpC,aAAa,CAAC,KAAK,EAAE,SAAS,CAAC,WAAW,OAAE;CAC/C;AAED,MAAM,WAAW,gBAAgB,CAAC,SAAS,SAAS,qBAAqB;IACrE,WAAW,CAAC,CAAC,EAAE,SAAS,EAAE,CAAC,EAAE,SAAS,GAAG,MAAM,CAAC;IAChD,MAAM,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,EAC5C,MAAM,EAAE,SAAS,CAAC,MAAM,EAAE,YAAY,CAAC,EAAE,SAAS,CAAC,YAAY,GAAG,SAAS,CAAC;CACnF;AAED,qBAAa,QAAS,YAAW,qBAAqB;IAIvC,KAAK,EAAE,MAAM;IACb,GAAG,EAAE,MAAM;IAJf,UAAU,EAAE,SAAS,CAAC,WAAW,CAAC;IAClC,QAAQ,EAAE,SAAS,CAAC,WAAW,EAAE,CAAC;gBAE9B,KAAK,EAAE,MAAM,EACb,GAAG,EAAE,MAAM,EAClB,KAAK,CAAC,EAAE,SAAS,CAAC,WAAW;IAM1B,aAAa,IAAI,MAAM,GAAG,SAAS;IAInC,yBAAyB;IAIzB,cAAc,CAAC,KAAK,EAAE,SAAS,CAAC,WAAW;IAO3C,SAAS,CAAC,MAAM,EAAE,SAAS,CAAC,MAAM;IAkBlC,KAAK;IAIL,OAAO,CAAC,CAAC,EAAE,QAAQ;IASnB,YAAY,CAAC,CAAC,EAAE,QAAQ;IAIxB,UAAU,CAAC,CAAC,EAAE,QAAQ;IAItB,QAAQ,CAAC,CAAC,EAAE,QAAQ;IAMpB,KAAK,CAAC,CAAC,EAAE,QAAQ;IAKjB,aAAa;IAIb,aAAa,CAAC,QAAQ,EAAE,SAAS,CAAC,WAAW,EAAE,EAAE,CAAC,EAAE,SAAS,CAAC,YAAY;CAGpF;AAED,qBAAa,gBAAiB,YAAW,qBAAqB;IAK/C,KAAK,EAAE,SAAS,CAAC,cAAc;IAC/B,GAAG,EAAE,SAAS,CAAC,cAAc;IAC7B,YAAY,EAAE,SAAS,CAAC,YAAY;IANxC,UAAU,EAAE,SAAS,CAAC,WAAW,CAAC;IACzC,OAAO,CAAC,QAAQ,CAAC,cAAc,CAAsB;gBAG1C,KAAK,EAAE,SAAS,CAAC,cAAc,EAC/B,GAAG,EAAE,SAAS,CAAC,cAAc,EAC7B,YAAY,EAAE,SAAS,CAAC,YAAY,EAC3C,KAAK,CAAC,EAAE,SAAS,CAAC,WAAW;IAM1B,SAAS,CAAC,MAAM,EAAE,SAAS,CAAC,MAAM;IAelC,KAAK;IAIL,OAAO,CAAC,CAAC,EAAE,gBAAgB;IAS3B,YAAY,CAAC,CAAC,EAAE,gBAAgB;IAIhC,UAAU,CAAC,CAAC,EAAE,gBAAgB;IAI9B,QAAQ,CAAC,CAAC,EAAE,gBAAgB;IAS5B,aAAa,IAAI,MAAM,GAAG,SAAS;IAInC,KAAK,CAAC,CAAC,EAAE,gBAAgB;IAKzB,aAAa,CAAC,QAAQ,EAAE,SAAS,CAAC,WAAW,EAAE,EAAE,CAAC,EAAE,SAAS,CAAC,YAAY;IAI1E,WAAW,CAAC,MAAM,EAAE,MAAM,EAAE,IAAI,EAAE,MAAM;IAM/C,OAAO,CAAC,aAAa;CAiBxB;AAuDD,wBAAgB,+BAA+B,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,EAAE,QAAQ,YAGvE;AAED,wBAAgB,mBAAmB,CAAC,QAAQ,CAAC,EAAE,SAAS,CAAC,wBAAwB,CAAC,QAAQ,CAAC,qCAY1F;AAED,qBAAa,uBAAuB,CAAC,SAAS,SAAS,qBAAqB;IAOpE,OAAO,CAAC,QAAQ,CAAC,MAAM;IACvB,OAAO,CAAC,QAAQ,CAAC,KAAK;IACtB,OAAO,CAAC,QAAQ,CAAC,OAAO;IAR5B,OAAO,CAAC,QAAQ,CAAC,YAAY,CAA2C;IACxE,OAAO,CAAC,QAAQ,CAAC,eAAe,CAA+C;IAC/E,OAAO,CAAC,gBAAgB,CAAgD;IACxE,OAAO,CAAC,mBAAmB,CAAiD;gBAGvD,MAAM,EAAE,SAAS,CAAC,MAAM,EACxB,KAAK,EAAE,MAAM,EACb,OAAO,EAAE,gBAAgB,CAAC,SAAS,CAAC;IAMlD,mBAAmB,CAAC,gBAAgB,EAAE,SAAS,CAAC,wBAAwB,CAAC,SAAS,CAAC;IAYnF,GAAG,CAAC,EAAE,EAAE,CAAC,QAAQ,EAAE,SAAS,KAAK,IAAI;IAIrC,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,GAAG,MAAM;IAMlD,kBAAkB,CAAC,kBAAkB,EAAE,mBAAmB;IAa1D,sBAAsB,CACzB,OAAO,EAAE,SAAS,EAAE,EACpB,eAAe,EAAE,OAAO,EACxB,KAAK,CAAC,EAAE,MAAM,EACd,GAAG,CAAC,EAAE,MAAM;IA4ET,wBAAwB,CAAC,aAAa,EAAE,MAAM,EAAE,WAAW,EAAE,MAAM;IAiBnE,gBAAgB,CAAC,GAAG,EAAE,MAAM;IAS5B,YAAY,CAAC,GAAG,EAAE,MAAM;IASxB,cAAc,CAAC,aAAa,EAAE,MAAM,EAAE,WAAW,EAAE,MAAM;IAQzD,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,EAAE,YAAY,EAAE,SAAS,CAAC,YAAY;IAK/E,WAAW,CACd,KAAK,EAAE,MAAM,EACb,GAAG,EAAE,MAAM,EACX,YAAY,EAAE,SAAS,CAAC,YAAY,EACpC,KAAK,CAAC,EAAE,SAAS,CAAC,WAAW;IAgB1B,SAAS;CAMnB;AAuBD,qBAAa,mCACT,YAAW,UAAU,CAAC,kBAAkB,CAAC,gBAAgB,CAAC,CAAC;IAC3D,OAAc,IAAI,SAAoC;IAEtD,IAAW,IAAI,IAAI,MAAM,CAExB;IAED,IAAW,OAAO,IAAI,aAAa,CAAC,kBAAkB,CAAC,gBAAgB,CAAC,CAAC,CAExE;IAED,IAAW,GAAG,IAAI,GAAG,CAAC,MAAM,EAAE,eAAe,CAAC,kBAAkB,CAAC,gBAAgB,CAAC,CAAC,CAAC,CAEnF;IAED,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,QAAQ,CACY;IAE5C,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,IAAI,CAyBhB;CACf;AAgCD,qBAAa,2BACT,YAAW,UAAU,CAAC,kBAAkB,CAAC,QAAQ,CAAC,CAAC;IACnD,OAAc,IAAI,SAA8B;IAEhD,IAAW,IAAI,IAAI,MAAM,CAExB;IAED,IAAW,OAAO,IAAI,aAAa,CAAC,kBAAkB,CAAC,QAAQ,CAAC,CAAC,CAEhE;IAED,IAAW,GAAG,IAAI,GAAG,CAAC,MAAM,EAAE,eAAe,CAAC,kBAAkB,CAAC,QAAQ,CAAC,CAAC,CAAC,CAE3E;IAED,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,QAAQ,CACI;IACpC,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,IAAI,CAyBhB;CACf;AAED,oBAAY,mBAAmB,GAAG,CAAC,UAAU,EAAE,SAAS,CAAC,WAAW,KAAK,IAAI,CAAC;AAE9E,qBAAa,0BAA0B,CAAC,SAAS,SAAS,qBAAqB;IAC3E,OAAO,CAAC,QAAQ,CAAC,OAAO,CAAc;IACtC,OAAO,CAAC,KAAK,CAAS;gBAGlB,UAAU,EAAE,kBAAkB,CAAC,SAAS,CAAC,EACzC,eAAe,GAAE,OAAc,EAC/B,KAAK,CAAC,EAAE,MAAM,EACd,GAAG,CAAC,EAAE,MAAM;IAOT,IAAI;;;;CAcd;AAED,qBAAa,kBAAkB,CAAC,SAAS,SAAS,qBAAqB,CAAE,SAAQ,YAAY;IAW7E,OAAO,CAAC,QAAQ,CAAC,OAAO;IAA+B,OAAO,CAAC,QAAQ,CAAC,cAAc;IAC9F,OAAO,CAAC,QAAQ,CAAC,OAAO;IAX5B,OAAO,CAAC,wBAAwB,CAAC,CAAwB;IACzD,OAAO,CAAC,eAAe,CAAqC;IAC5D,OAAO,CAAC,aAAa,CAAsB;IAC3C,OAAO,CAAC,MAAM,CAAmB;IAEjC,IAAW,QAAQ,IAAI,OAAO,CAG7B;gBAE4B,OAAO,EAAE,gBAAgB,CAAC,SAAS,CAAC,EAAmB,cAAc,EAAE,OAAO,EACtF,OAAO,EAAE,eAAe,EACzC,mBAAmB,EAAE,mBAAmB,EAAE;IAKvC,WAAW,CAAC,MAA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dist/intervalCollection.js

@@ -26,6 +26,8 @@ "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.IntervalCollection = exports.IntervalCollectionIterator = exports.IntervalCollectionView = exports.IntervalCollectionValueType = exports.SequenceIntervalCollectionValueType = exports.LocalIntervalCollection = exports.createIntervalIndex = exports.defaultIntervalConflictResolver = exports.SequenceInterval = exports.Interval = void 0;
+exports.IntervalCollection = exports.IntervalCollectionIterator = exports.IntervalCollectionValueType = exports.SequenceIntervalCollectionValueType = exports.LocalIntervalCollection = exports.createIntervalIndex = exports.defaultIntervalConflictResolver = exports.SequenceInterval = exports.Interval = exports.reservedIntervalIdKey = void 0;
 /* eslint-disable no-bitwise */
 const events_1 = require("events");
 const MergeTree = __importStar(require("@fluidframework/merge-tree"));
+const uuid_1 = require("uuid");
+exports.reservedIntervalIdKey = "intervalId";
 class Interval {
@@ -39,2 +41,6 @@ constructor(start, end, props) {
     }
+    getIntervalId() {
+        var _a, _b;
+        return (_b = (_a = this.properties) === null || _a === void 0 ? void 0 : _a[exports.reservedIntervalIdKey]) === null || _b === void 0 ? void 0 : _b.toString();
+    }
     getAdditionalPropertySets() {
@@ -148,2 +154,6 @@ return this.auxProps;
     }
+    getIntervalId() {
+        var _a, _b;
+        return (_b = (_a = this.properties) === null || _a === void 0 ? void 0 : _a[exports.reservedIntervalIdKey]) === null || _b === void 0 ? void 0 : _b.toString();
+    }
     union(b) {
@@ -264,2 +274,17 @@ return new SequenceInterval(this.start.min(b.start), this.end.max(b.end), this.intervalType);
     }
+    createLegacyId(start, end) {
+        // Create a non-unique ID based on start and end to be used on intervals that come from legacy clients
+        // without ID's.
+        return `${start}-${end}`;
+    }
+    ensureSerializedId(serializedInterval) {
+        var _a;
+        if (((_a = serializedInterval.properties) === null || _a === void 0 ? void 0 : _a[exports.reservedIntervalIdKey]) === undefined) {
+            // An interval came over the wire without an ID, so create a non-unique one based on start/end.
+            // This will allow all clients to refer to this interval consistently.
+            serializedInterval.properties = MergeTree.addProperties(serializedInterval.properties, {
+                [exports.reservedIntervalIdKey]: this.createLegacyId(serializedInterval.start, serializedInterval.end),
+            });
+        }
+    }
     gatherIterationResults(results, iteratesForward, start, end) {
@@ -367,2 +392,5 @@ if (this.intervalTree.intervals.isEmpty()) {
             }
+            if (interval.properties[exports.reservedIntervalIdKey] === undefined) {
+                interval.properties[exports.reservedIntervalIdKey] = uuid_1.v4();
+            }
             this.intervalTree.put(interval, this.conflictResolver);
@@ -494,40 +522,56 @@ this.endIntervalTree.put(interval, interval, this.endConflictResolver);
     ]]);
-class IntervalCollectionView extends events_1.EventEmitter {
-    constructor(client, savedSerializedIntervals, label, helpers, emitter) {
+class IntervalCollectionIterator {
+    constructor(collection, iteratesForward = true, start, end) {
+        this.results = [];
+        this.index = 0;
+        collection.gatherIterationResults(this.results, iteratesForward, start, end);
+    }
+    next() {
+        let _value;
+        let _done = true;
+        if (this.index < this.results.length) {
+            _value = this.results[this.index++];
+            _done = false;
+        }
+        return {
+            value: _value,
+            done: _done,
+        };
+    }
+}
+exports.IntervalCollectionIterator = IntervalCollectionIterator;
+class IntervalCollection extends events_1.EventEmitter {
+    constructor(helpers, requiresClient, emitter, serializedIntervals) {
         super();
-        this.client = client;
+        this.helpers = helpers;
+        this.requiresClient = requiresClient;
         this.emitter = emitter;
+        this.savedSerializedIntervals = serializedIntervals;
+    }
+    get attached() {
+        // return !!this.view;
+        return !!this.localCollection;
+    }
+    attachGraph(client, label) {
+        if (this.attached) {
+            throw new Error("Only supports one Sequence attach");
+        }
+        if ((client === undefined) && (this.requiresClient)) {
+            throw new Error("Client required for this collection");
+        }
         // Instantiate the local interval collection based on the saved intervals
-        this.localCollection = new LocalIntervalCollection(client, label, helpers);
-        if (savedSerializedIntervals) {
-            for (const serializedInterval of savedSerializedIntervals) {
+        this.client = client;
+        this.localCollection = new LocalIntervalCollection(client, label, this.helpers);
+        if (this.savedSerializedIntervals) {
+            for (const serializedInterval of this.savedSerializedIntervals) {
+                this.localCollection.ensureSerializedId(serializedInterval);
                 this.localCollection.addInterval(serializedInterval.start, serializedInterval.end, serializedInterval.intervalType, serializedInterval.properties);
             }
         }
+        this.savedSerializedIntervals = undefined;
     }
-    attachDeserializer(onDeserialize) {
-        this.attachDeserializerCore(onDeserialize);
-    }
-    addConflictResolver(conflictResolver) {
-        this.localCollection.addConflictResolver(conflictResolver);
-    }
-    findOverlappingIntervals(startPosition, endPosition) {
-        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);
-    }
-    map(fn) {
-        this.localCollection.map(fn);
-    }
-    gatherIterationResults(results, iteratesForward, start, end) {
-        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);
-    }
-    previousInterval(pos) {
-        return this.localCollection.previousInterval(pos);
-    }
-    nextInterval(pos) {
-        return this.localCollection.nextInterval(pos);
-    }
-    on(event, listener) {
-        return super.on(event, listener);
-    }
     add(start, end, intervalType, props) {
+        if (!this.attached) {
+            throw new Error("attach must be called prior to adding intervals");
+        }
         let seq = 0;
@@ -548,2 +592,5 @@ if (this.client) {
         let sequenceNumber = 0;
+        if (!this.attached) {
+            throw new Error("attach must be called prior to deleting intervals");
+        }
         if (this.client) {
@@ -560,4 +607,43 @@ sequenceNumber = this.client.getCurrentSeq();
     }
-    // TODO: error cases
+    addConflictResolver(conflictResolver) {
+        if (!this.attached) {
+            throw new Error("attachSequence must be called");
+        }
+        this.localCollection.addConflictResolver(conflictResolver);
+    }
+    attachDeserializer(onDeserialize) {
+        this.attachDeserializerCore(onDeserialize);
+    }
+    attachDeserializerCore(onDeserialize) {
+        // If no deserializer is specified can skip all processing work
+        if (!onDeserialize) {
+            return;
+        }
+        // Start by storing the callbacks so that any subsequent modifications make use of them
+        this.onDeserialize = onDeserialize;
+        // Trigger the async prepare work across all values in the collection
+        this.localCollection.map((interval) => {
+            this.onDeserialize(interval);
+        });
+    }
+    /**
+     * @deprecated - IntervalCollectionView has been removed. Please refer to IntervalCollection directly.
+     */
+    async getView(onDeserialize) {
+        if (!this.attached) {
+            return Promise.reject(new Error("attachSequence must be called prior to retrieving the view"));
+        }
+        // Attach custom deserializers if specified
+        if (onDeserialize) {
+            this.attachDeserializer(onDeserialize);
+        }
+        return this;
+    }
     addInternal(serializedInterval, local, op) {
+        if (!this.attached) {
+            throw new Error("attachSequence must be called");
+        }
+        if (!local) {
+            this.localCollection.ensureSerializedId(serializedInterval);
+        }
         const interval = this.localCollection.addInterval(serializedInterval.start, serializedInterval.end, serializedInterval.intervalType, serializedInterval.properties);
@@ -579,2 +665,5 @@ if (interval) {
     deleteInterval(serializedInterval, local, op) {
+        if (!this.attached) {
+            throw new Error("attach must be called prior to deleting intervals");
+        }
         const interval = this.localCollection.removeInterval(serializedInterval.start, serializedInterval.end);
@@ -593,105 +682,9 @@ if (interval) {
         this.emit("deleteInterval", interval, local, op);
-        return this;
     }
     serializeInternal() {
-        // eslint-disable-next-line @typescript-eslint/no-unsafe-return
-        return this.localCollection.serialize();
-    }
-    attachDeserializerCore(onDeserialize) {
-        // If no deserializer is specified can skip all processing work
-        if (!onDeserialize) {
-            return;
-        }
-        // Start by storing the callbacks so that any subsequent modifications make use of them
-        this.onDeserialize = onDeserialize;
-        // Trigger the async prepare work across all values in the collection
-        this.localCollection.map((interval) => {
-            this.onDeserialize(interval);
-        });
-    }
-}
-exports.IntervalCollectionView = IntervalCollectionView;
-class IntervalCollectionIterator {
-    constructor(collection, iteratesForward = true, start, end) {
-        this.results = [];
-        this.index = 0;
-        collection.gatherIterationResults(this.results, iteratesForward, start, end);
-    }
-    next() {
-        let _value;
-        let _done = true;
-        if (this.index < this.results.length) {
-            _value = this.results[this.index++];
-            _done = false;
-        }
-        return {
-            value: _value,
-            done: _done,
-        };
-    }
-}
-exports.IntervalCollectionIterator = IntervalCollectionIterator;
-class IntervalCollection {
-    constructor(helpers, requiresClient, emitter, serializedIntervals) {
-        this.helpers = helpers;
-        this.requiresClient = requiresClient;
-        this.emitter = emitter;
-        this.savedSerializedIntervals = serializedIntervals;
-    }
-    get attached() {
-        return !!this.view;
-    }
-    attachGraph(client, label) {
-        if (this.view) {
-            throw new Error("Only supports one Sequence attach");
-        }
-        if ((client === undefined) && (this.requiresClient)) {
-            throw new Error("Client required for this collection");
-        }
-        this.view = new IntervalCollectionView(client, this.savedSerializedIntervals, label, this.helpers, this.emitter);
-        this.savedSerializedIntervals = undefined;
-    }
-    add(startPosition, endPosition, intervalType, props) {
-        if (!this.view) {
-            throw new Error("attach must be called prior to adding intervals");
-        }
-        return this.view.add(startPosition, endPosition, intervalType, props);
-    }
-    delete(startPosition, endPosition) {
-        if (!this.view) {
-            throw new Error("attach must be called prior to deleting intervals");
-        }
-        this.view.delete(startPosition, endPosition);
-    }
-    addConflictResolver(conflictResolver) {
-        this.view.addConflictResolver(conflictResolver);
-    }
-    async getView(onDeserialize) {
-        if (!this.view) {
-            return Promise.reject(new Error("attachSequence must be called prior to retrieving the view"));
-        }
-        // Attach custom deserializers if specified
-        if (onDeserialize) {
-            this.view.attachDeserializer(onDeserialize);
-        }
-        return this.view;
-    }
-    addInternal(serializedInterval, local, op) {
-        if (!this.view) {
+        if (!this.attached) {
             throw new Error("attachSequence must be called");
         }
-        return this.view.addInternal(serializedInterval, local, op);
-    }
-    deleteInterval(serializedInterval, local, op) {
-        if (!this.view) {
-            throw new Error("attach must be called prior to deleting intervals");
-        }
-        this.view.deleteInterval(serializedInterval, local, op);
-    }
-    serializeInternal() {
-        if (!this.view) {
-            throw new Error("attachSequence must be called");
-        }
         // eslint-disable-next-line @typescript-eslint/no-unsafe-return
-        return this.view.serializeInternal();
+        return this.localCollection.serialize();
     }
@@ -719,9 +712,24 @@ [Symbol.iterator]() {
     gatherIterationResults(results, iteratesForward, start, end) {
-        if (!this.view) {
+        if (!this.attached) {
             return;
         }
-        this.view.gatherIterationResults(results, iteratesForward, start, end);
+        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);
     }
+    findOverlappingIntervals(startPosition, endPosition) {
+        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);
+    }
+    map(fn) {
+        this.localCollection.map(fn);
+    }
+    previousInterval(pos) {
+        return this.localCollection.previousInterval(pos);
+    }
+    nextInterval(pos) {
+        return this.localCollection.nextInterval(pos);
+    }
+    on(event, listener) {
+        return super.on(event, listener);
+    }
 }
 exports.IntervalCollection = IntervalCollection;
 //# sourceMappingURL=intervalCollection.js.map

dist/intervalCollection.js.map

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* Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\n/* eslint-disable no-bitwise */\n\nimport { EventEmitter } from \"events\";\nimport * as MergeTree from \"@fluidframework/merge-tree\";\nimport { ISequencedDocumentMessage } from \"@fluidframework/protocol-definitions\";\n\nimport { IValueFactory, IValueOpEmitter, IValueOperation, IValueType } from \"./mapKernelInterfaces\";\n\nexport interface ISerializedInterval {\n    sequenceNumber: number;\n    start: number;\n    end: number;\n    intervalType: MergeTree.IntervalType;\n    properties?: MergeTree.PropertySet;\n}\n\nexport interface ISerializableInterval extends MergeTree.IInterval {\n    properties: MergeTree.PropertySet;\n    serialize(client: MergeTree.Client);\n    addProperties(props: MergeTree.PropertySet);\n}\n\nexport interface IIntervalHelpers<TInterval extends ISerializableInterval> {\n    compareEnds(a: TInterval, b: TInterval): number;\n    create(label: string, start: number, end: number,\n        client: MergeTree.Client, intervalType?: MergeTree.IntervalType): TInterval;\n}\n\nexport class Interval implements ISerializableInterval {\n    public properties: MergeTree.PropertySet;\n    public auxProps: MergeTree.PropertySet[];\n    constructor(\n        public start: number,\n        public end: number,\n        props?: MergeTree.PropertySet) {\n        if (props) {\n            this.addProperties(props);\n        }\n    }\n\n    public getAdditionalPropertySets() {\n        return this.auxProps;\n    }\n\n    public addPropertySet(props: MergeTree.PropertySet) {\n        if (this.auxProps === undefined) {\n            this.auxProps = [];\n        }\n        this.auxProps.push(props);\n    }\n\n    public serialize(client: MergeTree.Client) {\n        let seq = 0;\n        if (client) {\n            seq = client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            end: this.end,\n            intervalType: 0,\n            sequenceNumber: seq,\n            start: this.start,\n        };\n        if (this.properties) {\n            serializedInterval.properties = this.properties;\n        }\n        return serializedInterval;\n    }\n\n    public clone() {\n        return new Interval(this.start, this.end, this.properties);\n    }\n\n    public compare(b: Interval) {\n        const startResult = this.compareStart(b);\n        if (startResult === 0) {\n            return this.compareEnd(b);\n        } else {\n            return startResult;\n        }\n    }\n\n    public compareStart(b: Interval) {\n        return this.start - b.start;\n    }\n\n    public compareEnd(b: Interval) {\n        return this.end - b.end;\n    }\n\n    public overlaps(b: Interval) {\n        const result = (this.start < b.end) &&\n            (this.end >= b.start);\n        return result;\n    }\n\n    public union(b: Interval) {\n        return new Interval(Math.min(this.start, b.start),\n            Math.max(this.end, b.end), this.properties);\n    }\n\n    public getProperties() {\n        return this.properties;\n    }\n\n    public addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp) {\n        this.properties = MergeTree.addProperties(this.properties, newProps, op);\n    }\n}\n\nexport class SequenceInterval implements ISerializableInterval {\n    public properties: MergeTree.PropertySet;\n    private readonly checkMergeTree: MergeTree.MergeTree;\n\n    constructor(\n        public start: MergeTree.LocalReference,\n        public end: MergeTree.LocalReference,\n        public intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet) {\n        if (props) {\n            this.addProperties(props);\n        }\n    }\n\n    public serialize(client: MergeTree.Client) {\n        const startPosition = this.start.toPosition();\n        const endPosition = this.end.toPosition();\n        const serializedInterval: ISerializedInterval = {\n            end: endPosition,\n            intervalType: this.intervalType,\n            sequenceNumber: client.getCurrentSeq(),\n            start: startPosition,\n        };\n        if (this.properties) {\n            serializedInterval.properties = this.properties;\n        }\n        return serializedInterval;\n    }\n\n    public clone() {\n        return new SequenceInterval(this.start, this.end, this.intervalType);\n    }\n\n    public compare(b: SequenceInterval) {\n        const startResult = this.compareStart(b);\n        if (startResult === 0) {\n            return this.compareEnd(b);\n        } else {\n            return startResult;\n        }\n    }\n\n    public compareStart(b: SequenceInterval) {\n        return this.start.compare(b.start);\n    }\n\n    public compareEnd(b: SequenceInterval) {\n        return this.end.compare(b.end);\n    }\n\n    public overlaps(b: SequenceInterval) {\n        const result = (this.start.compare(b.end) < 0) &&\n            (this.end.compare(b.start) >= 0);\n        if (this.checkMergeTree) {\n            this.checkOverlaps(b, result);\n        }\n        return result;\n    }\n\n    public union(b: SequenceInterval) {\n        return new SequenceInterval(this.start.min(b.start),\n            this.end.max(b.end), this.intervalType);\n    }\n\n    public addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp) {\n        this.properties = MergeTree.addProperties(this.properties, newProps, op);\n    }\n\n    public overlapsPos(bstart: number, bend: number) {\n        const startPos = this.start.toPosition();\n        const endPos = this.start.toPosition();\n        return (endPos > bstart) && (startPos < bend);\n    }\n\n    private checkOverlaps(b: SequenceInterval, result: boolean) {\n        const astart = this.start.toPosition();\n        const bstart = b.start.toPosition();\n        const aend = this.end.toPosition();\n        const bend = b.end.toPosition();\n        const checkResult = ((astart < bend) && (bstart < aend));\n        if (checkResult !== result) {\n            // eslint-disable-next-line max-len\n            console.log(`check mismatch: res ${result} ${this.start.segment === b.end.segment} ${b.start.segment === this.end.segment}`);\n            console.log(`as ${astart} ae ${aend} bs ${bstart} be ${bend}`);\n            console.log(`as ${MergeTree.ordinalToArray(this.start.segment.ordinal)}@${this.start.offset}`);\n            console.log(`ae ${MergeTree.ordinalToArray(this.end.segment.ordinal)}@${this.end.offset}`);\n            console.log(`bs ${MergeTree.ordinalToArray(b.start.segment.ordinal)}@${b.start.offset}`);\n            console.log(`be ${MergeTree.ordinalToArray(b.end.segment.ordinal)}@${b.end.offset}`);\n            console.log(this.checkMergeTree.nodeToString(b.start.segment.parent, \"\"));\n        }\n    }\n}\n\nfunction createPositionReference(\n    client: MergeTree.Client,\n    pos: number,\n    refType: MergeTree.ReferenceType): MergeTree.LocalReference {\n    const segoff = client.getContainingSegment(pos);\n    if (segoff && segoff.segment) {\n        const lref = new MergeTree.LocalReference(client, segoff.segment, segoff.offset, refType);\n        if (refType !== MergeTree.ReferenceType.Transient) {\n            client.addLocalReference(lref);\n        }\n        return lref;\n    }\n    return new MergeTree.LocalReference(client, undefined);\n}\n\nfunction createSequenceInterval(\n    label: string,\n    start: number,\n    end: number,\n    client: MergeTree.Client,\n    intervalType: MergeTree.IntervalType): SequenceInterval {\n    let beginRefType = MergeTree.ReferenceType.RangeBegin;\n    let endRefType = MergeTree.ReferenceType.RangeEnd;\n    if (intervalType === MergeTree.IntervalType.Nest) {\n        beginRefType = MergeTree.ReferenceType.NestBegin;\n        endRefType = MergeTree.ReferenceType.NestEnd;\n    } else if (intervalType === MergeTree.IntervalType.Transient) {\n        beginRefType = MergeTree.ReferenceType.Transient;\n        endRefType = MergeTree.ReferenceType.Transient;\n    }\n\n    // TODO: Should SlideOnRemove be the default behavior?\n    if (intervalType & MergeTree.IntervalType.SlideOnRemove) {\n        beginRefType |= MergeTree.ReferenceType.SlideOnRemove;\n        endRefType |= MergeTree.ReferenceType.SlideOnRemove;\n    }\n\n    const startLref = createPositionReference(client, start, beginRefType);\n    const endLref = createPositionReference(client, end, endRefType);\n    if (startLref && endLref) {\n        startLref.pairedRef = endLref;\n        endLref.pairedRef = startLref;\n        const rangeProp = {\n            [MergeTree.reservedRangeLabelsKey]: [label],\n        };\n        startLref.addProperties(rangeProp);\n        endLref.addProperties(rangeProp);\n\n        const ival = new SequenceInterval(startLref, endLref, intervalType, rangeProp);\n        return ival;\n    }\n}\n\nexport function defaultIntervalConflictResolver(a: Interval, b: Interval) {\n    a.addPropertySet(b.properties);\n    return a;\n}\n\nexport function createIntervalIndex(conflict?: MergeTree.IntervalConflictResolver<Interval>) {\n    const helpers: IIntervalHelpers<Interval> = {\n        compareEnds: compareIntervalEnds,\n        create: createInterval,\n    };\n    const lc = new LocalIntervalCollection<Interval>(undefined, \"\", helpers);\n    if (conflict) {\n        lc.addConflictResolver(conflict);\n    } else {\n        lc.addConflictResolver(defaultIntervalConflictResolver);\n    }\n    return lc;\n}\n\nexport class LocalIntervalCollection<TInterval extends ISerializableInterval> {\n    private readonly intervalTree = new MergeTree.IntervalTree<TInterval>();\n    private readonly endIntervalTree: MergeTree.RedBlackTree<TInterval, TInterval>;\n    private conflictResolver: MergeTree.IntervalConflictResolver<TInterval>;\n    private endConflictResolver: MergeTree.ConflictAction<TInterval, TInterval>;\n\n    constructor(\n        private readonly client: MergeTree.Client,\n        private readonly label: string,\n        private readonly helpers: IIntervalHelpers<TInterval>) {\n        this.endIntervalTree =\n            // eslint-disable-next-line @typescript-eslint/unbound-method\n            new MergeTree.RedBlackTree<TInterval, TInterval>(helpers.compareEnds);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>) {\n        this.conflictResolver = conflictResolver;\n        this.endConflictResolver =\n            (key: TInterval, currentKey: TInterval) => {\n                const ival = this.conflictResolver(key, currentKey);\n                return {\n                    data: ival,\n                    key: ival,\n                };\n            };\n    }\n\n    public map(fn: (interval: TInterval) => void) {\n        this.intervalTree.map(fn);\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        if (this.intervalTree.intervals.isEmpty()) {\n            return;\n        }\n\n        if (start === undefined && end === undefined) {\n            // No start/end provided. Gather the whole tree in the specified order.\n            if (iteratesForward) {\n                this.intervalTree.map((interval: TInterval) => {\n                    results.push(interval);\n                });\n            }\n            else {\n                this.intervalTree.mapBackward((interval: TInterval) => {\n                    results.push(interval);\n                });\n            }\n        }\n        else {\n            const transientInterval: TInterval = this.helpers.create(\n                \"transient\",\n                start,\n                end,\n                this.client,\n                MergeTree.IntervalType.Transient,\n            );\n\n            if (start === undefined) {\n                // Only end position provided. Since the tree is not sorted by end position,\n                // walk the whole tree in the specified order, gathering intervals that match the end.\n                if (iteratesForward) {\n                    this.intervalTree.map((interval: TInterval) => {\n                        if (transientInterval.compareEnd(interval) === 0) {\n                            results.push(interval);\n                        }\n                    });\n                }\n                else {\n                    this.intervalTree.mapBackward((interval: TInterval) => {\n                        if (transientInterval.compareEnd(interval) === 0) {\n                            results.push(interval);\n                        }\n                    });\n                }\n            }\n            else {\n                // Start and (possibly) end provided. Walk the subtrees that may contain\n                // this start position.\n                const compareFn =\n                    end === undefined ?\n                        (node: MergeTree.IntervalNode<TInterval>) => {\n                            return transientInterval.compareStart(node.key);\n                        } :\n                        (node: MergeTree.IntervalNode<TInterval>) => {\n                            return transientInterval.compare(node.key);\n                        };\n                const continueLeftFn = (cmpResult: number) => cmpResult <= 0;\n                const continueRightFn = (cmpResult: number) => cmpResult >= 0;\n                const actionFn = (node: MergeTree.IntervalNode<TInterval>) => {\n                    results.push(node.key);\n                };\n\n                if (iteratesForward) {\n                    this.intervalTree.intervals.walkExactMatchesForward(\n                        compareFn, actionFn, continueLeftFn, continueRightFn,\n                    );\n                }\n                else {\n                    this.intervalTree.intervals.walkExactMatchesBackward(\n                        compareFn, actionFn, continueLeftFn, continueRightFn,\n                    );\n                }\n            }\n        }\n    }\n\n    public findOverlappingIntervals(startPosition: number, endPosition: number) {\n        if (!this.intervalTree.intervals.isEmpty()) {\n            const transientInterval =\n                this.helpers.create(\n                    \"transient\",\n                    startPosition,\n                    endPosition,\n                    this.client,\n                    MergeTree.IntervalType.Transient);\n\n            const overlappingIntervalNodes = this.intervalTree.match(transientInterval);\n            return overlappingIntervalNodes.map((node) => node.key);\n        } else {\n            return [];\n        }\n    }\n\n    public previousInterval(pos: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", pos, pos, this.client, MergeTree.IntervalType.Transient);\n        const rbNode = this.endIntervalTree.floor(transientInterval);\n        if (rbNode) {\n            return rbNode.data;\n        }\n    }\n\n    public nextInterval(pos: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", pos, pos, this.client, MergeTree.IntervalType.Transient);\n        const rbNode = this.endIntervalTree.ceil(transientInterval);\n        if (rbNode) {\n            return rbNode.data;\n        }\n    }\n\n    public removeInterval(startPosition: number, endPosition: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", startPosition, endPosition, this.client, MergeTree.IntervalType.Transient);\n        this.intervalTree.remove(transientInterval);\n        this.endIntervalTree.remove(transientInterval);\n        return transientInterval;\n    }\n\n    public createInterval(start: number, end: number, intervalType: MergeTree.IntervalType) {\n        return this.helpers.create(this.label, start, end, this.client, intervalType);\n    }\n\n    // TODO: remove interval, handle duplicate intervals\n    public addInterval(\n        start: number,\n        end: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet) {\n        const interval = this.createInterval(start, end, intervalType);\n        if (interval) {\n            interval.addProperties(props);\n            if (this.label && (this.label.length > 0)) {\n                interval.properties[MergeTree.reservedRangeLabelsKey] = [this.label];\n            }\n            this.intervalTree.put(interval, this.conflictResolver);\n            this.endIntervalTree.put(interval, interval, this.endConflictResolver);\n        }\n        return interval;\n    }\n\n    public serialize() {\n        const client = this.client;\n        const intervals = this.intervalTree.intervals.keys();\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return intervals.map((interval) => interval.serialize(client));\n    }\n}\n\nconst compareSequenceIntervalEnds = (a: SequenceInterval, b: SequenceInterval): number => a.end.compare(b.end);\n\nclass SequenceIntervalCollectionFactory\n    implements IValueFactory<IntervalCollection<SequenceInterval>> {\n    public load(\n        emitter: IValueOpEmitter,\n        raw: ISerializedInterval[] = [],\n    ): IntervalCollection<SequenceInterval> {\n        const helpers: IIntervalHelpers<SequenceInterval> = {\n            compareEnds: compareSequenceIntervalEnds,\n            create: createSequenceInterval,\n        };\n        return new IntervalCollection<SequenceInterval>(helpers, true, emitter, raw);\n    }\n\n    public store(value: IntervalCollection<SequenceInterval>): ISerializedInterval[] {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return value.serializeInternal();\n    }\n}\n\nexport class SequenceIntervalCollectionValueType\n    implements IValueType<IntervalCollection<SequenceInterval>> {\n    public static Name = \"sharedStringIntervalCollection\";\n\n    public get name(): string {\n        return SequenceIntervalCollectionValueType.Name;\n    }\n\n    public get factory(): IValueFactory<IntervalCollection<SequenceInterval>> {\n        return SequenceIntervalCollectionValueType._factory;\n    }\n\n    public get ops(): Map<string, IValueOperation<IntervalCollection<SequenceInterval>>> {\n        return SequenceIntervalCollectionValueType._ops;\n    }\n\n    private static readonly _factory: IValueFactory<IntervalCollection<SequenceInterval>> =\n        new SequenceIntervalCollectionFactory();\n\n    private static readonly _ops: Map<string, IValueOperation<IntervalCollection<SequenceInterval>>> =\n        new Map<string, IValueOperation<IntervalCollection<SequenceInterval>>>(\n            [[\n                \"add\",\n                {\n                    process: (value, params, local, op) => {\n                        // Local ops were applied when the message was created\n                        if (local) {\n                            return;\n                        }\n\n                        value.addInternal(params, local, op);\n                    },\n                },\n            ],\n            [\n                \"delete\",\n                {\n                    process: (value, params, local, op) => {\n                        if (local) {\n                            return;\n                        }\n                        value.deleteInterval(params, local, op);\n                    },\n                },\n            ]]);\n}\n\nconst compareIntervalEnds = (a: Interval, b: Interval) => a.end - b.end;\n\nfunction createInterval(label: string, start: number, end: number, client: MergeTree.Client): Interval {\n    let rangeProp: MergeTree.PropertySet;\n    if (label && (label.length > 0)) {\n        rangeProp = {\n            [MergeTree.reservedRangeLabelsKey]: [label],\n        };\n    }\n    return new Interval(start, end, rangeProp);\n}\n\nclass IntervalCollectionFactory\n    implements IValueFactory<IntervalCollection<Interval>> {\n    public load(emitter: IValueOpEmitter, raw: ISerializedInterval[] = []): IntervalCollection<Interval> {\n        const helpers: IIntervalHelpers<Interval> = {\n            compareEnds: compareIntervalEnds,\n            create: createInterval,\n        };\n        const collection = new IntervalCollection<Interval>(helpers, false, emitter, raw);\n        collection.attachGraph(undefined, \"\");\n        return collection;\n    }\n\n    public store(value: IntervalCollection<Interval>): ISerializedInterval[] {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return value.serializeInternal();\n    }\n}\n\nexport class IntervalCollectionValueType\n    implements IValueType<IntervalCollection<Interval>> {\n    public static Name = \"sharedIntervalCollection\";\n\n    public get name(): string {\n        return IntervalCollectionValueType.Name;\n    }\n\n    public get factory(): IValueFactory<IntervalCollection<Interval>> {\n        return IntervalCollectionValueType._factory;\n    }\n\n    public get ops(): Map<string, IValueOperation<IntervalCollection<Interval>>> {\n        return IntervalCollectionValueType._ops;\n    }\n\n    private static readonly _factory: IValueFactory<IntervalCollection<Interval>> =\n        new IntervalCollectionFactory();\n    private static readonly _ops: Map<string, IValueOperation<IntervalCollection<Interval>>> =\n        new Map<string, IValueOperation<IntervalCollection<Interval>>>(\n            [[\n                \"add\",\n                {\n                    process: (value, params, local, op) => {\n                        // Local ops were applied when the message was created\n                        if (local) {\n                            return;\n                        }\n\n                        value.addInternal(params, local, op);\n                    },\n                },\n            ],\n            [\n                \"delete\",\n                {\n                    process: (value, params, local, op) => {\n                        if (local) {\n                            return;\n                        }\n                        value.deleteInterval(params, local, op);\n                    },\n                },\n            ]]);\n}\n\nexport type DeserializeCallback = (properties: MergeTree.PropertySet) => void;\n\nexport class IntervalCollectionView<TInterval extends ISerializableInterval> extends EventEmitter {\n    private readonly localCollection: LocalIntervalCollection<TInterval>;\n    private onDeserialize: DeserializeCallback;\n\n    constructor(\n        private readonly client: MergeTree.Client,\n        savedSerializedIntervals: ISerializedInterval[],\n        label: string,\n        helpers: IIntervalHelpers<TInterval>,\n        private readonly emitter: IValueOpEmitter) {\n        super();\n\n        // Instantiate the local interval collection based on the saved intervals\n        this.localCollection = new LocalIntervalCollection<TInterval>(client, label, helpers);\n        if (savedSerializedIntervals) {\n            for (const serializedInterval of savedSerializedIntervals) {\n                this.localCollection.addInterval(\n                    serializedInterval.start,\n                    serializedInterval.end,\n                    serializedInterval.intervalType,\n                    serializedInterval.properties);\n            }\n        }\n    }\n\n    public attachDeserializer(onDeserialize: DeserializeCallback): void {\n        this.attachDeserializerCore(onDeserialize);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void {\n        this.localCollection.addConflictResolver(conflictResolver);\n    }\n\n    public findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[] {\n        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);\n    }\n\n    public map(fn: (interval: TInterval) => void) {\n        this.localCollection.map(fn);\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);\n    }\n\n    public previousInterval(pos: number): TInterval {\n        return this.localCollection.previousInterval(pos);\n    }\n\n    public nextInterval(pos: number): TInterval {\n        return this.localCollection.nextInterval(pos);\n    }\n\n    public on(\n        event: \"addInterval\" | \"deleteInterval\",\n        listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this {\n        return super.on(event, listener);\n    }\n\n    public add(\n        start: number,\n        end: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet,\n    ) {\n        let seq = 0;\n        if (this.client) {\n            seq = this.client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            end,\n            intervalType,\n            properties: props,\n            sequenceNumber: seq,\n            start,\n        };\n\n        return this.addInternal(serializedInterval, true, undefined);\n    }\n\n    public delete(\n        start: number,\n        end: number) {\n        let sequenceNumber = 0;\n        if (this.client) {\n            sequenceNumber = this.client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            start,\n            end,\n            sequenceNumber,\n            intervalType: MergeTree.IntervalType.Transient,\n        };\n\n        this.deleteInterval(serializedInterval, true, undefined);\n    }\n\n    // TODO: error cases\n    public addInternal(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) {\n        const interval = this.localCollection.addInterval(\n            serializedInterval.start,\n            serializedInterval.end,\n            serializedInterval.intervalType,\n            serializedInterval.properties);\n\n        if (interval) {\n            // Local ops get submitted to the server. Remote ops have the deserializer run.\n            if (local) {\n                this.emitter.emit(\"add\", undefined, serializedInterval);\n            } else {\n                if (this.onDeserialize) {\n                    this.onDeserialize(interval);\n                }\n            }\n        }\n\n        this.emit(\"addInterval\", interval, local, op);\n\n        return interval;\n    }\n\n    public deleteInterval(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) {\n        const interval = this.localCollection.removeInterval(serializedInterval.start, serializedInterval.end);\n\n        if (interval) {\n            // Local ops get submitted to the server. Remote ops have the deserializer run.\n            if (local) {\n                this.emitter.emit(\"delete\", undefined, serializedInterval);\n            } else {\n                if (this.onDeserialize) {\n                    this.onDeserialize(interval);\n                }\n            }\n        }\n\n        this.emit(\"deleteInterval\", interval, local, op);\n\n        return this;\n    }\n\n    public serializeInternal() {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return this.localCollection.serialize();\n    }\n\n    private attachDeserializerCore(onDeserialize?: DeserializeCallback): void {\n        // If no deserializer is specified can skip all processing work\n        if (!onDeserialize) {\n            return;\n        }\n\n        // Start by storing the callbacks so that any subsequent modifications make use of them\n        this.onDeserialize = onDeserialize;\n\n        // Trigger the async prepare work across all values in the collection\n        this.localCollection.map((interval) => {\n            this.onDeserialize(interval);\n        });\n    }\n}\n\nexport class IntervalCollectionIterator<TInterval extends ISerializableInterval> {\n    private readonly results: TInterval[];\n    private index: number;\n\n    constructor(\n        collection: IntervalCollection<TInterval>,\n        iteratesForward: boolean = true,\n        start?: number,\n        end?: number) {\n        this.results = [];\n        this.index = 0;\n\n        collection.gatherIterationResults(this.results, iteratesForward, start, end);\n    }\n\n    public next() {\n        let _value: TInterval | undefined;\n        let _done: boolean = true;\n\n        if (this.index < this.results.length) {\n            _value = this.results[this.index++];\n            _done = false;\n        }\n\n        return {\n            value: _value,\n            done: _done,\n        };\n    }\n}\n\nexport class IntervalCollection<TInterval extends ISerializableInterval> {\n    private savedSerializedIntervals?: ISerializedInterval[];\n    private view: IntervalCollectionView<TInterval>;\n\n    public get attached(): boolean {\n        return !!this.view;\n    }\n\n    constructor(private readonly helpers: IIntervalHelpers<TInterval>, private readonly requiresClient: boolean,\n        private readonly emitter: IValueOpEmitter,\n        serializedIntervals: ISerializedInterval[]) {\n        this.savedSerializedIntervals = serializedIntervals;\n    }\n\n    public attachGraph(client: MergeTree.Client, label: string) {\n        if (this.view) {\n            throw new Error(\"Only supports one Sequence attach\");\n        }\n\n        if ((client === undefined) && (this.requiresClient)) {\n            throw new Error(\"Client required for this collection\");\n        }\n\n        this.view = new IntervalCollectionView<TInterval>(client,\n            this.savedSerializedIntervals, label, this.helpers, this.emitter);\n        this.savedSerializedIntervals = undefined;\n    }\n\n    public add(\n        startPosition: number,\n        endPosition: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet,\n    ) {\n        if (!this.view) {\n            throw new Error(\"attach must be called prior to adding intervals\");\n        }\n\n        return this.view.add(startPosition, endPosition, intervalType, props);\n    }\n\n    public delete(\n        startPosition: number,\n        endPosition: number,\n    ) {\n        if (!this.view) {\n            throw new Error(\"attach must be called prior to deleting intervals\");\n        }\n\n        this.view.delete(startPosition, endPosition);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void {\n        this.view.addConflictResolver(conflictResolver);\n    }\n\n    public async getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollectionView<TInterval>> {\n        if (!this.view) {\n            return Promise.reject(new Error(\"attachSequence must be called prior to retrieving the view\"));\n        }\n\n        // Attach custom deserializers if specified\n        if (onDeserialize) {\n            this.view.attachDeserializer(onDeserialize);\n        }\n\n        return this.view;\n    }\n\n    public addInternal(\n        serializedInterval: ISerializedInterval,\n        local: boolean,\n        op: ISequencedDocumentMessage) {\n        if (!this.view) {\n            throw new Error(\"attachSequence must be called\");\n        }\n\n        return this.view.addInternal(serializedInterval, local, op);\n    }\n\n    public deleteInterval(\n        serializedInterval: ISerializedInterval,\n        local: boolean,\n        op: ISequencedDocumentMessage): void {\n        if (!this.view) {\n            throw new Error(\"attach must be called prior to deleting intervals\");\n        }\n        this.view.deleteInterval(serializedInterval, local, op);\n    }\n\n    public serializeInternal() {\n        if (!this.view) {\n            throw new Error(\"attachSequence must be called\");\n        }\n\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return this.view.serializeInternal();\n    }\n\n    public [Symbol.iterator](): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this);\n        return iterator;\n    }\n\n    public CreateForwardIteratorWithStartPosition(startPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, true, startPosition);\n        return iterator;\n    }\n\n    public CreateBackwardIteratorWithStartPosition(startPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, false, startPosition);\n        return iterator;\n    }\n\n    public CreateForwardIteratorWithEndPosition(endPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, true, undefined, endPosition);\n        return iterator;\n    }\n\n    public CreateBackwardIteratorWithEndPosition(endPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, false, undefined, endPosition);\n        return iterator;\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        if (!this.view) {\n            return;\n        }\n\n        this.view.gatherIterationResults(results, iteratesForward, start, end);\n    }\n}\n"]}
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* Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\n/* eslint-disable no-bitwise */\n\nimport { EventEmitter } from \"events\";\nimport * as MergeTree from \"@fluidframework/merge-tree\";\nimport { ISequencedDocumentMessage } from \"@fluidframework/protocol-definitions\";\nimport { v4 as uuid } from \"uuid\";\nimport { IValueFactory, IValueOpEmitter, IValueOperation, IValueType } from \"./mapKernelInterfaces\";\n\nexport const reservedIntervalIdKey = \"intervalId\";\n\nexport interface ISerializedInterval {\n    sequenceNumber: number;\n    start: number;\n    end: number;\n    intervalType: MergeTree.IntervalType;\n    properties?: MergeTree.PropertySet;\n}\n\nexport interface ISerializableInterval extends MergeTree.IInterval {\n    properties: MergeTree.PropertySet;\n    serialize(client: MergeTree.Client);\n    addProperties(props: MergeTree.PropertySet);\n}\n\nexport interface IIntervalHelpers<TInterval extends ISerializableInterval> {\n    compareEnds(a: TInterval, b: TInterval): number;\n    create(label: string, start: number, end: number,\n        client: MergeTree.Client, intervalType?: MergeTree.IntervalType): TInterval;\n}\n\nexport class Interval implements ISerializableInterval {\n    public properties: MergeTree.PropertySet;\n    public auxProps: MergeTree.PropertySet[];\n    constructor(\n        public start: number,\n        public end: number,\n        props?: MergeTree.PropertySet) {\n        if (props) {\n            this.addProperties(props);\n        }\n    }\n\n    public getIntervalId(): string | undefined {\n        return this.properties?.[reservedIntervalIdKey]?.toString() as string | undefined;\n    }\n\n    public getAdditionalPropertySets() {\n        return this.auxProps;\n    }\n\n    public addPropertySet(props: MergeTree.PropertySet) {\n        if (this.auxProps === undefined) {\n            this.auxProps = [];\n        }\n        this.auxProps.push(props);\n    }\n\n    public serialize(client: MergeTree.Client) {\n        let seq = 0;\n        if (client) {\n            seq = client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            end: this.end,\n            intervalType: 0,\n            sequenceNumber: seq,\n            start: this.start,\n        };\n        if (this.properties) {\n            serializedInterval.properties = this.properties;\n        }\n        return serializedInterval;\n    }\n\n    public clone() {\n        return new Interval(this.start, this.end, this.properties);\n    }\n\n    public compare(b: Interval) {\n        const startResult = this.compareStart(b);\n        if (startResult === 0) {\n            return this.compareEnd(b);\n        } else {\n            return startResult;\n        }\n    }\n\n    public compareStart(b: Interval) {\n        return this.start - b.start;\n    }\n\n    public compareEnd(b: Interval) {\n        return this.end - b.end;\n    }\n\n    public overlaps(b: Interval) {\n        const result = (this.start < b.end) &&\n            (this.end >= b.start);\n        return result;\n    }\n\n    public union(b: Interval) {\n        return new Interval(Math.min(this.start, b.start),\n            Math.max(this.end, b.end), this.properties);\n    }\n\n    public getProperties() {\n        return this.properties;\n    }\n\n    public addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp) {\n        this.properties = MergeTree.addProperties(this.properties, newProps, op);\n    }\n}\n\nexport class SequenceInterval implements ISerializableInterval {\n    public properties: MergeTree.PropertySet;\n    private readonly checkMergeTree: MergeTree.MergeTree;\n\n    constructor(\n        public start: MergeTree.LocalReference,\n        public end: MergeTree.LocalReference,\n        public intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet) {\n        if (props) {\n            this.addProperties(props);\n        }\n    }\n\n    public serialize(client: MergeTree.Client) {\n        const startPosition = this.start.toPosition();\n        const endPosition = this.end.toPosition();\n        const serializedInterval: ISerializedInterval = {\n            end: endPosition,\n            intervalType: this.intervalType,\n            sequenceNumber: client.getCurrentSeq(),\n            start: startPosition,\n        };\n        if (this.properties) {\n            serializedInterval.properties = this.properties;\n        }\n        return serializedInterval;\n    }\n\n    public clone() {\n        return new SequenceInterval(this.start, this.end, this.intervalType);\n    }\n\n    public compare(b: SequenceInterval) {\n        const startResult = this.compareStart(b);\n        if (startResult === 0) {\n            return this.compareEnd(b);\n        } else {\n            return startResult;\n        }\n    }\n\n    public compareStart(b: SequenceInterval) {\n        return this.start.compare(b.start);\n    }\n\n    public compareEnd(b: SequenceInterval) {\n        return this.end.compare(b.end);\n    }\n\n    public overlaps(b: SequenceInterval) {\n        const result = (this.start.compare(b.end) < 0) &&\n            (this.end.compare(b.start) >= 0);\n        if (this.checkMergeTree) {\n            this.checkOverlaps(b, result);\n        }\n        return result;\n    }\n\n    public getIntervalId(): string | undefined {\n        return this.properties?.[reservedIntervalIdKey]?.toString() as string | undefined;\n    }\n\n    public union(b: SequenceInterval) {\n        return new SequenceInterval(this.start.min(b.start),\n            this.end.max(b.end), this.intervalType);\n    }\n\n    public addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp) {\n        this.properties = MergeTree.addProperties(this.properties, newProps, op);\n    }\n\n    public overlapsPos(bstart: number, bend: number) {\n        const startPos = this.start.toPosition();\n        const endPos = this.start.toPosition();\n        return (endPos > bstart) && (startPos < bend);\n    }\n\n    private checkOverlaps(b: SequenceInterval, result: boolean) {\n        const astart = this.start.toPosition();\n        const bstart = b.start.toPosition();\n        const aend = this.end.toPosition();\n        const bend = b.end.toPosition();\n        const checkResult = ((astart < bend) && (bstart < aend));\n        if (checkResult !== result) {\n            // eslint-disable-next-line max-len\n            console.log(`check mismatch: res ${result} ${this.start.segment === b.end.segment} ${b.start.segment === this.end.segment}`);\n            console.log(`as ${astart} ae ${aend} bs ${bstart} be ${bend}`);\n            console.log(`as ${MergeTree.ordinalToArray(this.start.segment.ordinal)}@${this.start.offset}`);\n            console.log(`ae ${MergeTree.ordinalToArray(this.end.segment.ordinal)}@${this.end.offset}`);\n            console.log(`bs ${MergeTree.ordinalToArray(b.start.segment.ordinal)}@${b.start.offset}`);\n            console.log(`be ${MergeTree.ordinalToArray(b.end.segment.ordinal)}@${b.end.offset}`);\n            console.log(this.checkMergeTree.nodeToString(b.start.segment.parent, \"\"));\n        }\n    }\n}\n\nfunction createPositionReference(\n    client: MergeTree.Client,\n    pos: number,\n    refType: MergeTree.ReferenceType): MergeTree.LocalReference {\n    const segoff = client.getContainingSegment(pos);\n    if (segoff && segoff.segment) {\n        const lref = new MergeTree.LocalReference(client, segoff.segment, segoff.offset, refType);\n        if (refType !== MergeTree.ReferenceType.Transient) {\n            client.addLocalReference(lref);\n        }\n        return lref;\n    }\n    return new MergeTree.LocalReference(client, undefined);\n}\n\nfunction createSequenceInterval(\n    label: string,\n    start: number,\n    end: number,\n    client: MergeTree.Client,\n    intervalType: MergeTree.IntervalType): SequenceInterval {\n    let beginRefType = MergeTree.ReferenceType.RangeBegin;\n    let endRefType = MergeTree.ReferenceType.RangeEnd;\n    if (intervalType === MergeTree.IntervalType.Nest) {\n        beginRefType = MergeTree.ReferenceType.NestBegin;\n        endRefType = MergeTree.ReferenceType.NestEnd;\n    } else if (intervalType === MergeTree.IntervalType.Transient) {\n        beginRefType = MergeTree.ReferenceType.Transient;\n        endRefType = MergeTree.ReferenceType.Transient;\n    }\n\n    // TODO: Should SlideOnRemove be the default behavior?\n    if (intervalType & MergeTree.IntervalType.SlideOnRemove) {\n        beginRefType |= MergeTree.ReferenceType.SlideOnRemove;\n        endRefType |= MergeTree.ReferenceType.SlideOnRemove;\n    }\n\n    const startLref = createPositionReference(client, start, beginRefType);\n    const endLref = createPositionReference(client, end, endRefType);\n    if (startLref && endLref) {\n        startLref.pairedRef = endLref;\n        endLref.pairedRef = startLref;\n        const rangeProp = {\n            [MergeTree.reservedRangeLabelsKey]: [label],\n        };\n        startLref.addProperties(rangeProp);\n        endLref.addProperties(rangeProp);\n\n        const ival = new SequenceInterval(startLref, endLref, intervalType, rangeProp);\n        return ival;\n    }\n}\n\nexport function defaultIntervalConflictResolver(a: Interval, b: Interval) {\n    a.addPropertySet(b.properties);\n    return a;\n}\n\nexport function createIntervalIndex(conflict?: MergeTree.IntervalConflictResolver<Interval>) {\n    const helpers: IIntervalHelpers<Interval> = {\n        compareEnds: compareIntervalEnds,\n        create: createInterval,\n    };\n    const lc = new LocalIntervalCollection<Interval>(undefined, \"\", helpers);\n    if (conflict) {\n        lc.addConflictResolver(conflict);\n    } else {\n        lc.addConflictResolver(defaultIntervalConflictResolver);\n    }\n    return lc;\n}\n\nexport class LocalIntervalCollection<TInterval extends ISerializableInterval> {\n    private readonly intervalTree = new MergeTree.IntervalTree<TInterval>();\n    private readonly endIntervalTree: MergeTree.RedBlackTree<TInterval, TInterval>;\n    private conflictResolver: MergeTree.IntervalConflictResolver<TInterval>;\n    private endConflictResolver: MergeTree.ConflictAction<TInterval, TInterval>;\n\n    constructor(\n        private readonly client: MergeTree.Client,\n        private readonly label: string,\n        private readonly helpers: IIntervalHelpers<TInterval>) {\n        this.endIntervalTree =\n            // eslint-disable-next-line @typescript-eslint/unbound-method\n            new MergeTree.RedBlackTree<TInterval, TInterval>(helpers.compareEnds);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>) {\n        this.conflictResolver = conflictResolver;\n        this.endConflictResolver =\n            (key: TInterval, currentKey: TInterval) => {\n                const ival = this.conflictResolver(key, currentKey);\n                return {\n                    data: ival,\n                    key: ival,\n                };\n            };\n    }\n\n    public map(fn: (interval: TInterval) => void) {\n        this.intervalTree.map(fn);\n    }\n\n    public createLegacyId(start: number, end: number): string {\n        // Create a non-unique ID based on start and end to be used on intervals that come from legacy clients\n        // without ID's.\n        return `${start}-${end}`;\n    }\n\n    public ensureSerializedId(serializedInterval: ISerializedInterval) {\n        if (serializedInterval.properties?.[reservedIntervalIdKey] === undefined) {\n            // An interval came over the wire without an ID, so create a non-unique one based on start/end.\n            // This will allow all clients to refer to this interval consistently.\n            serializedInterval.properties = MergeTree.addProperties(\n                serializedInterval.properties,\n                {\n                    [reservedIntervalIdKey]: this.createLegacyId(serializedInterval.start, serializedInterval.end),\n                },\n            );\n        }\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        if (this.intervalTree.intervals.isEmpty()) {\n            return;\n        }\n\n        if (start === undefined && end === undefined) {\n            // No start/end provided. Gather the whole tree in the specified order.\n            if (iteratesForward) {\n                this.intervalTree.map((interval: TInterval) => {\n                    results.push(interval);\n                });\n            }\n            else {\n                this.intervalTree.mapBackward((interval: TInterval) => {\n                    results.push(interval);\n                });\n            }\n        }\n        else {\n            const transientInterval: TInterval = this.helpers.create(\n                \"transient\",\n                start,\n                end,\n                this.client,\n                MergeTree.IntervalType.Transient,\n            );\n\n            if (start === undefined) {\n                // Only end position provided. Since the tree is not sorted by end position,\n                // walk the whole tree in the specified order, gathering intervals that match the end.\n                if (iteratesForward) {\n                    this.intervalTree.map((interval: TInterval) => {\n                        if (transientInterval.compareEnd(interval) === 0) {\n                            results.push(interval);\n                        }\n                    });\n                }\n                else {\n                    this.intervalTree.mapBackward((interval: TInterval) => {\n                        if (transientInterval.compareEnd(interval) === 0) {\n                            results.push(interval);\n                        }\n                    });\n                }\n            }\n            else {\n                // Start and (possibly) end provided. Walk the subtrees that may contain\n                // this start position.\n                const compareFn =\n                    end === undefined ?\n                        (node: MergeTree.IntervalNode<TInterval>) => {\n                            return transientInterval.compareStart(node.key);\n                        } :\n                        (node: MergeTree.IntervalNode<TInterval>) => {\n                            return transientInterval.compare(node.key);\n                        };\n                const continueLeftFn = (cmpResult: number) => cmpResult <= 0;\n                const continueRightFn = (cmpResult: number) => cmpResult >= 0;\n                const actionFn = (node: MergeTree.IntervalNode<TInterval>) => {\n                    results.push(node.key);\n                };\n\n                if (iteratesForward) {\n                    this.intervalTree.intervals.walkExactMatchesForward(\n                        compareFn, actionFn, continueLeftFn, continueRightFn,\n                    );\n                }\n                else {\n                    this.intervalTree.intervals.walkExactMatchesBackward(\n                        compareFn, actionFn, continueLeftFn, continueRightFn,\n                    );\n                }\n            }\n        }\n    }\n\n    public findOverlappingIntervals(startPosition: number, endPosition: number) {\n        if (!this.intervalTree.intervals.isEmpty()) {\n            const transientInterval =\n                this.helpers.create(\n                    \"transient\",\n                    startPosition,\n                    endPosition,\n                    this.client,\n                    MergeTree.IntervalType.Transient);\n\n            const overlappingIntervalNodes = this.intervalTree.match(transientInterval);\n            return overlappingIntervalNodes.map((node) => node.key);\n        } else {\n            return [];\n        }\n    }\n\n    public previousInterval(pos: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", pos, pos, this.client, MergeTree.IntervalType.Transient);\n        const rbNode = this.endIntervalTree.floor(transientInterval);\n        if (rbNode) {\n            return rbNode.data;\n        }\n    }\n\n    public nextInterval(pos: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", pos, pos, this.client, MergeTree.IntervalType.Transient);\n        const rbNode = this.endIntervalTree.ceil(transientInterval);\n        if (rbNode) {\n            return rbNode.data;\n        }\n    }\n\n    public removeInterval(startPosition: number, endPosition: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", startPosition, endPosition, this.client, MergeTree.IntervalType.Transient);\n        this.intervalTree.remove(transientInterval);\n        this.endIntervalTree.remove(transientInterval);\n        return transientInterval;\n    }\n\n    public createInterval(start: number, end: number, intervalType: MergeTree.IntervalType) {\n        return this.helpers.create(this.label, start, end, this.client, intervalType);\n    }\n\n    // TODO: remove interval, handle duplicate intervals\n    public addInterval(\n        start: number,\n        end: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet) {\n        const interval: TInterval = this.createInterval(start, end, intervalType);\n        if (interval) {\n            interval.addProperties(props);\n            if (this.label && (this.label.length > 0)) {\n                interval.properties[MergeTree.reservedRangeLabelsKey] = [this.label];\n            }\n            if (interval.properties[reservedIntervalIdKey] === undefined) {\n                interval.properties[reservedIntervalIdKey] = uuid();\n            }\n            this.intervalTree.put(interval, this.conflictResolver);\n            this.endIntervalTree.put(interval, interval, this.endConflictResolver);\n        }\n        return interval;\n    }\n\n    public serialize() {\n        const client = this.client;\n        const intervals = this.intervalTree.intervals.keys();\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return intervals.map((interval) => interval.serialize(client));\n    }\n}\n\nconst compareSequenceIntervalEnds = (a: SequenceInterval, b: SequenceInterval): number => a.end.compare(b.end);\n\nclass SequenceIntervalCollectionFactory\n    implements IValueFactory<IntervalCollection<SequenceInterval>> {\n    public load(\n        emitter: IValueOpEmitter,\n        raw: ISerializedInterval[] = [],\n    ): IntervalCollection<SequenceInterval> {\n        const helpers: IIntervalHelpers<SequenceInterval> = {\n            compareEnds: compareSequenceIntervalEnds,\n            create: createSequenceInterval,\n        };\n        return new IntervalCollection<SequenceInterval>(helpers, true, emitter, raw);\n    }\n\n    public store(value: IntervalCollection<SequenceInterval>): ISerializedInterval[] {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return value.serializeInternal();\n    }\n}\n\nexport class SequenceIntervalCollectionValueType\n    implements IValueType<IntervalCollection<SequenceInterval>> {\n    public static Name = \"sharedStringIntervalCollection\";\n\n    public get name(): string {\n        return SequenceIntervalCollectionValueType.Name;\n    }\n\n    public get factory(): IValueFactory<IntervalCollection<SequenceInterval>> {\n        return SequenceIntervalCollectionValueType._factory;\n    }\n\n    public get ops(): Map<string, IValueOperation<IntervalCollection<SequenceInterval>>> {\n        return SequenceIntervalCollectionValueType._ops;\n    }\n\n    private static readonly _factory: IValueFactory<IntervalCollection<SequenceInterval>> =\n        new SequenceIntervalCollectionFactory();\n\n    private static readonly _ops: Map<string, IValueOperation<IntervalCollection<SequenceInterval>>> =\n        new Map<string, IValueOperation<IntervalCollection<SequenceInterval>>>(\n            [[\n                \"add\",\n                {\n                    process: (value, params, local, op) => {\n                        // Local ops were applied when the message was created\n                        if (local) {\n                            return;\n                        }\n\n                        value.addInternal(params, local, op);\n                    },\n                },\n            ],\n            [\n                \"delete\",\n                {\n                    process: (value, params, local, op) => {\n                        if (local) {\n                            return;\n                        }\n                        value.deleteInterval(params, local, op);\n                    },\n                },\n            ]]);\n}\n\nconst compareIntervalEnds = (a: Interval, b: Interval) => a.end - b.end;\n\nfunction createInterval(label: string, start: number, end: number, client: MergeTree.Client): Interval {\n    let rangeProp: MergeTree.PropertySet;\n    if (label && (label.length > 0)) {\n        rangeProp = {\n            [MergeTree.reservedRangeLabelsKey]: [label],\n        };\n    }\n    return new Interval(start, end, rangeProp);\n}\n\nclass IntervalCollectionFactory\n    implements IValueFactory<IntervalCollection<Interval>> {\n    public load(emitter: IValueOpEmitter, raw: ISerializedInterval[] = []): IntervalCollection<Interval> {\n        const helpers: IIntervalHelpers<Interval> = {\n            compareEnds: compareIntervalEnds,\n            create: createInterval,\n        };\n        const collection = new IntervalCollection<Interval>(helpers, false, emitter, raw);\n        collection.attachGraph(undefined, \"\");\n        return collection;\n    }\n\n    public store(value: IntervalCollection<Interval>): ISerializedInterval[] {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return value.serializeInternal();\n    }\n}\n\nexport class IntervalCollectionValueType\n    implements IValueType<IntervalCollection<Interval>> {\n    public static Name = \"sharedIntervalCollection\";\n\n    public get name(): string {\n        return IntervalCollectionValueType.Name;\n    }\n\n    public get factory(): IValueFactory<IntervalCollection<Interval>> {\n        return IntervalCollectionValueType._factory;\n    }\n\n    public get ops(): Map<string, IValueOperation<IntervalCollection<Interval>>> {\n        return IntervalCollectionValueType._ops;\n    }\n\n    private static readonly _factory: IValueFactory<IntervalCollection<Interval>> =\n        new IntervalCollectionFactory();\n    private static readonly _ops: Map<string, IValueOperation<IntervalCollection<Interval>>> =\n        new Map<string, IValueOperation<IntervalCollection<Interval>>>(\n            [[\n                \"add\",\n                {\n                    process: (value, params, local, op) => {\n                        // Local ops were applied when the message was created\n                        if (local) {\n                            return;\n                        }\n\n                        value.addInternal(params, local, op);\n                    },\n                },\n            ],\n            [\n                \"delete\",\n                {\n                    process: (value, params, local, op) => {\n                        if (local) {\n                            return;\n                        }\n                        value.deleteInterval(params, local, op);\n                    },\n                },\n            ]]);\n}\n\nexport type DeserializeCallback = (properties: MergeTree.PropertySet) => void;\n\nexport class IntervalCollectionIterator<TInterval extends ISerializableInterval> {\n    private readonly results: TInterval[];\n    private index: number;\n\n    constructor(\n        collection: IntervalCollection<TInterval>,\n        iteratesForward: boolean = true,\n        start?: number,\n        end?: number) {\n        this.results = [];\n        this.index = 0;\n\n        collection.gatherIterationResults(this.results, iteratesForward, start, end);\n    }\n\n    public next() {\n        let _value: TInterval | undefined;\n        let _done: boolean = true;\n\n        if (this.index < this.results.length) {\n            _value = this.results[this.index++];\n            _done = false;\n        }\n\n        return {\n            value: _value,\n            done: _done,\n        };\n    }\n}\n\nexport class IntervalCollection<TInterval extends ISerializableInterval> extends EventEmitter {\n    private savedSerializedIntervals?: ISerializedInterval[];\n    private localCollection: LocalIntervalCollection<TInterval>;\n    private onDeserialize: DeserializeCallback;\n    private client: MergeTree.Client;\n\n    public get attached(): boolean {\n        // return !!this.view;\n        return !!this.localCollection;\n    }\n\n    constructor(private readonly helpers: IIntervalHelpers<TInterval>, private readonly requiresClient: boolean,\n        private readonly emitter: IValueOpEmitter,\n        serializedIntervals: ISerializedInterval[]) {\n        super();\n        this.savedSerializedIntervals = serializedIntervals;\n    }\n\n    public attachGraph(client: MergeTree.Client, label: string) {\n        if (this.attached) {\n            throw new Error(\"Only supports one Sequence attach\");\n        }\n\n        if ((client === undefined) && (this.requiresClient)) {\n            throw new Error(\"Client required for this collection\");\n        }\n\n        // Instantiate the local interval collection based on the saved intervals\n        this.client = client;\n        this.localCollection = new LocalIntervalCollection<TInterval>(client, label, this.helpers);\n        if (this.savedSerializedIntervals) {\n            for (const serializedInterval of this.savedSerializedIntervals) {\n                this.localCollection.ensureSerializedId(serializedInterval);\n                this.localCollection.addInterval(\n                    serializedInterval.start,\n                    serializedInterval.end,\n                    serializedInterval.intervalType,\n                    serializedInterval.properties);\n            }\n        }\n        this.savedSerializedIntervals = undefined;\n    }\n\n    public add(\n        start: number,\n        end: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet,\n    ) {\n        if (!this.attached) {\n            throw new Error(\"attach must be called prior to adding intervals\");\n        }\n\n        let seq = 0;\n        if (this.client) {\n            seq = this.client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            end,\n            intervalType,\n            properties: props,\n            sequenceNumber: seq,\n            start,\n        };\n\n        return this.addInternal(serializedInterval, true, undefined);\n    }\n\n    public delete(\n        start: number,\n        end: number,\n    ) {\n        let sequenceNumber = 0;\n        if (!this.attached) {\n            throw new Error(\"attach must be called prior to deleting intervals\");\n        }\n\n        if (this.client) {\n            sequenceNumber = this.client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            start,\n            end,\n            sequenceNumber,\n            intervalType: MergeTree.IntervalType.Transient,\n        };\n\n        this.deleteInterval(serializedInterval, true, undefined);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void {\n        if (!this.attached) {\n            throw new Error(\"attachSequence must be called\");\n        }\n        this.localCollection.addConflictResolver(conflictResolver);\n    }\n\n    public attachDeserializer(onDeserialize: DeserializeCallback): void {\n        this.attachDeserializerCore(onDeserialize);\n    }\n\n    private attachDeserializerCore(onDeserialize?: DeserializeCallback): void {\n        // If no deserializer is specified can skip all processing work\n        if (!onDeserialize) {\n            return;\n        }\n\n        // Start by storing the callbacks so that any subsequent modifications make use of them\n        this.onDeserialize = onDeserialize;\n\n        // Trigger the async prepare work across all values in the collection\n        this.localCollection.map((interval) => {\n            this.onDeserialize(interval);\n        });\n    }\n\n    /**\n     * @deprecated - IntervalCollectionView has been removed. Please refer to IntervalCollection directly.\n     */\n    public async getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollection<TInterval>> {\n        if (!this.attached) {\n            return Promise.reject(new Error(\"attachSequence must be called prior to retrieving the view\"));\n        }\n\n        // Attach custom deserializers if specified\n        if (onDeserialize) {\n            this.attachDeserializer(onDeserialize);\n        }\n\n        return this;\n    }\n\n    public addInternal(\n        serializedInterval: ISerializedInterval,\n        local: boolean,\n        op: ISequencedDocumentMessage) {\n        if (!this.attached) {\n            throw new Error(\"attachSequence must be called\");\n        }\n\n        if (!local) {\n            this.localCollection.ensureSerializedId(serializedInterval);\n        }\n\n        const interval = this.localCollection.addInterval(\n            serializedInterval.start,\n            serializedInterval.end,\n            serializedInterval.intervalType,\n            serializedInterval.properties);\n\n        if (interval) {\n            // Local ops get submitted to the server. Remote ops have the deserializer run.\n            if (local) {\n                this.emitter.emit(\"add\", undefined, serializedInterval);\n            } else {\n                if (this.onDeserialize) {\n                    this.onDeserialize(interval);\n                }\n            }\n        }\n\n        this.emit(\"addInterval\", interval, local, op);\n\n        return interval;\n    }\n\n    public deleteInterval(\n        serializedInterval: ISerializedInterval,\n        local: boolean,\n        op: ISequencedDocumentMessage): void {\n        if (!this.attached) {\n            throw new Error(\"attach must be called prior to deleting intervals\");\n        }\n\n        const interval = this.localCollection.removeInterval(serializedInterval.start, serializedInterval.end);\n\n        if (interval) {\n            // Local ops get submitted to the server. Remote ops have the deserializer run.\n            if (local) {\n                this.emitter.emit(\"delete\", undefined, serializedInterval);\n            } else {\n                if (this.onDeserialize) {\n                    this.onDeserialize(interval);\n                }\n            }\n        }\n\n        this.emit(\"deleteInterval\", interval, local, op);\n    }\n\n    public serializeInternal() {\n        if (!this.attached) {\n            throw new Error(\"attachSequence must be called\");\n        }\n\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return this.localCollection.serialize();\n    }\n\n    public [Symbol.iterator](): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this);\n        return iterator;\n    }\n\n    public CreateForwardIteratorWithStartPosition(startPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, true, startPosition);\n        return iterator;\n    }\n\n    public CreateBackwardIteratorWithStartPosition(startPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, false, startPosition);\n        return iterator;\n    }\n\n    public CreateForwardIteratorWithEndPosition(endPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, true, undefined, endPosition);\n        return iterator;\n    }\n\n    public CreateBackwardIteratorWithEndPosition(endPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, false, undefined, endPosition);\n        return iterator;\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        if (!this.attached) {\n            return;\n        }\n\n        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);\n    }\n\n    public findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[] {\n        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);\n    }\n\n    public map(fn: (interval: TInterval) => void) {\n        this.localCollection.map(fn);\n    }\n\n    public previousInterval(pos: number): TInterval {\n        return this.localCollection.previousInterval(pos);\n    }\n\n    public nextInterval(pos: number): TInterval {\n        return this.localCollection.nextInterval(pos);\n    }\n\n    public on(\n        event: \"addInterval\" | \"deleteInterval\",\n        listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this {\n        return super.on(event, listener);\n    }\n}\n"]}

dist/packageVersion.d.ts

@@ -8,3 +8,3 @@ /*!
 export declare const pkgName = "@fluidframework/sequence";
-export declare const pkgVersion = "0.42.2";
+export declare const pkgVersion = "0.43.0";
 //# sourceMappingURL=packageVersion.d.ts.map

dist/packageVersion.js

@@ -11,3 +11,3 @@ "use strict";
 exports.pkgName = "@fluidframework/sequence";
-exports.pkgVersion = "0.42.2";
+exports.pkgVersion = "0.43.0";
 //# sourceMappingURL=packageVersion.js.map

dist/packageVersion.js.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"packageVersion.js","sourceRoot":"","sources":["../src/packageVersion.ts"],"names":[],"mappings":";AAAA;;;;;GAKG;;;AAEU,QAAA,OAAO,GAAG,0BAA0B,CAAC;AACrC,QAAA,UAAU,GAAG,QAAQ,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n *\n * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY\n */\n\nexport const pkgName = \"@fluidframework/sequence\";\nexport const pkgVersion = \"0.42.2\";\n"]}
+{"version":3,"file":"packageVersion.js","sourceRoot":"","sources":["../src/packageVersion.ts"],"names":[],"mappings":";AAAA;;;;;GAKG;;;AAEU,QAAA,OAAO,GAAG,0BAA0B,CAAC;AACrC,QAAA,UAAU,GAAG,QAAQ,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n *\n * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY\n */\n\nexport const pkgName = \"@fluidframework/sequence\";\nexport const pkgVersion = \"0.43.0\";\n"]}

lib/index.d.ts

@@ -5,3 +5,3 @@ /*!
  */
-export { DeserializeCallback, IIntervalHelpers, Interval, ISerializableInterval, ISerializedInterval, IntervalCollection, IntervalCollectionIterator, IntervalCollectionView, SequenceInterval, } from "./intervalCollection";
+export { DeserializeCallback, IIntervalHelpers, Interval, ISerializableInterval, ISerializedInterval, IntervalCollection, IntervalCollectionIterator, SequenceInterval, } from "./intervalCollection";
 export { IValueOpEmitter, } from "./mapKernelInterfaces";
@@ -8,0 +8,0 @@ export * from "./sharedString";

lib/index.d.ts.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA;;;GAGG;AAEH,OAAO,EACH,mBAAmB,EACnB,gBAAgB,EAChB,QAAQ,EACR,qBAAqB,EACrB,mBAAmB,EACnB,kBAAkB,EAClB,0BAA0B,EAC1B,sBAAsB,EACtB,gBAAgB,GACnB,MAAM,sBAAsB,CAAC;AAC9B,OAAO,EACH,eAAe,GAClB,MAAM,uBAAuB,CAAC;AAC/B,cAAc,gBAAgB,CAAC;AAC/B,cAAc,YAAY,CAAC;AAC3B,cAAc,mBAAmB,CAAC;AAClC,cAAc,sBAAsB,CAAC;AACrC,cAAc,kBAAkB,CAAC;AACjC,cAAc,wBAAwB,CAAC;AACvC,cAAc,wBAAwB,CAAC;AACvC,cAAc,gBAAgB,CAAC;AAC/B,cAAc,4BAA4B,CAAC"}
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA;;;GAGG;AAEH,OAAO,EACH,mBAAmB,EACnB,gBAAgB,EAChB,QAAQ,EACR,qBAAqB,EACrB,mBAAmB,EACnB,kBAAkB,EAClB,0BAA0B,EAC1B,gBAAgB,GACnB,MAAM,sBAAsB,CAAC;AAC9B,OAAO,EACH,eAAe,GAClB,MAAM,uBAAuB,CAAC;AAC/B,cAAc,gBAAgB,CAAC;AAC/B,cAAc,YAAY,CAAC;AAC3B,cAAc,mBAAmB,CAAC;AAClC,cAAc,sBAAsB,CAAC;AACrC,cAAc,kBAAkB,CAAC;AACjC,cAAc,wBAAwB,CAAC;AACvC,cAAc,wBAAwB,CAAC;AACvC,cAAc,gBAAgB,CAAC;AAC/B,cAAc,4BAA4B,CAAC"}

lib/index.js

@@ -5,3 +5,3 @@ /*!
  */
-export { Interval, IntervalCollection, IntervalCollectionIterator, IntervalCollectionView, SequenceInterval, } from "./intervalCollection";
+export { Interval, IntervalCollection, IntervalCollectionIterator, SequenceInterval, } from "./intervalCollection";
 export * from "./sharedString";
@@ -8,0 +8,0 @@ export * from "./sequence";

lib/index.js.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.js","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA;;;GAGG;AAEH,OAAO,EAGH,QAAQ,EAGR,kBAAkB,EAClB,0BAA0B,EAC1B,sBAAsB,EACtB,gBAAgB,GACnB,MAAM,sBAAsB,CAAC;AAI9B,cAAc,gBAAgB,CAAC;AAC/B,cAAc,YAAY,CAAC;AAC3B,cAAc,mBAAmB,CAAC;AAClC,cAAc,sBAAsB,CAAC;AACrC,cAAc,kBAAkB,CAAC;AACjC,cAAc,wBAAwB,CAAC;AACvC,cAAc,wBAAwB,CAAC;AACvC,cAAc,gBAAgB,CAAC;AAC/B,cAAc,4BAA4B,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\nexport {\n    DeserializeCallback,\n    IIntervalHelpers,\n    Interval,\n    ISerializableInterval,\n    ISerializedInterval,\n    IntervalCollection,\n    IntervalCollectionIterator,\n    IntervalCollectionView,\n    SequenceInterval,\n} from \"./intervalCollection\";\nexport {\n    IValueOpEmitter,\n} from \"./mapKernelInterfaces\";\nexport * from \"./sharedString\";\nexport * from \"./sequence\";\nexport * from \"./sequenceFactory\";\nexport * from \"./sequenceDeltaEvent\";\nexport * from \"./sharedSequence\";\nexport * from \"./sharedObjectSequence\";\nexport * from \"./sharedNumberSequence\";\nexport * from \"./sparsematrix\";\nexport * from \"./sharedIntervalCollection\";\n"]}
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA;;;GAGG;AAEH,OAAO,EAGH,QAAQ,EAGR,kBAAkB,EAClB,0BAA0B,EAC1B,gBAAgB,GACnB,MAAM,sBAAsB,CAAC;AAI9B,cAAc,gBAAgB,CAAC;AAC/B,cAAc,YAAY,CAAC;AAC3B,cAAc,mBAAmB,CAAC;AAClC,cAAc,sBAAsB,CAAC;AACrC,cAAc,kBAAkB,CAAC;AACjC,cAAc,wBAAwB,CAAC;AACvC,cAAc,wBAAwB,CAAC;AACvC,cAAc,gBAAgB,CAAC;AAC/B,cAAc,4BAA4B,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\nexport {\n    DeserializeCallback,\n    IIntervalHelpers,\n    Interval,\n    ISerializableInterval,\n    ISerializedInterval,\n    IntervalCollection,\n    IntervalCollectionIterator,\n    SequenceInterval,\n} from \"./intervalCollection\";\nexport {\n    IValueOpEmitter,\n} from \"./mapKernelInterfaces\";\nexport * from \"./sharedString\";\nexport * from \"./sequence\";\nexport * from \"./sequenceFactory\";\nexport * from \"./sequenceDeltaEvent\";\nexport * from \"./sharedSequence\";\nexport * from \"./sharedObjectSequence\";\nexport * from \"./sharedNumberSequence\";\nexport * from \"./sparsematrix\";\nexport * from \"./sharedIntervalCollection\";\n"]}

lib/intervalCollection.d.ts

@@ -10,2 +10,3 @@ /*!
 import { IValueFactory, IValueOpEmitter, IValueOperation, IValueType } from "./mapKernelInterfaces";
+export declare const reservedIntervalIdKey = "intervalId";
 export interface ISerializedInterval {
@@ -33,2 +34,3 @@ sequenceNumber: number;
     constructor(start: number, end: number, props?: MergeTree.PropertySet);
+    getIntervalId(): string | undefined;
     getAdditionalPropertySets(): MergeTree.PropertySet[];
@@ -59,2 +61,3 @@ addPropertySet(props: MergeTree.PropertySet): void;
     overlaps(b: SequenceInterval): boolean;
+    getIntervalId(): string | undefined;
     union(b: SequenceInterval): SequenceInterval;
@@ -78,2 +81,4 @@ addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp): void;
     map(fn: (interval: TInterval) => void): void;
+    createLegacyId(start: number, end: number): string;
+    ensureSerializedId(serializedInterval: ISerializedInterval): void;
     gatherIterationResults(results: TInterval[], iteratesForward: boolean, start?: number, end?: number): void;
@@ -105,23 +110,2 @@ findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[];
 export declare type DeserializeCallback = (properties: MergeTree.PropertySet) => void;
-export declare class IntervalCollectionView<TInterval extends ISerializableInterval> extends EventEmitter {
-    private readonly client;
-    private readonly emitter;
-    private readonly localCollection;
-    private onDeserialize;
-    constructor(client: MergeTree.Client, savedSerializedIntervals: ISerializedInterval[], label: string, helpers: IIntervalHelpers<TInterval>, emitter: IValueOpEmitter);
-    attachDeserializer(onDeserialize: DeserializeCallback): void;
-    addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void;
-    findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[];
-    map(fn: (interval: TInterval) => void): void;
-    gatherIterationResults(results: TInterval[], iteratesForward: boolean, start?: number, end?: number): void;
-    previousInterval(pos: number): TInterval;
-    nextInterval(pos: number): TInterval;
-    on(event: "addInterval" | "deleteInterval", listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this;
-    add(start: number, end: number, intervalType: MergeTree.IntervalType, props?: MergeTree.PropertySet): TInterval;
-    delete(start: number, end: number): void;
-    addInternal(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage): TInterval;
-    deleteInterval(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage): this;
-    serializeInternal(): any[];
-    private attachDeserializerCore;
-}
 export declare class IntervalCollectionIterator<TInterval extends ISerializableInterval> {
@@ -136,3 +120,3 @@ private readonly results;
 }
-export declare class IntervalCollection<TInterval extends ISerializableInterval> {
+export declare class IntervalCollection<TInterval extends ISerializableInterval> extends EventEmitter {
     private readonly helpers;
@@ -142,10 +126,17 @@ private readonly requiresClient;
     private savedSerializedIntervals?;
-    private view;
+    private localCollection;
+    private onDeserialize;
+    private client;
     get attached(): boolean;
     constructor(helpers: IIntervalHelpers<TInterval>, requiresClient: boolean, emitter: IValueOpEmitter, serializedIntervals: ISerializedInterval[]);
     attachGraph(client: MergeTree.Client, label: string): void;
-    add(startPosition: number, endPosition: number, intervalType: MergeTree.IntervalType, props?: MergeTree.PropertySet): TInterval;
-    delete(startPosition: number, endPosition: number): void;
+    add(start: number, end: number, intervalType: MergeTree.IntervalType, props?: MergeTree.PropertySet): TInterval;
+    delete(start: number, end: number): void;
     addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void;
-    getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollectionView<TInterval>>;
+    attachDeserializer(onDeserialize: DeserializeCallback): void;
+    private attachDeserializerCore;
+    /**
+     * @deprecated - IntervalCollectionView has been removed. Please refer to IntervalCollection directly.
+     */
+    getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollection<TInterval>>;
     addInternal(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage): TInterval;
@@ -160,3 +151,8 @@ deleteInterval(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage): void;
     gatherIterationResults(results: TInterval[], iteratesForward: boolean, start?: number, end?: number): void;
+    findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[];
+    map(fn: (interval: TInterval) => void): void;
+    previousInterval(pos: number): TInterval;
+    nextInterval(pos: number): TInterval;
+    on(event: "addInterval" | "deleteInterval", listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this;
 }
 //# sourceMappingURL=intervalCollection.d.ts.map

lib/intervalCollection.d.ts.map

@@ -1,1 +0,1 @@
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+{"version":3,"file":"intervalCollection.d.ts","sourceRoot":"","sources":["../src/intervalCollection.ts"],"names":[],"mappings":"AAAA;;;GAGG;;AAIH,OAAO,EAAE,YAAY,EAAE,MAAM,QAAQ,CAAC;AACtC,OAAO,KAAK,SAAS,MAAM,4BAA4B,CAAC;AACxD,OAAO,EAAE,yBAAyB,EAAE,MAAM,sCAAsC,CAAC;AAEjF,OAAO,EAAE,aAAa,EAAE,eAAe,EAAE,eAAe,EAAE,UAAU,EAAE,MAAM,uBAAuB,CAAC;AAEpG,eAAO,MAAM,qBAAqB,eAAe,CAAC;AAElD,MAAM,WAAW,mBAAmB;IAChC,cAAc,EAAE,MAAM,CAAC;IACvB,KAAK,EAAE,MAAM,CAAC;IACd,GAAG,EAAE,MAAM,CAAC;IACZ,YAAY,EAAE,SAAS,CAAC,YAAY,CAAC;IACrC,UAAU,CAAC,EAAE,SAAS,CAAC,WAAW,CAAC;CACtC;AAED,MAAM,WAAW,qBAAsB,SAAQ,SAAS,CAAC,SAAS;IAC9D,UAAU,EAAE,SAAS,CAAC,WAAW,CAAC;IAClC,SAAS,CAAC,MAAM,EAAE,SAAS,CAAC,MAAM,OAAE;IACpC,aAAa,CAAC,KAAK,EAAE,SAAS,CAAC,WAAW,OAAE;CAC/C;AAED,MAAM,WAAW,gBAAgB,CAAC,SAAS,SAAS,qBAAqB;IACrE,WAAW,CAAC,CAAC,EAAE,SAAS,EAAE,CAAC,EAAE,SAAS,GAAG,MAAM,CAAC;IAChD,MAAM,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,EAC5C,MAAM,EAAE,SAAS,CAAC,MAAM,EAAE,YAAY,CAAC,EAAE,SAAS,CAAC,YAAY,GAAG,SAAS,CAAC;CACnF;AAED,qBAAa,QAAS,YAAW,qBAAqB;IAIvC,KAAK,EAAE,MAAM;IACb,GAAG,EAAE,MAAM;IAJf,UAAU,EAAE,SAAS,CAAC,WAAW,CAAC;IAClC,QAAQ,EAAE,SAAS,CAAC,WAAW,EAAE,CAAC;gBAE9B,KAAK,EAAE,MAAM,EACb,GAAG,EAAE,MAAM,EAClB,KAAK,CAAC,EAAE,SAAS,CAAC,WAAW;IAM1B,aAAa,IAAI,MAAM,GAAG,SAAS;IAInC,yBAAyB;IAIzB,cAAc,CAAC,KAAK,EAAE,SAAS,CAAC,WAAW;IAO3C,SAAS,CAAC,MAAM,EAAE,SAAS,CAAC,MAAM;IAkBlC,KAAK;IAIL,OAAO,CAAC,CAAC,EAAE,QAAQ;IASnB,YAAY,CAAC,CAAC,EAAE,QAAQ;IAIxB,UAAU,CAAC,CAAC,EAAE,QAAQ;IAItB,QAAQ,CAAC,CAAC,EAAE,QAAQ;IAMpB,KAAK,CAAC,CAAC,EAAE,QAAQ;IAKjB,aAAa;IAIb,aAAa,CAAC,QAAQ,EAAE,SAAS,CAAC,WAAW,EAAE,EAAE,CAAC,EAAE,SAAS,CAAC,YAAY;CAGpF;AAED,qBAAa,gBAAiB,YAAW,qBAAqB;IAK/C,KAAK,EAAE,SAAS,CAAC,cAAc;IAC/B,GAAG,EAAE,SAAS,CAAC,cAAc;IAC7B,YAAY,EAAE,SAAS,CAAC,YAAY;IANxC,UAAU,EAAE,SAAS,CAAC,WAAW,CAAC;IACzC,OAAO,CAAC,QAAQ,CAAC,cAAc,CAAsB;gBAG1C,KAAK,EAAE,SAAS,CAAC,cAAc,EAC/B,GAAG,EAAE,SAAS,CAAC,cAAc,EAC7B,YAAY,EAAE,SAAS,CAAC,YAAY,EAC3C,KAAK,CAAC,EAAE,SAAS,CAAC,WAAW;IAM1B,SAAS,CAAC,MAAM,EAAE,SAAS,CAAC,MAAM;IAelC,KAAK;IAIL,OAAO,CAAC,CAAC,EAAE,gBAAgB;IAS3B,YAAY,CAAC,CAAC,EAAE,gBAAgB;IAIhC,UAAU,CAAC,CAAC,EAAE,gBAAgB;IAI9B,QAAQ,CAAC,CAAC,EAAE,gBAAgB;IAS5B,aAAa,IAAI,MAAM,GAAG,SAAS;IAInC,KAAK,CAAC,CAAC,EAAE,gBAAgB;IAKzB,aAAa,CAAC,QAAQ,EAAE,SAAS,CAAC,WAAW,EAAE,EAAE,CAAC,EAAE,SAAS,CAAC,YAAY;IAI1E,WAAW,CAAC,MAAM,EAAE,MAAM,EAAE,IAAI,EAAE,MAAM;IAM/C,OAAO,CAAC,aAAa;CAiBxB;AAuDD,wBAAgB,+BAA+B,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,EAAE,QAAQ,YAGvE;AAED,wBAAgB,mBAAmB,CAAC,QAAQ,CAAC,EAAE,SAAS,CAAC,wBAAwB,CAAC,QAAQ,CAAC,qCAY1F;AAED,qBAAa,uBAAuB,CAAC,SAAS,SAAS,qBAAqB;IAOpE,OAAO,CAAC,QAAQ,CAAC,MAAM;IACvB,OAAO,CAAC,QAAQ,CAAC,KAAK;IACtB,OAAO,CAAC,QAAQ,CAAC,OAAO;IAR5B,OAAO,CAAC,QAAQ,CAAC,YAAY,CAA2C;IACxE,OAAO,CAAC,QAAQ,CAAC,eAAe,CAA+C;IAC/E,OAAO,CAAC,gBAAgB,CAAgD;IACxE,OAAO,CAAC,mBAAmB,CAAiD;gBAGvD,MAAM,EAAE,SAAS,CAAC,MAAM,EACxB,KAAK,EAAE,MAAM,EACb,OAAO,EAAE,gBAAgB,CAAC,SAAS,CAAC;IAMlD,mBAAmB,CAAC,gBAAgB,EAAE,SAAS,CAAC,wBAAwB,CAAC,SAAS,CAAC;IAYnF,GAAG,CAAC,EAAE,EAAE,CAAC,QAAQ,EAAE,SAAS,KAAK,IAAI;IAIrC,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,GAAG,MAAM;IAMlD,kBAAkB,CAAC,kBAAkB,EAAE,mBAAmB;IAa1D,sBAAsB,CACzB,OAAO,EAAE,SAAS,EAAE,EACpB,eAAe,EAAE,OAAO,EACxB,KAAK,CAAC,EAAE,MAAM,EACd,GAAG,CAAC,EAAE,MAAM;IA4ET,wBAAwB,CAAC,aAAa,EAAE,MAAM,EAAE,WAAW,EAAE,MAAM;IAiBnE,gBAAgB,CAAC,GAAG,EAAE,MAAM;IAS5B,YAAY,CAAC,GAAG,EAAE,MAAM;IASxB,cAAc,CAAC,aAAa,EAAE,MAAM,EAAE,WAAW,EAAE,MAAM;IAQzD,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,EAAE,YAAY,EAAE,SAAS,CAAC,YAAY;IAK/E,WAAW,CACd,KAAK,EAAE,MAAM,EACb,GAAG,EAAE,MAAM,EACX,YAAY,EAAE,SAAS,CAAC,YAAY,EACpC,KAAK,CAAC,EAAE,SAAS,CAAC,WAAW;IAgB1B,SAAS;CAMnB;AAuBD,qBAAa,mCACT,YAAW,UAAU,CAAC,kBAAkB,CAAC,gBAAgB,CAAC,CAAC;IAC3D,OAAc,IAAI,SAAoC;IAEtD,IAAW,IAAI,IAAI,MAAM,CAExB;IAED,IAAW,OAAO,IAAI,aAAa,CAAC,kBAAkB,CAAC,gBAAgB,CAAC,CAAC,CAExE;IAED,IAAW,GAAG,IAAI,GAAG,CAAC,MAAM,EAAE,eAAe,CAAC,kBAAkB,CAAC,gBAAgB,CAAC,CAAC,CAAC,CAEnF;IAED,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,QAAQ,CACY;IAE5C,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,IAAI,CAyBhB;CACf;AAgCD,qBAAa,2BACT,YAAW,UAAU,CAAC,kBAAkB,CAAC,QAAQ,CAAC,CAAC;IACnD,OAAc,IAAI,SAA8B;IAEhD,IAAW,IAAI,IAAI,MAAM,CAExB;IAED,IAAW,OAAO,IAAI,aAAa,CAAC,kBAAkB,CAAC,QAAQ,CAAC,CAAC,CAEhE;IAED,IAAW,GAAG,IAAI,GAAG,CAAC,MAAM,EAAE,eAAe,CAAC,kBAAkB,CAAC,QAAQ,CAAC,CAAC,CAAC,CAE3E;IAED,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,QAAQ,CACI;IACpC,OAAO,CAAC,MAAM,CAAC,QAAQ,CAAC,IAAI,CAyBhB;CACf;AAED,oBAAY,mBAAmB,GAAG,CAAC,UAAU,EAAE,SAAS,CAAC,WAAW,KAAK,IAAI,CAAC;AAE9E,qBAAa,0BAA0B,CAAC,SAAS,SAAS,qBAAqB;IAC3E,OAAO,CAAC,QAAQ,CAAC,OAAO,CAAc;IACtC,OAAO,CAAC,KAAK,CAAS;gBAGlB,UAAU,EAAE,kBAAkB,CAAC,SAAS,CAAC,EACzC,eAAe,GAAE,OAAc,EAC/B,KAAK,CAAC,EAAE,MAAM,EACd,GAAG,CAAC,EAAE,MAAM;IAOT,IAAI;;;;CAcd;AAED,qBAAa,kBAAkB,CAAC,SAAS,SAAS,qBAAqB,CAAE,SAAQ,YAAY;IAW7E,OAAO,CAAC,QAAQ,CAAC,OAAO;IAA+B,OAAO,CAAC,QAAQ,CAAC,cAAc;IAC9F,OAAO,CAAC,QAAQ,CAAC,OAAO;IAX5B,OAAO,CAAC,wBAAwB,CAAC,CAAwB;IACzD,OAAO,CAAC,eAAe,CAAqC;IAC5D,OAAO,CAAC,aAAa,CAAsB;IAC3C,OAAO,CAAC,MAAM,CAAmB;IAEjC,IAAW,QAAQ,IAAI,OAAO,CAG7B;gBAE4B,OAAO,EAAE,gBAAgB,CAAC,SAAS,CAAC,EAAmB,cAAc,EAAE,OAAO,EACtF,OAAO,EAAE,eAAe,EACzC,mBAAmB,EAAE,mBAAmB,EAAE;IAKvC,WAAW,CAAC,MAA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lib/intervalCollection.js

@@ -8,2 +8,4 @@ /*!
 import * as MergeTree from "@fluidframework/merge-tree";
+import { v4 as uuid } from "uuid";
+export const reservedIntervalIdKey = "intervalId";
 export class Interval {
@@ -17,2 +19,6 @@ constructor(start, end, props) {
     }
+    getIntervalId() {
+        var _a, _b;
+        return (_b = (_a = this.properties) === null || _a === void 0 ? void 0 : _a[reservedIntervalIdKey]) === null || _b === void 0 ? void 0 : _b.toString();
+    }
     getAdditionalPropertySets() {
@@ -125,2 +131,6 @@ return this.auxProps;
     }
+    getIntervalId() {
+        var _a, _b;
+        return (_b = (_a = this.properties) === null || _a === void 0 ? void 0 : _a[reservedIntervalIdKey]) === null || _b === void 0 ? void 0 : _b.toString();
+    }
     union(b) {
@@ -238,2 +248,17 @@ return new SequenceInterval(this.start.min(b.start), this.end.max(b.end), this.intervalType);
     }
+    createLegacyId(start, end) {
+        // Create a non-unique ID based on start and end to be used on intervals that come from legacy clients
+        // without ID's.
+        return `${start}-${end}`;
+    }
+    ensureSerializedId(serializedInterval) {
+        var _a;
+        if (((_a = serializedInterval.properties) === null || _a === void 0 ? void 0 : _a[reservedIntervalIdKey]) === undefined) {
+            // An interval came over the wire without an ID, so create a non-unique one based on start/end.
+            // This will allow all clients to refer to this interval consistently.
+            serializedInterval.properties = MergeTree.addProperties(serializedInterval.properties, {
+                [reservedIntervalIdKey]: this.createLegacyId(serializedInterval.start, serializedInterval.end),
+            });
+        }
+    }
     gatherIterationResults(results, iteratesForward, start, end) {
@@ -341,2 +366,5 @@ if (this.intervalTree.intervals.isEmpty()) {
             }
+            if (interval.properties[reservedIntervalIdKey] === undefined) {
+                interval.properties[reservedIntervalIdKey] = uuid();
+            }
             this.intervalTree.put(interval, this.conflictResolver);
@@ -465,40 +493,55 @@ this.endIntervalTree.put(interval, interval, this.endConflictResolver);
     ]]);
-export class IntervalCollectionView extends EventEmitter {
-    constructor(client, savedSerializedIntervals, label, helpers, emitter) {
+export class IntervalCollectionIterator {
+    constructor(collection, iteratesForward = true, start, end) {
+        this.results = [];
+        this.index = 0;
+        collection.gatherIterationResults(this.results, iteratesForward, start, end);
+    }
+    next() {
+        let _value;
+        let _done = true;
+        if (this.index < this.results.length) {
+            _value = this.results[this.index++];
+            _done = false;
+        }
+        return {
+            value: _value,
+            done: _done,
+        };
+    }
+}
+export class IntervalCollection extends EventEmitter {
+    constructor(helpers, requiresClient, emitter, serializedIntervals) {
         super();
-        this.client = client;
+        this.helpers = helpers;
+        this.requiresClient = requiresClient;
         this.emitter = emitter;
+        this.savedSerializedIntervals = serializedIntervals;
+    }
+    get attached() {
+        // return !!this.view;
+        return !!this.localCollection;
+    }
+    attachGraph(client, label) {
+        if (this.attached) {
+            throw new Error("Only supports one Sequence attach");
+        }
+        if ((client === undefined) && (this.requiresClient)) {
+            throw new Error("Client required for this collection");
+        }
         // Instantiate the local interval collection based on the saved intervals
-        this.localCollection = new LocalIntervalCollection(client, label, helpers);
-        if (savedSerializedIntervals) {
-            for (const serializedInterval of savedSerializedIntervals) {
+        this.client = client;
+        this.localCollection = new LocalIntervalCollection(client, label, this.helpers);
+        if (this.savedSerializedIntervals) {
+            for (const serializedInterval of this.savedSerializedIntervals) {
+                this.localCollection.ensureSerializedId(serializedInterval);
                 this.localCollection.addInterval(serializedInterval.start, serializedInterval.end, serializedInterval.intervalType, serializedInterval.properties);
             }
         }
+        this.savedSerializedIntervals = undefined;
     }
-    attachDeserializer(onDeserialize) {
-        this.attachDeserializerCore(onDeserialize);
-    }
-    addConflictResolver(conflictResolver) {
-        this.localCollection.addConflictResolver(conflictResolver);
-    }
-    findOverlappingIntervals(startPosition, endPosition) {
-        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);
-    }
-    map(fn) {
-        this.localCollection.map(fn);
-    }
-    gatherIterationResults(results, iteratesForward, start, end) {
-        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);
-    }
-    previousInterval(pos) {
-        return this.localCollection.previousInterval(pos);
-    }
-    nextInterval(pos) {
-        return this.localCollection.nextInterval(pos);
-    }
-    on(event, listener) {
-        return super.on(event, listener);
-    }
     add(start, end, intervalType, props) {
+        if (!this.attached) {
+            throw new Error("attach must be called prior to adding intervals");
+        }
         let seq = 0;
@@ -519,2 +562,5 @@ if (this.client) {
         let sequenceNumber = 0;
+        if (!this.attached) {
+            throw new Error("attach must be called prior to deleting intervals");
+        }
         if (this.client) {
@@ -531,4 +577,43 @@ sequenceNumber = this.client.getCurrentSeq();
     }
-    // TODO: error cases
+    addConflictResolver(conflictResolver) {
+        if (!this.attached) {
+            throw new Error("attachSequence must be called");
+        }
+        this.localCollection.addConflictResolver(conflictResolver);
+    }
+    attachDeserializer(onDeserialize) {
+        this.attachDeserializerCore(onDeserialize);
+    }
+    attachDeserializerCore(onDeserialize) {
+        // If no deserializer is specified can skip all processing work
+        if (!onDeserialize) {
+            return;
+        }
+        // Start by storing the callbacks so that any subsequent modifications make use of them
+        this.onDeserialize = onDeserialize;
+        // Trigger the async prepare work across all values in the collection
+        this.localCollection.map((interval) => {
+            this.onDeserialize(interval);
+        });
+    }
+    /**
+     * @deprecated - IntervalCollectionView has been removed. Please refer to IntervalCollection directly.
+     */
+    async getView(onDeserialize) {
+        if (!this.attached) {
+            return Promise.reject(new Error("attachSequence must be called prior to retrieving the view"));
+        }
+        // Attach custom deserializers if specified
+        if (onDeserialize) {
+            this.attachDeserializer(onDeserialize);
+        }
+        return this;
+    }
     addInternal(serializedInterval, local, op) {
+        if (!this.attached) {
+            throw new Error("attachSequence must be called");
+        }
+        if (!local) {
+            this.localCollection.ensureSerializedId(serializedInterval);
+        }
         const interval = this.localCollection.addInterval(serializedInterval.start, serializedInterval.end, serializedInterval.intervalType, serializedInterval.properties);
@@ -550,2 +635,5 @@ if (interval) {
     deleteInterval(serializedInterval, local, op) {
+        if (!this.attached) {
+            throw new Error("attach must be called prior to deleting intervals");
+        }
         const interval = this.localCollection.removeInterval(serializedInterval.start, serializedInterval.end);
@@ -564,103 +652,9 @@ if (interval) {
         this.emit("deleteInterval", interval, local, op);
-        return this;
     }
     serializeInternal() {
-        // eslint-disable-next-line @typescript-eslint/no-unsafe-return
-        return this.localCollection.serialize();
-    }
-    attachDeserializerCore(onDeserialize) {
-        // If no deserializer is specified can skip all processing work
-        if (!onDeserialize) {
-            return;
-        }
-        // Start by storing the callbacks so that any subsequent modifications make use of them
-        this.onDeserialize = onDeserialize;
-        // Trigger the async prepare work across all values in the collection
-        this.localCollection.map((interval) => {
-            this.onDeserialize(interval);
-        });
-    }
-}
-export class IntervalCollectionIterator {
-    constructor(collection, iteratesForward = true, start, end) {
-        this.results = [];
-        this.index = 0;
-        collection.gatherIterationResults(this.results, iteratesForward, start, end);
-    }
-    next() {
-        let _value;
-        let _done = true;
-        if (this.index < this.results.length) {
-            _value = this.results[this.index++];
-            _done = false;
-        }
-        return {
-            value: _value,
-            done: _done,
-        };
-    }
-}
-export class IntervalCollection {
-    constructor(helpers, requiresClient, emitter, serializedIntervals) {
-        this.helpers = helpers;
-        this.requiresClient = requiresClient;
-        this.emitter = emitter;
-        this.savedSerializedIntervals = serializedIntervals;
-    }
-    get attached() {
-        return !!this.view;
-    }
-    attachGraph(client, label) {
-        if (this.view) {
-            throw new Error("Only supports one Sequence attach");
-        }
-        if ((client === undefined) && (this.requiresClient)) {
-            throw new Error("Client required for this collection");
-        }
-        this.view = new IntervalCollectionView(client, this.savedSerializedIntervals, label, this.helpers, this.emitter);
-        this.savedSerializedIntervals = undefined;
-    }
-    add(startPosition, endPosition, intervalType, props) {
-        if (!this.view) {
-            throw new Error("attach must be called prior to adding intervals");
-        }
-        return this.view.add(startPosition, endPosition, intervalType, props);
-    }
-    delete(startPosition, endPosition) {
-        if (!this.view) {
-            throw new Error("attach must be called prior to deleting intervals");
-        }
-        this.view.delete(startPosition, endPosition);
-    }
-    addConflictResolver(conflictResolver) {
-        this.view.addConflictResolver(conflictResolver);
-    }
-    async getView(onDeserialize) {
-        if (!this.view) {
-            return Promise.reject(new Error("attachSequence must be called prior to retrieving the view"));
-        }
-        // Attach custom deserializers if specified
-        if (onDeserialize) {
-            this.view.attachDeserializer(onDeserialize);
-        }
-        return this.view;
-    }
-    addInternal(serializedInterval, local, op) {
-        if (!this.view) {
+        if (!this.attached) {
             throw new Error("attachSequence must be called");
         }
-        return this.view.addInternal(serializedInterval, local, op);
-    }
-    deleteInterval(serializedInterval, local, op) {
-        if (!this.view) {
-            throw new Error("attach must be called prior to deleting intervals");
-        }
-        this.view.deleteInterval(serializedInterval, local, op);
-    }
-    serializeInternal() {
-        if (!this.view) {
-            throw new Error("attachSequence must be called");
-        }
         // eslint-disable-next-line @typescript-eslint/no-unsafe-return
-        return this.view.serializeInternal();
+        return this.localCollection.serialize();
     }
@@ -688,8 +682,23 @@ [Symbol.iterator]() {
     gatherIterationResults(results, iteratesForward, start, end) {
-        if (!this.view) {
+        if (!this.attached) {
             return;
         }
-        this.view.gatherIterationResults(results, iteratesForward, start, end);
+        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);
     }
+    findOverlappingIntervals(startPosition, endPosition) {
+        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);
+    }
+    map(fn) {
+        this.localCollection.map(fn);
+    }
+    previousInterval(pos) {
+        return this.localCollection.previousInterval(pos);
+    }
+    nextInterval(pos) {
+        return this.localCollection.nextInterval(pos);
+    }
+    on(event, listener) {
+        return super.on(event, listener);
+    }
 }
 //# sourceMappingURL=intervalCollection.js.map

lib/intervalCollection.js.map

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* Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\n/* eslint-disable no-bitwise */\n\nimport { EventEmitter } from \"events\";\nimport * as MergeTree from \"@fluidframework/merge-tree\";\nimport { ISequencedDocumentMessage } from \"@fluidframework/protocol-definitions\";\n\nimport { IValueFactory, IValueOpEmitter, IValueOperation, IValueType } from \"./mapKernelInterfaces\";\n\nexport interface ISerializedInterval {\n    sequenceNumber: number;\n    start: number;\n    end: number;\n    intervalType: MergeTree.IntervalType;\n    properties?: MergeTree.PropertySet;\n}\n\nexport interface ISerializableInterval extends MergeTree.IInterval {\n    properties: MergeTree.PropertySet;\n    serialize(client: MergeTree.Client);\n    addProperties(props: MergeTree.PropertySet);\n}\n\nexport interface IIntervalHelpers<TInterval extends ISerializableInterval> {\n    compareEnds(a: TInterval, b: TInterval): number;\n    create(label: string, start: number, end: number,\n        client: MergeTree.Client, intervalType?: MergeTree.IntervalType): TInterval;\n}\n\nexport class Interval implements ISerializableInterval {\n    public properties: MergeTree.PropertySet;\n    public auxProps: MergeTree.PropertySet[];\n    constructor(\n        public start: number,\n        public end: number,\n        props?: MergeTree.PropertySet) {\n        if (props) {\n            this.addProperties(props);\n        }\n    }\n\n    public getAdditionalPropertySets() {\n        return this.auxProps;\n    }\n\n    public addPropertySet(props: MergeTree.PropertySet) {\n        if (this.auxProps === undefined) {\n            this.auxProps = [];\n        }\n        this.auxProps.push(props);\n    }\n\n    public serialize(client: MergeTree.Client) {\n        let seq = 0;\n        if (client) {\n            seq = client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            end: this.end,\n            intervalType: 0,\n            sequenceNumber: seq,\n            start: this.start,\n        };\n        if (this.properties) {\n            serializedInterval.properties = this.properties;\n        }\n        return serializedInterval;\n    }\n\n    public clone() {\n        return new Interval(this.start, this.end, this.properties);\n    }\n\n    public compare(b: Interval) {\n        const startResult = this.compareStart(b);\n        if (startResult === 0) {\n            return this.compareEnd(b);\n        } else {\n            return startResult;\n        }\n    }\n\n    public compareStart(b: Interval) {\n        return this.start - b.start;\n    }\n\n    public compareEnd(b: Interval) {\n        return this.end - b.end;\n    }\n\n    public overlaps(b: Interval) {\n        const result = (this.start < b.end) &&\n            (this.end >= b.start);\n        return result;\n    }\n\n    public union(b: Interval) {\n        return new Interval(Math.min(this.start, b.start),\n            Math.max(this.end, b.end), this.properties);\n    }\n\n    public getProperties() {\n        return this.properties;\n    }\n\n    public addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp) {\n        this.properties = MergeTree.addProperties(this.properties, newProps, op);\n    }\n}\n\nexport class SequenceInterval implements ISerializableInterval {\n    public properties: MergeTree.PropertySet;\n    private readonly checkMergeTree: MergeTree.MergeTree;\n\n    constructor(\n        public start: MergeTree.LocalReference,\n        public end: MergeTree.LocalReference,\n        public intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet) {\n        if (props) {\n            this.addProperties(props);\n        }\n    }\n\n    public serialize(client: MergeTree.Client) {\n        const startPosition = this.start.toPosition();\n        const endPosition = this.end.toPosition();\n        const serializedInterval: ISerializedInterval = {\n            end: endPosition,\n            intervalType: this.intervalType,\n            sequenceNumber: client.getCurrentSeq(),\n            start: startPosition,\n        };\n        if (this.properties) {\n            serializedInterval.properties = this.properties;\n        }\n        return serializedInterval;\n    }\n\n    public clone() {\n        return new SequenceInterval(this.start, this.end, this.intervalType);\n    }\n\n    public compare(b: SequenceInterval) {\n        const startResult = this.compareStart(b);\n        if (startResult === 0) {\n            return this.compareEnd(b);\n        } else {\n            return startResult;\n        }\n    }\n\n    public compareStart(b: SequenceInterval) {\n        return this.start.compare(b.start);\n    }\n\n    public compareEnd(b: SequenceInterval) {\n        return this.end.compare(b.end);\n    }\n\n    public overlaps(b: SequenceInterval) {\n        const result = (this.start.compare(b.end) < 0) &&\n            (this.end.compare(b.start) >= 0);\n        if (this.checkMergeTree) {\n            this.checkOverlaps(b, result);\n        }\n        return result;\n    }\n\n    public union(b: SequenceInterval) {\n        return new SequenceInterval(this.start.min(b.start),\n            this.end.max(b.end), this.intervalType);\n    }\n\n    public addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp) {\n        this.properties = MergeTree.addProperties(this.properties, newProps, op);\n    }\n\n    public overlapsPos(bstart: number, bend: number) {\n        const startPos = this.start.toPosition();\n        const endPos = this.start.toPosition();\n        return (endPos > bstart) && (startPos < bend);\n    }\n\n    private checkOverlaps(b: SequenceInterval, result: boolean) {\n        const astart = this.start.toPosition();\n        const bstart = b.start.toPosition();\n        const aend = this.end.toPosition();\n        const bend = b.end.toPosition();\n        const checkResult = ((astart < bend) && (bstart < aend));\n        if (checkResult !== result) {\n            // eslint-disable-next-line max-len\n            console.log(`check mismatch: res ${result} ${this.start.segment === b.end.segment} ${b.start.segment === this.end.segment}`);\n            console.log(`as ${astart} ae ${aend} bs ${bstart} be ${bend}`);\n            console.log(`as ${MergeTree.ordinalToArray(this.start.segment.ordinal)}@${this.start.offset}`);\n            console.log(`ae ${MergeTree.ordinalToArray(this.end.segment.ordinal)}@${this.end.offset}`);\n            console.log(`bs ${MergeTree.ordinalToArray(b.start.segment.ordinal)}@${b.start.offset}`);\n            console.log(`be ${MergeTree.ordinalToArray(b.end.segment.ordinal)}@${b.end.offset}`);\n            console.log(this.checkMergeTree.nodeToString(b.start.segment.parent, \"\"));\n        }\n    }\n}\n\nfunction createPositionReference(\n    client: MergeTree.Client,\n    pos: number,\n    refType: MergeTree.ReferenceType): MergeTree.LocalReference {\n    const segoff = client.getContainingSegment(pos);\n    if (segoff && segoff.segment) {\n        const lref = new MergeTree.LocalReference(client, segoff.segment, segoff.offset, refType);\n        if (refType !== MergeTree.ReferenceType.Transient) {\n            client.addLocalReference(lref);\n        }\n        return lref;\n    }\n    return new MergeTree.LocalReference(client, undefined);\n}\n\nfunction createSequenceInterval(\n    label: string,\n    start: number,\n    end: number,\n    client: MergeTree.Client,\n    intervalType: MergeTree.IntervalType): SequenceInterval {\n    let beginRefType = MergeTree.ReferenceType.RangeBegin;\n    let endRefType = MergeTree.ReferenceType.RangeEnd;\n    if (intervalType === MergeTree.IntervalType.Nest) {\n        beginRefType = MergeTree.ReferenceType.NestBegin;\n        endRefType = MergeTree.ReferenceType.NestEnd;\n    } else if (intervalType === MergeTree.IntervalType.Transient) {\n        beginRefType = MergeTree.ReferenceType.Transient;\n        endRefType = MergeTree.ReferenceType.Transient;\n    }\n\n    // TODO: Should SlideOnRemove be the default behavior?\n    if (intervalType & MergeTree.IntervalType.SlideOnRemove) {\n        beginRefType |= MergeTree.ReferenceType.SlideOnRemove;\n        endRefType |= MergeTree.ReferenceType.SlideOnRemove;\n    }\n\n    const startLref = createPositionReference(client, start, beginRefType);\n    const endLref = createPositionReference(client, end, endRefType);\n    if (startLref && endLref) {\n        startLref.pairedRef = endLref;\n        endLref.pairedRef = startLref;\n        const rangeProp = {\n            [MergeTree.reservedRangeLabelsKey]: [label],\n        };\n        startLref.addProperties(rangeProp);\n        endLref.addProperties(rangeProp);\n\n        const ival = new SequenceInterval(startLref, endLref, intervalType, rangeProp);\n        return ival;\n    }\n}\n\nexport function defaultIntervalConflictResolver(a: Interval, b: Interval) {\n    a.addPropertySet(b.properties);\n    return a;\n}\n\nexport function createIntervalIndex(conflict?: MergeTree.IntervalConflictResolver<Interval>) {\n    const helpers: IIntervalHelpers<Interval> = {\n        compareEnds: compareIntervalEnds,\n        create: createInterval,\n    };\n    const lc = new LocalIntervalCollection<Interval>(undefined, \"\", helpers);\n    if (conflict) {\n        lc.addConflictResolver(conflict);\n    } else {\n        lc.addConflictResolver(defaultIntervalConflictResolver);\n    }\n    return lc;\n}\n\nexport class LocalIntervalCollection<TInterval extends ISerializableInterval> {\n    private readonly intervalTree = new MergeTree.IntervalTree<TInterval>();\n    private readonly endIntervalTree: MergeTree.RedBlackTree<TInterval, TInterval>;\n    private conflictResolver: MergeTree.IntervalConflictResolver<TInterval>;\n    private endConflictResolver: MergeTree.ConflictAction<TInterval, TInterval>;\n\n    constructor(\n        private readonly client: MergeTree.Client,\n        private readonly label: string,\n        private readonly helpers: IIntervalHelpers<TInterval>) {\n        this.endIntervalTree =\n            // eslint-disable-next-line @typescript-eslint/unbound-method\n            new MergeTree.RedBlackTree<TInterval, TInterval>(helpers.compareEnds);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>) {\n        this.conflictResolver = conflictResolver;\n        this.endConflictResolver =\n            (key: TInterval, currentKey: TInterval) => {\n                const ival = this.conflictResolver(key, currentKey);\n                return {\n                    data: ival,\n                    key: ival,\n                };\n            };\n    }\n\n    public map(fn: (interval: TInterval) => void) {\n        this.intervalTree.map(fn);\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        if (this.intervalTree.intervals.isEmpty()) {\n            return;\n        }\n\n        if (start === undefined && end === undefined) {\n            // No start/end provided. Gather the whole tree in the specified order.\n            if (iteratesForward) {\n                this.intervalTree.map((interval: TInterval) => {\n                    results.push(interval);\n                });\n            }\n            else {\n                this.intervalTree.mapBackward((interval: TInterval) => {\n                    results.push(interval);\n                });\n            }\n        }\n        else {\n            const transientInterval: TInterval = this.helpers.create(\n                \"transient\",\n                start,\n                end,\n                this.client,\n                MergeTree.IntervalType.Transient,\n            );\n\n            if (start === undefined) {\n                // Only end position provided. Since the tree is not sorted by end position,\n                // walk the whole tree in the specified order, gathering intervals that match the end.\n                if (iteratesForward) {\n                    this.intervalTree.map((interval: TInterval) => {\n                        if (transientInterval.compareEnd(interval) === 0) {\n                            results.push(interval);\n                        }\n                    });\n                }\n                else {\n                    this.intervalTree.mapBackward((interval: TInterval) => {\n                        if (transientInterval.compareEnd(interval) === 0) {\n                            results.push(interval);\n                        }\n                    });\n                }\n            }\n            else {\n                // Start and (possibly) end provided. Walk the subtrees that may contain\n                // this start position.\n                const compareFn =\n                    end === undefined ?\n                        (node: MergeTree.IntervalNode<TInterval>) => {\n                            return transientInterval.compareStart(node.key);\n                        } :\n                        (node: MergeTree.IntervalNode<TInterval>) => {\n                            return transientInterval.compare(node.key);\n                        };\n                const continueLeftFn = (cmpResult: number) => cmpResult <= 0;\n                const continueRightFn = (cmpResult: number) => cmpResult >= 0;\n                const actionFn = (node: MergeTree.IntervalNode<TInterval>) => {\n                    results.push(node.key);\n                };\n\n                if (iteratesForward) {\n                    this.intervalTree.intervals.walkExactMatchesForward(\n                        compareFn, actionFn, continueLeftFn, continueRightFn,\n                    );\n                }\n                else {\n                    this.intervalTree.intervals.walkExactMatchesBackward(\n                        compareFn, actionFn, continueLeftFn, continueRightFn,\n                    );\n                }\n            }\n        }\n    }\n\n    public findOverlappingIntervals(startPosition: number, endPosition: number) {\n        if (!this.intervalTree.intervals.isEmpty()) {\n            const transientInterval =\n                this.helpers.create(\n                    \"transient\",\n                    startPosition,\n                    endPosition,\n                    this.client,\n                    MergeTree.IntervalType.Transient);\n\n            const overlappingIntervalNodes = this.intervalTree.match(transientInterval);\n            return overlappingIntervalNodes.map((node) => node.key);\n        } else {\n            return [];\n        }\n    }\n\n    public previousInterval(pos: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", pos, pos, this.client, MergeTree.IntervalType.Transient);\n        const rbNode = this.endIntervalTree.floor(transientInterval);\n        if (rbNode) {\n            return rbNode.data;\n        }\n    }\n\n    public nextInterval(pos: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", pos, pos, this.client, MergeTree.IntervalType.Transient);\n        const rbNode = this.endIntervalTree.ceil(transientInterval);\n        if (rbNode) {\n            return rbNode.data;\n        }\n    }\n\n    public removeInterval(startPosition: number, endPosition: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", startPosition, endPosition, this.client, MergeTree.IntervalType.Transient);\n        this.intervalTree.remove(transientInterval);\n        this.endIntervalTree.remove(transientInterval);\n        return transientInterval;\n    }\n\n    public createInterval(start: number, end: number, intervalType: MergeTree.IntervalType) {\n        return this.helpers.create(this.label, start, end, this.client, intervalType);\n    }\n\n    // TODO: remove interval, handle duplicate intervals\n    public addInterval(\n        start: number,\n        end: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet) {\n        const interval = this.createInterval(start, end, intervalType);\n        if (interval) {\n            interval.addProperties(props);\n            if (this.label && (this.label.length > 0)) {\n                interval.properties[MergeTree.reservedRangeLabelsKey] = [this.label];\n            }\n            this.intervalTree.put(interval, this.conflictResolver);\n            this.endIntervalTree.put(interval, interval, this.endConflictResolver);\n        }\n        return interval;\n    }\n\n    public serialize() {\n        const client = this.client;\n        const intervals = this.intervalTree.intervals.keys();\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return intervals.map((interval) => interval.serialize(client));\n    }\n}\n\nconst compareSequenceIntervalEnds = (a: SequenceInterval, b: SequenceInterval): number => a.end.compare(b.end);\n\nclass SequenceIntervalCollectionFactory\n    implements IValueFactory<IntervalCollection<SequenceInterval>> {\n    public load(\n        emitter: IValueOpEmitter,\n        raw: ISerializedInterval[] = [],\n    ): IntervalCollection<SequenceInterval> {\n        const helpers: IIntervalHelpers<SequenceInterval> = {\n            compareEnds: compareSequenceIntervalEnds,\n            create: createSequenceInterval,\n        };\n        return new IntervalCollection<SequenceInterval>(helpers, true, emitter, raw);\n    }\n\n    public store(value: IntervalCollection<SequenceInterval>): ISerializedInterval[] {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return value.serializeInternal();\n    }\n}\n\nexport class SequenceIntervalCollectionValueType\n    implements IValueType<IntervalCollection<SequenceInterval>> {\n    public static Name = \"sharedStringIntervalCollection\";\n\n    public get name(): string {\n        return SequenceIntervalCollectionValueType.Name;\n    }\n\n    public get factory(): IValueFactory<IntervalCollection<SequenceInterval>> {\n        return SequenceIntervalCollectionValueType._factory;\n    }\n\n    public get ops(): Map<string, IValueOperation<IntervalCollection<SequenceInterval>>> {\n        return SequenceIntervalCollectionValueType._ops;\n    }\n\n    private static readonly _factory: IValueFactory<IntervalCollection<SequenceInterval>> =\n        new SequenceIntervalCollectionFactory();\n\n    private static readonly _ops: Map<string, IValueOperation<IntervalCollection<SequenceInterval>>> =\n        new Map<string, IValueOperation<IntervalCollection<SequenceInterval>>>(\n            [[\n                \"add\",\n                {\n                    process: (value, params, local, op) => {\n                        // Local ops were applied when the message was created\n                        if (local) {\n                            return;\n                        }\n\n                        value.addInternal(params, local, op);\n                    },\n                },\n            ],\n            [\n                \"delete\",\n                {\n                    process: (value, params, local, op) => {\n                        if (local) {\n                            return;\n                        }\n                        value.deleteInterval(params, local, op);\n                    },\n                },\n            ]]);\n}\n\nconst compareIntervalEnds = (a: Interval, b: Interval) => a.end - b.end;\n\nfunction createInterval(label: string, start: number, end: number, client: MergeTree.Client): Interval {\n    let rangeProp: MergeTree.PropertySet;\n    if (label && (label.length > 0)) {\n        rangeProp = {\n            [MergeTree.reservedRangeLabelsKey]: [label],\n        };\n    }\n    return new Interval(start, end, rangeProp);\n}\n\nclass IntervalCollectionFactory\n    implements IValueFactory<IntervalCollection<Interval>> {\n    public load(emitter: IValueOpEmitter, raw: ISerializedInterval[] = []): IntervalCollection<Interval> {\n        const helpers: IIntervalHelpers<Interval> = {\n            compareEnds: compareIntervalEnds,\n            create: createInterval,\n        };\n        const collection = new IntervalCollection<Interval>(helpers, false, emitter, raw);\n        collection.attachGraph(undefined, \"\");\n        return collection;\n    }\n\n    public store(value: IntervalCollection<Interval>): ISerializedInterval[] {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return value.serializeInternal();\n    }\n}\n\nexport class IntervalCollectionValueType\n    implements IValueType<IntervalCollection<Interval>> {\n    public static Name = \"sharedIntervalCollection\";\n\n    public get name(): string {\n        return IntervalCollectionValueType.Name;\n    }\n\n    public get factory(): IValueFactory<IntervalCollection<Interval>> {\n        return IntervalCollectionValueType._factory;\n    }\n\n    public get ops(): Map<string, IValueOperation<IntervalCollection<Interval>>> {\n        return IntervalCollectionValueType._ops;\n    }\n\n    private static readonly _factory: IValueFactory<IntervalCollection<Interval>> =\n        new IntervalCollectionFactory();\n    private static readonly _ops: Map<string, IValueOperation<IntervalCollection<Interval>>> =\n        new Map<string, IValueOperation<IntervalCollection<Interval>>>(\n            [[\n                \"add\",\n                {\n                    process: (value, params, local, op) => {\n                        // Local ops were applied when the message was created\n                        if (local) {\n                            return;\n                        }\n\n                        value.addInternal(params, local, op);\n                    },\n                },\n            ],\n            [\n                \"delete\",\n                {\n                    process: (value, params, local, op) => {\n                        if (local) {\n                            return;\n                        }\n                        value.deleteInterval(params, local, op);\n                    },\n                },\n            ]]);\n}\n\nexport type DeserializeCallback = (properties: MergeTree.PropertySet) => void;\n\nexport class IntervalCollectionView<TInterval extends ISerializableInterval> extends EventEmitter {\n    private readonly localCollection: LocalIntervalCollection<TInterval>;\n    private onDeserialize: DeserializeCallback;\n\n    constructor(\n        private readonly client: MergeTree.Client,\n        savedSerializedIntervals: ISerializedInterval[],\n        label: string,\n        helpers: IIntervalHelpers<TInterval>,\n        private readonly emitter: IValueOpEmitter) {\n        super();\n\n        // Instantiate the local interval collection based on the saved intervals\n        this.localCollection = new LocalIntervalCollection<TInterval>(client, label, helpers);\n        if (savedSerializedIntervals) {\n            for (const serializedInterval of savedSerializedIntervals) {\n                this.localCollection.addInterval(\n                    serializedInterval.start,\n                    serializedInterval.end,\n                    serializedInterval.intervalType,\n                    serializedInterval.properties);\n            }\n        }\n    }\n\n    public attachDeserializer(onDeserialize: DeserializeCallback): void {\n        this.attachDeserializerCore(onDeserialize);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void {\n        this.localCollection.addConflictResolver(conflictResolver);\n    }\n\n    public findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[] {\n        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);\n    }\n\n    public map(fn: (interval: TInterval) => void) {\n        this.localCollection.map(fn);\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);\n    }\n\n    public previousInterval(pos: number): TInterval {\n        return this.localCollection.previousInterval(pos);\n    }\n\n    public nextInterval(pos: number): TInterval {\n        return this.localCollection.nextInterval(pos);\n    }\n\n    public on(\n        event: \"addInterval\" | \"deleteInterval\",\n        listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this {\n        return super.on(event, listener);\n    }\n\n    public add(\n        start: number,\n        end: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet,\n    ) {\n        let seq = 0;\n        if (this.client) {\n            seq = this.client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            end,\n            intervalType,\n            properties: props,\n            sequenceNumber: seq,\n            start,\n        };\n\n        return this.addInternal(serializedInterval, true, undefined);\n    }\n\n    public delete(\n        start: number,\n        end: number) {\n        let sequenceNumber = 0;\n        if (this.client) {\n            sequenceNumber = this.client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            start,\n            end,\n            sequenceNumber,\n            intervalType: MergeTree.IntervalType.Transient,\n        };\n\n        this.deleteInterval(serializedInterval, true, undefined);\n    }\n\n    // TODO: error cases\n    public addInternal(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) {\n        const interval = this.localCollection.addInterval(\n            serializedInterval.start,\n            serializedInterval.end,\n            serializedInterval.intervalType,\n            serializedInterval.properties);\n\n        if (interval) {\n            // Local ops get submitted to the server. Remote ops have the deserializer run.\n            if (local) {\n                this.emitter.emit(\"add\", undefined, serializedInterval);\n            } else {\n                if (this.onDeserialize) {\n                    this.onDeserialize(interval);\n                }\n            }\n        }\n\n        this.emit(\"addInterval\", interval, local, op);\n\n        return interval;\n    }\n\n    public deleteInterval(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) {\n        const interval = this.localCollection.removeInterval(serializedInterval.start, serializedInterval.end);\n\n        if (interval) {\n            // Local ops get submitted to the server. Remote ops have the deserializer run.\n            if (local) {\n                this.emitter.emit(\"delete\", undefined, serializedInterval);\n            } else {\n                if (this.onDeserialize) {\n                    this.onDeserialize(interval);\n                }\n            }\n        }\n\n        this.emit(\"deleteInterval\", interval, local, op);\n\n        return this;\n    }\n\n    public serializeInternal() {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return this.localCollection.serialize();\n    }\n\n    private attachDeserializerCore(onDeserialize?: DeserializeCallback): void {\n        // If no deserializer is specified can skip all processing work\n        if (!onDeserialize) {\n            return;\n        }\n\n        // Start by storing the callbacks so that any subsequent modifications make use of them\n        this.onDeserialize = onDeserialize;\n\n        // Trigger the async prepare work across all values in the collection\n        this.localCollection.map((interval) => {\n            this.onDeserialize(interval);\n        });\n    }\n}\n\nexport class IntervalCollectionIterator<TInterval extends ISerializableInterval> {\n    private readonly results: TInterval[];\n    private index: number;\n\n    constructor(\n        collection: IntervalCollection<TInterval>,\n        iteratesForward: boolean = true,\n        start?: number,\n        end?: number) {\n        this.results = [];\n        this.index = 0;\n\n        collection.gatherIterationResults(this.results, iteratesForward, start, end);\n    }\n\n    public next() {\n        let _value: TInterval | undefined;\n        let _done: boolean = true;\n\n        if (this.index < this.results.length) {\n            _value = this.results[this.index++];\n            _done = false;\n        }\n\n        return {\n            value: _value,\n            done: _done,\n        };\n    }\n}\n\nexport class IntervalCollection<TInterval extends ISerializableInterval> {\n    private savedSerializedIntervals?: ISerializedInterval[];\n    private view: IntervalCollectionView<TInterval>;\n\n    public get attached(): boolean {\n        return !!this.view;\n    }\n\n    constructor(private readonly helpers: IIntervalHelpers<TInterval>, private readonly requiresClient: boolean,\n        private readonly emitter: IValueOpEmitter,\n        serializedIntervals: ISerializedInterval[]) {\n        this.savedSerializedIntervals = serializedIntervals;\n    }\n\n    public attachGraph(client: MergeTree.Client, label: string) {\n        if (this.view) {\n            throw new Error(\"Only supports one Sequence attach\");\n        }\n\n        if ((client === undefined) && (this.requiresClient)) {\n            throw new Error(\"Client required for this collection\");\n        }\n\n        this.view = new IntervalCollectionView<TInterval>(client,\n            this.savedSerializedIntervals, label, this.helpers, this.emitter);\n        this.savedSerializedIntervals = undefined;\n    }\n\n    public add(\n        startPosition: number,\n        endPosition: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet,\n    ) {\n        if (!this.view) {\n            throw new Error(\"attach must be called prior to adding intervals\");\n        }\n\n        return this.view.add(startPosition, endPosition, intervalType, props);\n    }\n\n    public delete(\n        startPosition: number,\n        endPosition: number,\n    ) {\n        if (!this.view) {\n            throw new Error(\"attach must be called prior to deleting intervals\");\n        }\n\n        this.view.delete(startPosition, endPosition);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void {\n        this.view.addConflictResolver(conflictResolver);\n    }\n\n    public async getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollectionView<TInterval>> {\n        if (!this.view) {\n            return Promise.reject(new Error(\"attachSequence must be called prior to retrieving the view\"));\n        }\n\n        // Attach custom deserializers if specified\n        if (onDeserialize) {\n            this.view.attachDeserializer(onDeserialize);\n        }\n\n        return this.view;\n    }\n\n    public addInternal(\n        serializedInterval: ISerializedInterval,\n        local: boolean,\n        op: ISequencedDocumentMessage) {\n        if (!this.view) {\n            throw new Error(\"attachSequence must be called\");\n        }\n\n        return this.view.addInternal(serializedInterval, local, op);\n    }\n\n    public deleteInterval(\n        serializedInterval: ISerializedInterval,\n        local: boolean,\n        op: ISequencedDocumentMessage): void {\n        if (!this.view) {\n            throw new Error(\"attach must be called prior to deleting intervals\");\n        }\n        this.view.deleteInterval(serializedInterval, local, op);\n    }\n\n    public serializeInternal() {\n        if (!this.view) {\n            throw new Error(\"attachSequence must be called\");\n        }\n\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return this.view.serializeInternal();\n    }\n\n    public [Symbol.iterator](): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this);\n        return iterator;\n    }\n\n    public CreateForwardIteratorWithStartPosition(startPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, true, startPosition);\n        return iterator;\n    }\n\n    public CreateBackwardIteratorWithStartPosition(startPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, false, startPosition);\n        return iterator;\n    }\n\n    public CreateForwardIteratorWithEndPosition(endPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, true, undefined, endPosition);\n        return iterator;\n    }\n\n    public CreateBackwardIteratorWithEndPosition(endPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, false, undefined, endPosition);\n        return iterator;\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        if (!this.view) {\n            return;\n        }\n\n        this.view.gatherIterationResults(results, iteratesForward, start, end);\n    }\n}\n"]}
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* Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\n/* eslint-disable no-bitwise */\n\nimport { EventEmitter } from \"events\";\nimport * as MergeTree from \"@fluidframework/merge-tree\";\nimport { ISequencedDocumentMessage } from \"@fluidframework/protocol-definitions\";\nimport { v4 as uuid } from \"uuid\";\nimport { IValueFactory, IValueOpEmitter, IValueOperation, IValueType } from \"./mapKernelInterfaces\";\n\nexport const reservedIntervalIdKey = \"intervalId\";\n\nexport interface ISerializedInterval {\n    sequenceNumber: number;\n    start: number;\n    end: number;\n    intervalType: MergeTree.IntervalType;\n    properties?: MergeTree.PropertySet;\n}\n\nexport interface ISerializableInterval extends MergeTree.IInterval {\n    properties: MergeTree.PropertySet;\n    serialize(client: MergeTree.Client);\n    addProperties(props: MergeTree.PropertySet);\n}\n\nexport interface IIntervalHelpers<TInterval extends ISerializableInterval> {\n    compareEnds(a: TInterval, b: TInterval): number;\n    create(label: string, start: number, end: number,\n        client: MergeTree.Client, intervalType?: MergeTree.IntervalType): TInterval;\n}\n\nexport class Interval implements ISerializableInterval {\n    public properties: MergeTree.PropertySet;\n    public auxProps: MergeTree.PropertySet[];\n    constructor(\n        public start: number,\n        public end: number,\n        props?: MergeTree.PropertySet) {\n        if (props) {\n            this.addProperties(props);\n        }\n    }\n\n    public getIntervalId(): string | undefined {\n        return this.properties?.[reservedIntervalIdKey]?.toString() as string | undefined;\n    }\n\n    public getAdditionalPropertySets() {\n        return this.auxProps;\n    }\n\n    public addPropertySet(props: MergeTree.PropertySet) {\n        if (this.auxProps === undefined) {\n            this.auxProps = [];\n        }\n        this.auxProps.push(props);\n    }\n\n    public serialize(client: MergeTree.Client) {\n        let seq = 0;\n        if (client) {\n            seq = client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            end: this.end,\n            intervalType: 0,\n            sequenceNumber: seq,\n            start: this.start,\n        };\n        if (this.properties) {\n            serializedInterval.properties = this.properties;\n        }\n        return serializedInterval;\n    }\n\n    public clone() {\n        return new Interval(this.start, this.end, this.properties);\n    }\n\n    public compare(b: Interval) {\n        const startResult = this.compareStart(b);\n        if (startResult === 0) {\n            return this.compareEnd(b);\n        } else {\n            return startResult;\n        }\n    }\n\n    public compareStart(b: Interval) {\n        return this.start - b.start;\n    }\n\n    public compareEnd(b: Interval) {\n        return this.end - b.end;\n    }\n\n    public overlaps(b: Interval) {\n        const result = (this.start < b.end) &&\n            (this.end >= b.start);\n        return result;\n    }\n\n    public union(b: Interval) {\n        return new Interval(Math.min(this.start, b.start),\n            Math.max(this.end, b.end), this.properties);\n    }\n\n    public getProperties() {\n        return this.properties;\n    }\n\n    public addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp) {\n        this.properties = MergeTree.addProperties(this.properties, newProps, op);\n    }\n}\n\nexport class SequenceInterval implements ISerializableInterval {\n    public properties: MergeTree.PropertySet;\n    private readonly checkMergeTree: MergeTree.MergeTree;\n\n    constructor(\n        public start: MergeTree.LocalReference,\n        public end: MergeTree.LocalReference,\n        public intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet) {\n        if (props) {\n            this.addProperties(props);\n        }\n    }\n\n    public serialize(client: MergeTree.Client) {\n        const startPosition = this.start.toPosition();\n        const endPosition = this.end.toPosition();\n        const serializedInterval: ISerializedInterval = {\n            end: endPosition,\n            intervalType: this.intervalType,\n            sequenceNumber: client.getCurrentSeq(),\n            start: startPosition,\n        };\n        if (this.properties) {\n            serializedInterval.properties = this.properties;\n        }\n        return serializedInterval;\n    }\n\n    public clone() {\n        return new SequenceInterval(this.start, this.end, this.intervalType);\n    }\n\n    public compare(b: SequenceInterval) {\n        const startResult = this.compareStart(b);\n        if (startResult === 0) {\n            return this.compareEnd(b);\n        } else {\n            return startResult;\n        }\n    }\n\n    public compareStart(b: SequenceInterval) {\n        return this.start.compare(b.start);\n    }\n\n    public compareEnd(b: SequenceInterval) {\n        return this.end.compare(b.end);\n    }\n\n    public overlaps(b: SequenceInterval) {\n        const result = (this.start.compare(b.end) < 0) &&\n            (this.end.compare(b.start) >= 0);\n        if (this.checkMergeTree) {\n            this.checkOverlaps(b, result);\n        }\n        return result;\n    }\n\n    public getIntervalId(): string | undefined {\n        return this.properties?.[reservedIntervalIdKey]?.toString() as string | undefined;\n    }\n\n    public union(b: SequenceInterval) {\n        return new SequenceInterval(this.start.min(b.start),\n            this.end.max(b.end), this.intervalType);\n    }\n\n    public addProperties(newProps: MergeTree.PropertySet, op?: MergeTree.ICombiningOp) {\n        this.properties = MergeTree.addProperties(this.properties, newProps, op);\n    }\n\n    public overlapsPos(bstart: number, bend: number) {\n        const startPos = this.start.toPosition();\n        const endPos = this.start.toPosition();\n        return (endPos > bstart) && (startPos < bend);\n    }\n\n    private checkOverlaps(b: SequenceInterval, result: boolean) {\n        const astart = this.start.toPosition();\n        const bstart = b.start.toPosition();\n        const aend = this.end.toPosition();\n        const bend = b.end.toPosition();\n        const checkResult = ((astart < bend) && (bstart < aend));\n        if (checkResult !== result) {\n            // eslint-disable-next-line max-len\n            console.log(`check mismatch: res ${result} ${this.start.segment === b.end.segment} ${b.start.segment === this.end.segment}`);\n            console.log(`as ${astart} ae ${aend} bs ${bstart} be ${bend}`);\n            console.log(`as ${MergeTree.ordinalToArray(this.start.segment.ordinal)}@${this.start.offset}`);\n            console.log(`ae ${MergeTree.ordinalToArray(this.end.segment.ordinal)}@${this.end.offset}`);\n            console.log(`bs ${MergeTree.ordinalToArray(b.start.segment.ordinal)}@${b.start.offset}`);\n            console.log(`be ${MergeTree.ordinalToArray(b.end.segment.ordinal)}@${b.end.offset}`);\n            console.log(this.checkMergeTree.nodeToString(b.start.segment.parent, \"\"));\n        }\n    }\n}\n\nfunction createPositionReference(\n    client: MergeTree.Client,\n    pos: number,\n    refType: MergeTree.ReferenceType): MergeTree.LocalReference {\n    const segoff = client.getContainingSegment(pos);\n    if (segoff && segoff.segment) {\n        const lref = new MergeTree.LocalReference(client, segoff.segment, segoff.offset, refType);\n        if (refType !== MergeTree.ReferenceType.Transient) {\n            client.addLocalReference(lref);\n        }\n        return lref;\n    }\n    return new MergeTree.LocalReference(client, undefined);\n}\n\nfunction createSequenceInterval(\n    label: string,\n    start: number,\n    end: number,\n    client: MergeTree.Client,\n    intervalType: MergeTree.IntervalType): SequenceInterval {\n    let beginRefType = MergeTree.ReferenceType.RangeBegin;\n    let endRefType = MergeTree.ReferenceType.RangeEnd;\n    if (intervalType === MergeTree.IntervalType.Nest) {\n        beginRefType = MergeTree.ReferenceType.NestBegin;\n        endRefType = MergeTree.ReferenceType.NestEnd;\n    } else if (intervalType === MergeTree.IntervalType.Transient) {\n        beginRefType = MergeTree.ReferenceType.Transient;\n        endRefType = MergeTree.ReferenceType.Transient;\n    }\n\n    // TODO: Should SlideOnRemove be the default behavior?\n    if (intervalType & MergeTree.IntervalType.SlideOnRemove) {\n        beginRefType |= MergeTree.ReferenceType.SlideOnRemove;\n        endRefType |= MergeTree.ReferenceType.SlideOnRemove;\n    }\n\n    const startLref = createPositionReference(client, start, beginRefType);\n    const endLref = createPositionReference(client, end, endRefType);\n    if (startLref && endLref) {\n        startLref.pairedRef = endLref;\n        endLref.pairedRef = startLref;\n        const rangeProp = {\n            [MergeTree.reservedRangeLabelsKey]: [label],\n        };\n        startLref.addProperties(rangeProp);\n        endLref.addProperties(rangeProp);\n\n        const ival = new SequenceInterval(startLref, endLref, intervalType, rangeProp);\n        return ival;\n    }\n}\n\nexport function defaultIntervalConflictResolver(a: Interval, b: Interval) {\n    a.addPropertySet(b.properties);\n    return a;\n}\n\nexport function createIntervalIndex(conflict?: MergeTree.IntervalConflictResolver<Interval>) {\n    const helpers: IIntervalHelpers<Interval> = {\n        compareEnds: compareIntervalEnds,\n        create: createInterval,\n    };\n    const lc = new LocalIntervalCollection<Interval>(undefined, \"\", helpers);\n    if (conflict) {\n        lc.addConflictResolver(conflict);\n    } else {\n        lc.addConflictResolver(defaultIntervalConflictResolver);\n    }\n    return lc;\n}\n\nexport class LocalIntervalCollection<TInterval extends ISerializableInterval> {\n    private readonly intervalTree = new MergeTree.IntervalTree<TInterval>();\n    private readonly endIntervalTree: MergeTree.RedBlackTree<TInterval, TInterval>;\n    private conflictResolver: MergeTree.IntervalConflictResolver<TInterval>;\n    private endConflictResolver: MergeTree.ConflictAction<TInterval, TInterval>;\n\n    constructor(\n        private readonly client: MergeTree.Client,\n        private readonly label: string,\n        private readonly helpers: IIntervalHelpers<TInterval>) {\n        this.endIntervalTree =\n            // eslint-disable-next-line @typescript-eslint/unbound-method\n            new MergeTree.RedBlackTree<TInterval, TInterval>(helpers.compareEnds);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>) {\n        this.conflictResolver = conflictResolver;\n        this.endConflictResolver =\n            (key: TInterval, currentKey: TInterval) => {\n                const ival = this.conflictResolver(key, currentKey);\n                return {\n                    data: ival,\n                    key: ival,\n                };\n            };\n    }\n\n    public map(fn: (interval: TInterval) => void) {\n        this.intervalTree.map(fn);\n    }\n\n    public createLegacyId(start: number, end: number): string {\n        // Create a non-unique ID based on start and end to be used on intervals that come from legacy clients\n        // without ID's.\n        return `${start}-${end}`;\n    }\n\n    public ensureSerializedId(serializedInterval: ISerializedInterval) {\n        if (serializedInterval.properties?.[reservedIntervalIdKey] === undefined) {\n            // An interval came over the wire without an ID, so create a non-unique one based on start/end.\n            // This will allow all clients to refer to this interval consistently.\n            serializedInterval.properties = MergeTree.addProperties(\n                serializedInterval.properties,\n                {\n                    [reservedIntervalIdKey]: this.createLegacyId(serializedInterval.start, serializedInterval.end),\n                },\n            );\n        }\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        if (this.intervalTree.intervals.isEmpty()) {\n            return;\n        }\n\n        if (start === undefined && end === undefined) {\n            // No start/end provided. Gather the whole tree in the specified order.\n            if (iteratesForward) {\n                this.intervalTree.map((interval: TInterval) => {\n                    results.push(interval);\n                });\n            }\n            else {\n                this.intervalTree.mapBackward((interval: TInterval) => {\n                    results.push(interval);\n                });\n            }\n        }\n        else {\n            const transientInterval: TInterval = this.helpers.create(\n                \"transient\",\n                start,\n                end,\n                this.client,\n                MergeTree.IntervalType.Transient,\n            );\n\n            if (start === undefined) {\n                // Only end position provided. Since the tree is not sorted by end position,\n                // walk the whole tree in the specified order, gathering intervals that match the end.\n                if (iteratesForward) {\n                    this.intervalTree.map((interval: TInterval) => {\n                        if (transientInterval.compareEnd(interval) === 0) {\n                            results.push(interval);\n                        }\n                    });\n                }\n                else {\n                    this.intervalTree.mapBackward((interval: TInterval) => {\n                        if (transientInterval.compareEnd(interval) === 0) {\n                            results.push(interval);\n                        }\n                    });\n                }\n            }\n            else {\n                // Start and (possibly) end provided. Walk the subtrees that may contain\n                // this start position.\n                const compareFn =\n                    end === undefined ?\n                        (node: MergeTree.IntervalNode<TInterval>) => {\n                            return transientInterval.compareStart(node.key);\n                        } :\n                        (node: MergeTree.IntervalNode<TInterval>) => {\n                            return transientInterval.compare(node.key);\n                        };\n                const continueLeftFn = (cmpResult: number) => cmpResult <= 0;\n                const continueRightFn = (cmpResult: number) => cmpResult >= 0;\n                const actionFn = (node: MergeTree.IntervalNode<TInterval>) => {\n                    results.push(node.key);\n                };\n\n                if (iteratesForward) {\n                    this.intervalTree.intervals.walkExactMatchesForward(\n                        compareFn, actionFn, continueLeftFn, continueRightFn,\n                    );\n                }\n                else {\n                    this.intervalTree.intervals.walkExactMatchesBackward(\n                        compareFn, actionFn, continueLeftFn, continueRightFn,\n                    );\n                }\n            }\n        }\n    }\n\n    public findOverlappingIntervals(startPosition: number, endPosition: number) {\n        if (!this.intervalTree.intervals.isEmpty()) {\n            const transientInterval =\n                this.helpers.create(\n                    \"transient\",\n                    startPosition,\n                    endPosition,\n                    this.client,\n                    MergeTree.IntervalType.Transient);\n\n            const overlappingIntervalNodes = this.intervalTree.match(transientInterval);\n            return overlappingIntervalNodes.map((node) => node.key);\n        } else {\n            return [];\n        }\n    }\n\n    public previousInterval(pos: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", pos, pos, this.client, MergeTree.IntervalType.Transient);\n        const rbNode = this.endIntervalTree.floor(transientInterval);\n        if (rbNode) {\n            return rbNode.data;\n        }\n    }\n\n    public nextInterval(pos: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", pos, pos, this.client, MergeTree.IntervalType.Transient);\n        const rbNode = this.endIntervalTree.ceil(transientInterval);\n        if (rbNode) {\n            return rbNode.data;\n        }\n    }\n\n    public removeInterval(startPosition: number, endPosition: number) {\n        const transientInterval = this.helpers.create(\n            \"transient\", startPosition, endPosition, this.client, MergeTree.IntervalType.Transient);\n        this.intervalTree.remove(transientInterval);\n        this.endIntervalTree.remove(transientInterval);\n        return transientInterval;\n    }\n\n    public createInterval(start: number, end: number, intervalType: MergeTree.IntervalType) {\n        return this.helpers.create(this.label, start, end, this.client, intervalType);\n    }\n\n    // TODO: remove interval, handle duplicate intervals\n    public addInterval(\n        start: number,\n        end: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet) {\n        const interval: TInterval = this.createInterval(start, end, intervalType);\n        if (interval) {\n            interval.addProperties(props);\n            if (this.label && (this.label.length > 0)) {\n                interval.properties[MergeTree.reservedRangeLabelsKey] = [this.label];\n            }\n            if (interval.properties[reservedIntervalIdKey] === undefined) {\n                interval.properties[reservedIntervalIdKey] = uuid();\n            }\n            this.intervalTree.put(interval, this.conflictResolver);\n            this.endIntervalTree.put(interval, interval, this.endConflictResolver);\n        }\n        return interval;\n    }\n\n    public serialize() {\n        const client = this.client;\n        const intervals = this.intervalTree.intervals.keys();\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return intervals.map((interval) => interval.serialize(client));\n    }\n}\n\nconst compareSequenceIntervalEnds = (a: SequenceInterval, b: SequenceInterval): number => a.end.compare(b.end);\n\nclass SequenceIntervalCollectionFactory\n    implements IValueFactory<IntervalCollection<SequenceInterval>> {\n    public load(\n        emitter: IValueOpEmitter,\n        raw: ISerializedInterval[] = [],\n    ): IntervalCollection<SequenceInterval> {\n        const helpers: IIntervalHelpers<SequenceInterval> = {\n            compareEnds: compareSequenceIntervalEnds,\n            create: createSequenceInterval,\n        };\n        return new IntervalCollection<SequenceInterval>(helpers, true, emitter, raw);\n    }\n\n    public store(value: IntervalCollection<SequenceInterval>): ISerializedInterval[] {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return value.serializeInternal();\n    }\n}\n\nexport class SequenceIntervalCollectionValueType\n    implements IValueType<IntervalCollection<SequenceInterval>> {\n    public static Name = \"sharedStringIntervalCollection\";\n\n    public get name(): string {\n        return SequenceIntervalCollectionValueType.Name;\n    }\n\n    public get factory(): IValueFactory<IntervalCollection<SequenceInterval>> {\n        return SequenceIntervalCollectionValueType._factory;\n    }\n\n    public get ops(): Map<string, IValueOperation<IntervalCollection<SequenceInterval>>> {\n        return SequenceIntervalCollectionValueType._ops;\n    }\n\n    private static readonly _factory: IValueFactory<IntervalCollection<SequenceInterval>> =\n        new SequenceIntervalCollectionFactory();\n\n    private static readonly _ops: Map<string, IValueOperation<IntervalCollection<SequenceInterval>>> =\n        new Map<string, IValueOperation<IntervalCollection<SequenceInterval>>>(\n            [[\n                \"add\",\n                {\n                    process: (value, params, local, op) => {\n                        // Local ops were applied when the message was created\n                        if (local) {\n                            return;\n                        }\n\n                        value.addInternal(params, local, op);\n                    },\n                },\n            ],\n            [\n                \"delete\",\n                {\n                    process: (value, params, local, op) => {\n                        if (local) {\n                            return;\n                        }\n                        value.deleteInterval(params, local, op);\n                    },\n                },\n            ]]);\n}\n\nconst compareIntervalEnds = (a: Interval, b: Interval) => a.end - b.end;\n\nfunction createInterval(label: string, start: number, end: number, client: MergeTree.Client): Interval {\n    let rangeProp: MergeTree.PropertySet;\n    if (label && (label.length > 0)) {\n        rangeProp = {\n            [MergeTree.reservedRangeLabelsKey]: [label],\n        };\n    }\n    return new Interval(start, end, rangeProp);\n}\n\nclass IntervalCollectionFactory\n    implements IValueFactory<IntervalCollection<Interval>> {\n    public load(emitter: IValueOpEmitter, raw: ISerializedInterval[] = []): IntervalCollection<Interval> {\n        const helpers: IIntervalHelpers<Interval> = {\n            compareEnds: compareIntervalEnds,\n            create: createInterval,\n        };\n        const collection = new IntervalCollection<Interval>(helpers, false, emitter, raw);\n        collection.attachGraph(undefined, \"\");\n        return collection;\n    }\n\n    public store(value: IntervalCollection<Interval>): ISerializedInterval[] {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return value.serializeInternal();\n    }\n}\n\nexport class IntervalCollectionValueType\n    implements IValueType<IntervalCollection<Interval>> {\n    public static Name = \"sharedIntervalCollection\";\n\n    public get name(): string {\n        return IntervalCollectionValueType.Name;\n    }\n\n    public get factory(): IValueFactory<IntervalCollection<Interval>> {\n        return IntervalCollectionValueType._factory;\n    }\n\n    public get ops(): Map<string, IValueOperation<IntervalCollection<Interval>>> {\n        return IntervalCollectionValueType._ops;\n    }\n\n    private static readonly _factory: IValueFactory<IntervalCollection<Interval>> =\n        new IntervalCollectionFactory();\n    private static readonly _ops: Map<string, IValueOperation<IntervalCollection<Interval>>> =\n        new Map<string, IValueOperation<IntervalCollection<Interval>>>(\n            [[\n                \"add\",\n                {\n                    process: (value, params, local, op) => {\n                        // Local ops were applied when the message was created\n                        if (local) {\n                            return;\n                        }\n\n                        value.addInternal(params, local, op);\n                    },\n                },\n            ],\n            [\n                \"delete\",\n                {\n                    process: (value, params, local, op) => {\n                        if (local) {\n                            return;\n                        }\n                        value.deleteInterval(params, local, op);\n                    },\n                },\n            ]]);\n}\n\nexport type DeserializeCallback = (properties: MergeTree.PropertySet) => void;\n\nexport class IntervalCollectionIterator<TInterval extends ISerializableInterval> {\n    private readonly results: TInterval[];\n    private index: number;\n\n    constructor(\n        collection: IntervalCollection<TInterval>,\n        iteratesForward: boolean = true,\n        start?: number,\n        end?: number) {\n        this.results = [];\n        this.index = 0;\n\n        collection.gatherIterationResults(this.results, iteratesForward, start, end);\n    }\n\n    public next() {\n        let _value: TInterval | undefined;\n        let _done: boolean = true;\n\n        if (this.index < this.results.length) {\n            _value = this.results[this.index++];\n            _done = false;\n        }\n\n        return {\n            value: _value,\n            done: _done,\n        };\n    }\n}\n\nexport class IntervalCollection<TInterval extends ISerializableInterval> extends EventEmitter {\n    private savedSerializedIntervals?: ISerializedInterval[];\n    private localCollection: LocalIntervalCollection<TInterval>;\n    private onDeserialize: DeserializeCallback;\n    private client: MergeTree.Client;\n\n    public get attached(): boolean {\n        // return !!this.view;\n        return !!this.localCollection;\n    }\n\n    constructor(private readonly helpers: IIntervalHelpers<TInterval>, private readonly requiresClient: boolean,\n        private readonly emitter: IValueOpEmitter,\n        serializedIntervals: ISerializedInterval[]) {\n        super();\n        this.savedSerializedIntervals = serializedIntervals;\n    }\n\n    public attachGraph(client: MergeTree.Client, label: string) {\n        if (this.attached) {\n            throw new Error(\"Only supports one Sequence attach\");\n        }\n\n        if ((client === undefined) && (this.requiresClient)) {\n            throw new Error(\"Client required for this collection\");\n        }\n\n        // Instantiate the local interval collection based on the saved intervals\n        this.client = client;\n        this.localCollection = new LocalIntervalCollection<TInterval>(client, label, this.helpers);\n        if (this.savedSerializedIntervals) {\n            for (const serializedInterval of this.savedSerializedIntervals) {\n                this.localCollection.ensureSerializedId(serializedInterval);\n                this.localCollection.addInterval(\n                    serializedInterval.start,\n                    serializedInterval.end,\n                    serializedInterval.intervalType,\n                    serializedInterval.properties);\n            }\n        }\n        this.savedSerializedIntervals = undefined;\n    }\n\n    public add(\n        start: number,\n        end: number,\n        intervalType: MergeTree.IntervalType,\n        props?: MergeTree.PropertySet,\n    ) {\n        if (!this.attached) {\n            throw new Error(\"attach must be called prior to adding intervals\");\n        }\n\n        let seq = 0;\n        if (this.client) {\n            seq = this.client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            end,\n            intervalType,\n            properties: props,\n            sequenceNumber: seq,\n            start,\n        };\n\n        return this.addInternal(serializedInterval, true, undefined);\n    }\n\n    public delete(\n        start: number,\n        end: number,\n    ) {\n        let sequenceNumber = 0;\n        if (!this.attached) {\n            throw new Error(\"attach must be called prior to deleting intervals\");\n        }\n\n        if (this.client) {\n            sequenceNumber = this.client.getCurrentSeq();\n        }\n\n        const serializedInterval: ISerializedInterval = {\n            start,\n            end,\n            sequenceNumber,\n            intervalType: MergeTree.IntervalType.Transient,\n        };\n\n        this.deleteInterval(serializedInterval, true, undefined);\n    }\n\n    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void {\n        if (!this.attached) {\n            throw new Error(\"attachSequence must be called\");\n        }\n        this.localCollection.addConflictResolver(conflictResolver);\n    }\n\n    public attachDeserializer(onDeserialize: DeserializeCallback): void {\n        this.attachDeserializerCore(onDeserialize);\n    }\n\n    private attachDeserializerCore(onDeserialize?: DeserializeCallback): void {\n        // If no deserializer is specified can skip all processing work\n        if (!onDeserialize) {\n            return;\n        }\n\n        // Start by storing the callbacks so that any subsequent modifications make use of them\n        this.onDeserialize = onDeserialize;\n\n        // Trigger the async prepare work across all values in the collection\n        this.localCollection.map((interval) => {\n            this.onDeserialize(interval);\n        });\n    }\n\n    /**\n     * @deprecated - IntervalCollectionView has been removed. Please refer to IntervalCollection directly.\n     */\n    public async getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollection<TInterval>> {\n        if (!this.attached) {\n            return Promise.reject(new Error(\"attachSequence must be called prior to retrieving the view\"));\n        }\n\n        // Attach custom deserializers if specified\n        if (onDeserialize) {\n            this.attachDeserializer(onDeserialize);\n        }\n\n        return this;\n    }\n\n    public addInternal(\n        serializedInterval: ISerializedInterval,\n        local: boolean,\n        op: ISequencedDocumentMessage) {\n        if (!this.attached) {\n            throw new Error(\"attachSequence must be called\");\n        }\n\n        if (!local) {\n            this.localCollection.ensureSerializedId(serializedInterval);\n        }\n\n        const interval = this.localCollection.addInterval(\n            serializedInterval.start,\n            serializedInterval.end,\n            serializedInterval.intervalType,\n            serializedInterval.properties);\n\n        if (interval) {\n            // Local ops get submitted to the server. Remote ops have the deserializer run.\n            if (local) {\n                this.emitter.emit(\"add\", undefined, serializedInterval);\n            } else {\n                if (this.onDeserialize) {\n                    this.onDeserialize(interval);\n                }\n            }\n        }\n\n        this.emit(\"addInterval\", interval, local, op);\n\n        return interval;\n    }\n\n    public deleteInterval(\n        serializedInterval: ISerializedInterval,\n        local: boolean,\n        op: ISequencedDocumentMessage): void {\n        if (!this.attached) {\n            throw new Error(\"attach must be called prior to deleting intervals\");\n        }\n\n        const interval = this.localCollection.removeInterval(serializedInterval.start, serializedInterval.end);\n\n        if (interval) {\n            // Local ops get submitted to the server. Remote ops have the deserializer run.\n            if (local) {\n                this.emitter.emit(\"delete\", undefined, serializedInterval);\n            } else {\n                if (this.onDeserialize) {\n                    this.onDeserialize(interval);\n                }\n            }\n        }\n\n        this.emit(\"deleteInterval\", interval, local, op);\n    }\n\n    public serializeInternal() {\n        if (!this.attached) {\n            throw new Error(\"attachSequence must be called\");\n        }\n\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n        return this.localCollection.serialize();\n    }\n\n    public [Symbol.iterator](): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this);\n        return iterator;\n    }\n\n    public CreateForwardIteratorWithStartPosition(startPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, true, startPosition);\n        return iterator;\n    }\n\n    public CreateBackwardIteratorWithStartPosition(startPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, false, startPosition);\n        return iterator;\n    }\n\n    public CreateForwardIteratorWithEndPosition(endPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, true, undefined, endPosition);\n        return iterator;\n    }\n\n    public CreateBackwardIteratorWithEndPosition(endPosition: number): IntervalCollectionIterator<TInterval> {\n        const iterator = new IntervalCollectionIterator<TInterval>(this, false, undefined, endPosition);\n        return iterator;\n    }\n\n    public gatherIterationResults(\n        results: TInterval[],\n        iteratesForward: boolean,\n        start?: number,\n        end?: number) {\n        if (!this.attached) {\n            return;\n        }\n\n        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);\n    }\n\n    public findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[] {\n        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);\n    }\n\n    public map(fn: (interval: TInterval) => void) {\n        this.localCollection.map(fn);\n    }\n\n    public previousInterval(pos: number): TInterval {\n        return this.localCollection.previousInterval(pos);\n    }\n\n    public nextInterval(pos: number): TInterval {\n        return this.localCollection.nextInterval(pos);\n    }\n\n    public on(\n        event: \"addInterval\" | \"deleteInterval\",\n        listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this {\n        return super.on(event, listener);\n    }\n}\n"]}

lib/packageVersion.d.ts

@@ -8,3 +8,3 @@ /*!
 export declare const pkgName = "@fluidframework/sequence";
-export declare const pkgVersion = "0.42.2";
+export declare const pkgVersion = "0.43.0";
 //# sourceMappingURL=packageVersion.d.ts.map

lib/packageVersion.js

@@ -8,3 +8,3 @@ /*!
 export const pkgName = "@fluidframework/sequence";
-export const pkgVersion = "0.42.2";
+export const pkgVersion = "0.43.0";
 //# sourceMappingURL=packageVersion.js.map

lib/packageVersion.js.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"packageVersion.js","sourceRoot":"","sources":["../src/packageVersion.ts"],"names":[],"mappings":"AAAA;;;;;GAKG;AAEH,MAAM,CAAC,MAAM,OAAO,GAAG,0BAA0B,CAAC;AAClD,MAAM,CAAC,MAAM,UAAU,GAAG,QAAQ,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n *\n * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY\n */\n\nexport const pkgName = \"@fluidframework/sequence\";\nexport const pkgVersion = \"0.42.2\";\n"]}
+{"version":3,"file":"packageVersion.js","sourceRoot":"","sources":["../src/packageVersion.ts"],"names":[],"mappings":"AAAA;;;;;GAKG;AAEH,MAAM,CAAC,MAAM,OAAO,GAAG,0BAA0B,CAAC;AAClD,MAAM,CAAC,MAAM,UAAU,GAAG,QAAQ,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n *\n * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY\n */\n\nexport const pkgName = \"@fluidframework/sequence\";\nexport const pkgVersion = \"0.43.0\";\n"]}

package.json

 {
   "name": "@fluidframework/sequence",
-  "version": "0.42.2",
+  "version": "0.43.0",
   "description": "Distributed sequence",
@@ -62,23 +62,22 @@ "homepage": "https://fluidframework.com",
     "@fluidframework/common-utils": "^0.31.0",
-    "@fluidframework/core-interfaces": "^0.39.0",
-    "@fluidframework/datastore-definitions": "^0.42.2",
-    "@fluidframework/merge-tree": "^0.42.2",
+    "@fluidframework/core-interfaces": "^0.39.5",
+    "@fluidframework/datastore-definitions": "^0.43.0",
+    "@fluidframework/merge-tree": "^0.43.0",
     "@fluidframework/protocol-definitions": "^0.1024.0",
-    "@fluidframework/runtime-definitions": "^0.42.2",
-    "@fluidframework/runtime-utils": "^0.42.2",
-    "@fluidframework/shared-object-base": "^0.42.2",
-    "@fluidframework/telemetry-utils": "^0.42.2",
-    "assert": "^2.0.0",
-    "debug": "^4.1.1"
+    "@fluidframework/runtime-definitions": "^0.43.0",
+    "@fluidframework/runtime-utils": "^0.43.0",
+    "@fluidframework/shared-object-base": "^0.43.0",
+    "@fluidframework/telemetry-utils": "^0.43.0",
+    "debug": "^4.1.1",
+    "uuid": "^8.3.1"
   },
   "devDependencies": {
-    "@fluid-internal/test-dds-utils": "^0.42.2",
+    "@fluid-internal/test-dds-utils": "^0.43.0",
     "@fluidframework/build-common": "^0.22.0",
     "@fluidframework/eslint-config-fluid": "^0.23.0",
     "@fluidframework/gitresources": "^0.1027.0",
-    "@fluidframework/mocha-test-setup": "^0.42.2",
+    "@fluidframework/mocha-test-setup": "^0.43.0",
     "@fluidframework/server-services-client": "^0.1027.0",
-    "@fluidframework/test-runtime-utils": "^0.42.2",
+    "@fluidframework/test-runtime-utils": "^0.43.0",
     "@microsoft/api-extractor": "^7.16.1",
-    "@types/assert": "^1.5.2",
     "@types/debug": "^4.1.5",
@@ -85,0 +84,0 @@ "@types/diff": "^3.5.1",

src/index.ts

@@ -14,3 +14,2 @@ /*!
     IntervalCollectionIterator,
-    IntervalCollectionView,
     SequenceInterval,
@@ -17,0 +16,0 @@ } from "./intervalCollection";

src/intervalCollection.ts

@@ -11,5 +11,7 @@ /*!
 import { ISequencedDocumentMessage } from "@fluidframework/protocol-definitions";
-
+import { v4 as uuid } from "uuid";
 import { IValueFactory, IValueOpEmitter, IValueOperation, IValueType } from "./mapKernelInterfaces";
 
+export const reservedIntervalIdKey = "intervalId";
+
 export interface ISerializedInterval {
@@ -47,2 +49,6 @@ sequenceNumber: number;
 
+    public getIntervalId(): string | undefined {
+        return this.properties?.[reservedIntervalIdKey]?.toString() as string | undefined;
+    }
+
     public getAdditionalPropertySets() {
@@ -177,2 +183,6 @@ return this.auxProps;
 
+    public getIntervalId(): string | undefined {
+        return this.properties?.[reservedIntervalIdKey]?.toString() as string | undefined;
+    }
+
     public union(b: SequenceInterval) {
@@ -315,2 +325,21 @@ return new SequenceInterval(this.start.min(b.start),
 
+    public createLegacyId(start: number, end: number): string {
+        // Create a non-unique ID based on start and end to be used on intervals that come from legacy clients
+        // without ID's.
+        return `${start}-${end}`;
+    }
+
+    public ensureSerializedId(serializedInterval: ISerializedInterval) {
+        if (serializedInterval.properties?.[reservedIntervalIdKey] === undefined) {
+            // An interval came over the wire without an ID, so create a non-unique one based on start/end.
+            // This will allow all clients to refer to this interval consistently.
+            serializedInterval.properties = MergeTree.addProperties(
+                serializedInterval.properties,
+                {
+                    [reservedIntervalIdKey]: this.createLegacyId(serializedInterval.start, serializedInterval.end),
+                },
+            );
+        }
+    }
+
     public gatherIterationResults(
@@ -449,3 +478,3 @@ results: TInterval[],
         props?: MergeTree.PropertySet) {
-        const interval = this.createInterval(start, end, intervalType);
+        const interval: TInterval = this.createInterval(start, end, intervalType);
         if (interval) {
@@ -456,2 +485,5 @@ interval.addProperties(props);
             }
+            if (interval.properties[reservedIntervalIdKey] === undefined) {
+                interval.properties[reservedIntervalIdKey] = uuid();
+            }
             this.intervalTree.put(interval, this.conflictResolver);
@@ -617,63 +649,74 @@ this.endIntervalTree.put(interval, interval, this.endConflictResolver);
 
-export class IntervalCollectionView<TInterval extends ISerializableInterval> extends EventEmitter {
-    private readonly localCollection: LocalIntervalCollection<TInterval>;
-    private onDeserialize: DeserializeCallback;
+export class IntervalCollectionIterator<TInterval extends ISerializableInterval> {
+    private readonly results: TInterval[];
+    private index: number;
 
     constructor(
-        private readonly client: MergeTree.Client,
-        savedSerializedIntervals: ISerializedInterval[],
-        label: string,
-        helpers: IIntervalHelpers<TInterval>,
-        private readonly emitter: IValueOpEmitter) {
-        super();
+        collection: IntervalCollection<TInterval>,
+        iteratesForward: boolean = true,
+        start?: number,
+        end?: number) {
+        this.results = [];
+        this.index = 0;
 
-        // Instantiate the local interval collection based on the saved intervals
-        this.localCollection = new LocalIntervalCollection<TInterval>(client, label, helpers);
-        if (savedSerializedIntervals) {
-            for (const serializedInterval of savedSerializedIntervals) {
-                this.localCollection.addInterval(
-                    serializedInterval.start,
-                    serializedInterval.end,
-                    serializedInterval.intervalType,
-                    serializedInterval.properties);
-            }
-        }
+        collection.gatherIterationResults(this.results, iteratesForward, start, end);
     }
 
-    public attachDeserializer(onDeserialize: DeserializeCallback): void {
-        this.attachDeserializerCore(onDeserialize);
-    }
+    public next() {
+        let _value: TInterval | undefined;
+        let _done: boolean = true;
 
-    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void {
-        this.localCollection.addConflictResolver(conflictResolver);
-    }
+        if (this.index < this.results.length) {
+            _value = this.results[this.index++];
+            _done = false;
+        }
 
-    public findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[] {
-        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);
+        return {
+            value: _value,
+            done: _done,
+        };
     }
+}
 
-    public map(fn: (interval: TInterval) => void) {
-        this.localCollection.map(fn);
-    }
+export class IntervalCollection<TInterval extends ISerializableInterval> extends EventEmitter {
+    private savedSerializedIntervals?: ISerializedInterval[];
+    private localCollection: LocalIntervalCollection<TInterval>;
+    private onDeserialize: DeserializeCallback;
+    private client: MergeTree.Client;
 
-    public gatherIterationResults(
-        results: TInterval[],
-        iteratesForward: boolean,
-        start?: number,
-        end?: number) {
-        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);
+    public get attached(): boolean {
+        // return !!this.view;
+        return !!this.localCollection;
     }
 
-    public previousInterval(pos: number): TInterval {
-        return this.localCollection.previousInterval(pos);
+    constructor(private readonly helpers: IIntervalHelpers<TInterval>, private readonly requiresClient: boolean,
+        private readonly emitter: IValueOpEmitter,
+        serializedIntervals: ISerializedInterval[]) {
+        super();
+        this.savedSerializedIntervals = serializedIntervals;
     }
 
-    public nextInterval(pos: number): TInterval {
-        return this.localCollection.nextInterval(pos);
-    }
+    public attachGraph(client: MergeTree.Client, label: string) {
+        if (this.attached) {
+            throw new Error("Only supports one Sequence attach");
+        }
 
-    public on(
-        event: "addInterval" | "deleteInterval",
-        listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this {
-        return super.on(event, listener);
+        if ((client === undefined) && (this.requiresClient)) {
+            throw new Error("Client required for this collection");
+        }
+
+        // Instantiate the local interval collection based on the saved intervals
+        this.client = client;
+        this.localCollection = new LocalIntervalCollection<TInterval>(client, label, this.helpers);
+        if (this.savedSerializedIntervals) {
+            for (const serializedInterval of this.savedSerializedIntervals) {
+                this.localCollection.ensureSerializedId(serializedInterval);
+                this.localCollection.addInterval(
+                    serializedInterval.start,
+                    serializedInterval.end,
+                    serializedInterval.intervalType,
+                    serializedInterval.properties);
+            }
+        }
+        this.savedSerializedIntervals = undefined;
     }
@@ -687,2 +730,6 @@
     ) {
+        if (!this.attached) {
+            throw new Error("attach must be called prior to adding intervals");
+        }
+
         let seq = 0;
@@ -706,4 +753,9 @@ if (this.client) {
         start: number,
-        end: number) {
+        end: number,
+    ) {
         let sequenceNumber = 0;
+        if (!this.attached) {
+            throw new Error("attach must be called prior to deleting intervals");
+        }
+
         if (this.client) {
@@ -723,50 +775,13 @@ sequenceNumber = this.client.getCurrentSeq();
 
-    // TODO: error cases
-    public addInternal(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) {
-        const interval = this.localCollection.addInterval(
-            serializedInterval.start,
-            serializedInterval.end,
-            serializedInterval.intervalType,
-            serializedInterval.properties);
-
-        if (interval) {
-            // Local ops get submitted to the server. Remote ops have the deserializer run.
-            if (local) {
-                this.emitter.emit("add", undefined, serializedInterval);
-            } else {
-                if (this.onDeserialize) {
-                    this.onDeserialize(interval);
-                }
-            }
+    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void {
+        if (!this.attached) {
+            throw new Error("attachSequence must be called");
         }
-
-        this.emit("addInterval", interval, local, op);
-
-        return interval;
+        this.localCollection.addConflictResolver(conflictResolver);
     }
 
-    public deleteInterval(serializedInterval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) {
-        const interval = this.localCollection.removeInterval(serializedInterval.start, serializedInterval.end);
-
-        if (interval) {
-            // Local ops get submitted to the server. Remote ops have the deserializer run.
-            if (local) {
-                this.emitter.emit("delete", undefined, serializedInterval);
-            } else {
-                if (this.onDeserialize) {
-                    this.onDeserialize(interval);
-                }
-            }
-        }
-
-        this.emit("deleteInterval", interval, local, op);
-
-        return this;
+    public attachDeserializer(onDeserialize: DeserializeCallback): void {
+        this.attachDeserializerCore(onDeserialize);
     }
 
-    public serializeInternal() {
-        // eslint-disable-next-line @typescript-eslint/no-unsafe-return
-        return this.localCollection.serialize();
-    }
-
     private attachDeserializerCore(onDeserialize?: DeserializeCallback): void {
@@ -786,93 +801,8 @@ // If no deserializer is specified can skip all processing work
     }
-}
 
-export class IntervalCollectionIterator<TInterval extends ISerializableInterval> {
-    private readonly results: TInterval[];
-    private index: number;
-
-    constructor(
-        collection: IntervalCollection<TInterval>,
-        iteratesForward: boolean = true,
-        start?: number,
-        end?: number) {
-        this.results = [];
-        this.index = 0;
-
-        collection.gatherIterationResults(this.results, iteratesForward, start, end);
-    }
-
-    public next() {
-        let _value: TInterval | undefined;
-        let _done: boolean = true;
-
-        if (this.index < this.results.length) {
-            _value = this.results[this.index++];
-            _done = false;
-        }
-
-        return {
-            value: _value,
-            done: _done,
-        };
-    }
-}
-
-export class IntervalCollection<TInterval extends ISerializableInterval> {
-    private savedSerializedIntervals?: ISerializedInterval[];
-    private view: IntervalCollectionView<TInterval>;
-
-    public get attached(): boolean {
-        return !!this.view;
-    }
-
-    constructor(private readonly helpers: IIntervalHelpers<TInterval>, private readonly requiresClient: boolean,
-        private readonly emitter: IValueOpEmitter,
-        serializedIntervals: ISerializedInterval[]) {
-        this.savedSerializedIntervals = serializedIntervals;
-    }
-
-    public attachGraph(client: MergeTree.Client, label: string) {
-        if (this.view) {
-            throw new Error("Only supports one Sequence attach");
-        }
-
-        if ((client === undefined) && (this.requiresClient)) {
-            throw new Error("Client required for this collection");
-        }
-
-        this.view = new IntervalCollectionView<TInterval>(client,
-            this.savedSerializedIntervals, label, this.helpers, this.emitter);
-        this.savedSerializedIntervals = undefined;
-    }
-
-    public add(
-        startPosition: number,
-        endPosition: number,
-        intervalType: MergeTree.IntervalType,
-        props?: MergeTree.PropertySet,
-    ) {
-        if (!this.view) {
-            throw new Error("attach must be called prior to adding intervals");
-        }
-
-        return this.view.add(startPosition, endPosition, intervalType, props);
-    }
-
-    public delete(
-        startPosition: number,
-        endPosition: number,
-    ) {
-        if (!this.view) {
-            throw new Error("attach must be called prior to deleting intervals");
-        }
-
-        this.view.delete(startPosition, endPosition);
-    }
-
-    public addConflictResolver(conflictResolver: MergeTree.IntervalConflictResolver<TInterval>): void {
-        this.view.addConflictResolver(conflictResolver);
-    }
-
-    public async getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollectionView<TInterval>> {
-        if (!this.view) {
+    /**
+     * @deprecated - IntervalCollectionView has been removed. Please refer to IntervalCollection directly.
+     */
+    public async getView(onDeserialize?: DeserializeCallback): Promise<IntervalCollection<TInterval>> {
+        if (!this.attached) {
             return Promise.reject(new Error("attachSequence must be called prior to retrieving the view"));
@@ -883,6 +813,6 @@ }
         if (onDeserialize) {
-            this.view.attachDeserializer(onDeserialize);
+            this.attachDeserializer(onDeserialize);
         }
 
-        return this.view;
+        return this;
     }
@@ -894,7 +824,30 @@
         op: ISequencedDocumentMessage) {
-        if (!this.view) {
+        if (!this.attached) {
             throw new Error("attachSequence must be called");
         }
 
-        return this.view.addInternal(serializedInterval, local, op);
+        if (!local) {
+            this.localCollection.ensureSerializedId(serializedInterval);
+        }
+
+        const interval = this.localCollection.addInterval(
+            serializedInterval.start,
+            serializedInterval.end,
+            serializedInterval.intervalType,
+            serializedInterval.properties);
+
+        if (interval) {
+            // Local ops get submitted to the server. Remote ops have the deserializer run.
+            if (local) {
+                this.emitter.emit("add", undefined, serializedInterval);
+            } else {
+                if (this.onDeserialize) {
+                    this.onDeserialize(interval);
+                }
+            }
+        }
+
+        this.emit("addInterval", interval, local, op);
+
+        return interval;
     }
@@ -906,10 +859,24 @@
         op: ISequencedDocumentMessage): void {
-        if (!this.view) {
+        if (!this.attached) {
             throw new Error("attach must be called prior to deleting intervals");
         }
-        this.view.deleteInterval(serializedInterval, local, op);
+
+        const interval = this.localCollection.removeInterval(serializedInterval.start, serializedInterval.end);
+
+        if (interval) {
+            // Local ops get submitted to the server. Remote ops have the deserializer run.
+            if (local) {
+                this.emitter.emit("delete", undefined, serializedInterval);
+            } else {
+                if (this.onDeserialize) {
+                    this.onDeserialize(interval);
+                }
+            }
+        }
+
+        this.emit("deleteInterval", interval, local, op);
     }
 
     public serializeInternal() {
-        if (!this.view) {
+        if (!this.attached) {
             throw new Error("attachSequence must be called");
@@ -919,3 +886,3 @@ }
         // eslint-disable-next-line @typescript-eslint/no-unsafe-return
-        return this.view.serializeInternal();
+        return this.localCollection.serialize();
     }
@@ -953,8 +920,30 @@
         end?: number) {
-        if (!this.view) {
+        if (!this.attached) {
             return;
         }
 
-        this.view.gatherIterationResults(results, iteratesForward, start, end);
+        this.localCollection.gatherIterationResults(results, iteratesForward, start, end);
     }
+
+    public findOverlappingIntervals(startPosition: number, endPosition: number): TInterval[] {
+        return this.localCollection.findOverlappingIntervals(startPosition, endPosition);
+    }
+
+    public map(fn: (interval: TInterval) => void) {
+        this.localCollection.map(fn);
+    }
+
+    public previousInterval(pos: number): TInterval {
+        return this.localCollection.previousInterval(pos);
+    }
+
+    public nextInterval(pos: number): TInterval {
+        return this.localCollection.nextInterval(pos);
+    }
+
+    public on(
+        event: "addInterval" | "deleteInterval",
+        listener: (interval: ISerializedInterval, local: boolean, op: ISequencedDocumentMessage) => void): this {
+        return super.on(event, listener);
+    }
 }

src/packageVersion.ts

@@ -9,2 +9,2 @@ /*!
 export const pkgName = "@fluidframework/sequence";
-export const pkgVersion = "0.42.2";
+export const pkgVersion = "0.43.0";

New alerts

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

URL strings

Supply chain risk

Package contains fragments of external URLs or IP addresses, which the package may be accessing at runtime.

Found 1 instance in 1 package

Fixed alerts

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

URL strings

Supply chain risk

Package contains fragments of external URLs or IP addresses, which the package may be accessing at runtime.

Found 1 instance in 1 package

Improved metrics

Dev dependency count

32

-3.03%

Lines of code

13392

0.01%

Worsened metrics

Total package byte prevSize

1120748

-0.11%

Dependency changes

• + Added

  uuid@^8.3.1

• + Added

  @fluidframework/container-runtime-definitions@0.43.1
  (transitive)

• + Added

  @fluidframework/container-utils@0.43.1
  (transitive)

• + Added

  @fluidframework/datastore@0.43.1
  (transitive)

• + Added

  @fluidframework/datastore-definitions@0.43.1
  (transitive)

• + Added

  @fluidframework/driver-utils@0.43.1
  (transitive)

• + Added

  @fluidframework/garbage-collector@0.43.1
  (transitive)

• + Added

  @fluidframework/merge-tree@0.43.1
  (transitive)

• + Added

  @fluidframework/runtime-definitions@0.43.1
  (transitive)

• + Added

  @fluidframework/runtime-utils@0.43.1
  (transitive)

• + Added

  @fluidframework/shared-object-base@0.43.1
  (transitive)

• + Added

  @fluidframework/telemetry-utils@0.43.1
  (transitive)

• - Removed

  assert@^2.0.0

• - Removed

  @fluidframework/container-utils@0.42.4
  (transitive)

• - Removed

  @fluidframework/datastore@0.42.4
  (transitive)

• - Removed

  @fluidframework/datastore-definitions@0.42.4
  (transitive)

• - Removed

  @fluidframework/driver-utils@0.42.4
  (transitive)

• - Removed

  @fluidframework/garbage-collector@0.42.4
  (transitive)

• - Removed

  @fluidframework/merge-tree@0.42.4
  (transitive)

• - Removed

  @fluidframework/runtime-definitions@0.42.4
  (transitive)

• - Removed

  @fluidframework/runtime-utils@0.42.4
  (transitive)

• - Removed

  @fluidframework/shared-object-base@0.42.4
  (transitive)

• - Removed

  @fluidframework/telemetry-utils@0.42.4
  (transitive)

• Updated

  @fluidframework/core-interfaces@^0.39.5

• Updated

  @fluidframework/datastore-definitions@^0.43.0

• Updated

  @fluidframework/merge-tree@^0.43.0

• Updated

  @fluidframework/runtime-definitions@^0.43.0

• Updated

  @fluidframework/runtime-utils@^0.43.0

• Updated

  @fluidframework/shared-object-base@^0.43.0

• Updated

  @fluidframework/telemetry-utils@^0.43.0