@memlab/core - npm Package Compare versions

Comparing version 1.1.1 to 1.1.2

dist/__tests__/parser/HeapParser.test.js

@@ -39,3 +39,3 @@ "use strict";
     const injected = new TestObject();
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     expect(heap.hasObjectWithClassName('TestObject')).toBe(true);
@@ -53,4 +53,4 @@ }), timeout);
     injected = null;
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     expect(heap.hasObjectWithClassName('TestObject')).toBe(false);
 }), timeout);

dist/__tests__/parser/NodeHeap.test.js

@@ -33,3 +33,3 @@ "use strict";
     const object = { 'memlab-test-heap-property': 'memlab-test-heap-value' };
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     expect(heap.hasObjectWithPropertyName('memlab-test-heap-property')).toBe(true);
@@ -43,3 +43,3 @@ }), timeout);
     object = null;
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     expect(heap.hasObjectWithPropertyName('memlab-test-heap-property')).toBe(false);
@@ -64,3 +64,3 @@ }), timeout);
     const object = buildTest();
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     expect(heap.hasObjectWithClassName('TestClass1')).toBe(true);
@@ -86,3 +86,3 @@ expect(heap.hasObjectWithClassName('TestClass2')).toBe(true);
     const object = buildTest();
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     expect(heap.hasObjectWithClassName('TestClass3')).toBe(true);
@@ -97,5 +97,5 @@ expect(heap.hasObjectWithClassName('TestClass4')).toBe(false);
     o2 = null;
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     expect(heap.hasObjectWithTag('memlab-mark-1')).toBe(true);
     expect(heap.hasObjectWithTag('memlab-mark-2')).toBe(false);
 }), timeout);

dist/__tests__/parser/StringNode.test.js

@@ -44,3 +44,3 @@ "use strict";
     injected.complexConcatString += '_suffix';
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     const testObject = heap.getAnyObjectWithClassName('TestObject');
@@ -47,0 +47,0 @@ expect(testObject).not.toBe(null);

dist/__tests__/parser/traverse/HeapNodeTraverse.test.js

@@ -77,3 +77,3 @@ "use strict";
     };
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     expect(checker(heap)).toBe(true);
@@ -139,4 +139,4 @@ }), timeout);
     };
-    const heap = yield (0, NodeHeap_1.getCurrentNodeHeap)();
+    const heap = yield (0, NodeHeap_1.getNodeInnocentHeap)();
     expect(checker(heap)).toBe(true);
 }), timeout);

dist/lib/Console.d.ts

@@ -64,2 +64,3 @@ /**
     }): void;
+    flush(): void;
 }
@@ -66,0 +67,0 @@ declare const _default: MemLabConsole;

dist/lib/Console.js

@@ -343,3 +343,6 @@ /**
     }
+    flush() {
+        this.clearPrevOverwriteMsg();
+    }
 }
 exports.default = MemLabConsole.getInstance();

dist/lib/FileManager.d.ts

@@ -46,2 +46,4 @@ /**
     getCoreProjectBaseDir(): string;
+    getMonoRepoDir(): string;
+    getDocDir(): string;
     getReportOutDir(options?: FileOption): string;
@@ -48,0 +50,0 @@ getPreviewReportDir(options?: FileOption): string;

dist/lib/FileManager.js

@@ -136,2 +136,8 @@ "use strict";
     }
+    getMonoRepoDir() {
+        return path_1.default.join(this.getCoreProjectBaseDir(), '..', '..');
+    }
+    getDocDir() {
+        return path_1.default.join(this.getMonoRepoDir(), 'website', 'docs');
+    }
     getReportOutDir(options = {}) {
@@ -138,0 +144,0 @@ return path_1.default.join(this.getPersistDataDir(options), 'reports');

dist/lib/NodeHeap.d.ts

@@ -10,8 +10,67 @@ /**
  */
-import type { AnyValue, IHeapSnapshot } from './Types';
-declare type AnyObject = Record<AnyValue, AnyValue>;
-export declare function tagObject(o: AnyObject, tag: string): AnyObject;
+import type { IHeapSnapshot } from './Types';
+/**
+ * Tags a string marker to an object instance, which can later be checked by
+ * {@link hasObjectWithTag}. This API does not modify the object instance in
+ * any way (e.g., no additional or hidden properties added to the tagged
+ * object).
+ *
+ * @param o specify the object instance you want to tag, you cannot tag a
+ * [primitive](https://developer.mozilla.org/en-US/docs/Glossary/Primitive).
+ * @param tag marker name to tag on the object instance
+ * @returns returns the tagged object instance (same reference as
+ * the input argument `o`)
+ * * **Examples**:
+ * ```typescript
+ * import type {IHeapSnapshot, AnyValue} from '@memlab/core';
+ * import {config, getNodeInnocentHeap, tagObject} from '@memlab/core';
+ *
+ * test('memory test', async () => {
+ *   config.muteConsole = true;
+ *   const o1: AnyValue = {};
+ *   let o2: AnyValue = {};
+ *
+ *   // tag o1 with marker: "memlab-mark-1", does not modify o1 in any way
+ *   tagObject(o1, 'memlab-mark-1');
+ *   // tag o2 with marker: "memlab-mark-2", does not modify o2 in any way
+ *   tagObject(o2, 'memlab-mark-2');
+ *
+ *   o2 = null;
+ *
+ *   const heap: IHeapSnapshot = await getNodeInnocentHeap();
+ *
+ *   // expect object with marker "memlab-mark-1" exists
+ *   expect(heap.hasObjectWithTag('memlab-mark-1')).toBe(true);
+ *
+ *   // expect object with marker "memlab-mark-2" can be GCed
+ *   expect(heap.hasObjectWithTag('memlab-mark-2')).toBe(false);
+ *
+ * }, 30000);
+ * ```
+ */
+export declare function tagObject<T extends object>(o: T, tag: string): T;
 export declare function dumpNodeHeapSnapshot(): string;
-export declare function getCurrentNodeHeap(): Promise<IHeapSnapshot>;
-export {};
+/**
+ * Take a heap snapshot of the current program state
+ * and parse it as {@link IHeapSnapshot}. Notice that
+ * this API does not calculate some heap analysis meta data
+ * for heap analysis. But this also means faster heap parsing.
+ *
+ * @returns heap representation without heap analysis meta data.
+ *
+ * If you need to get the heap snapshot with heap analysis meta data
+ * use {@link dumpNodeHeapSnapshot} and {@link getHeapFromFile},
+ * for example:
+ * ```typescript
+ * import type {IHeapSnapshot} from '@memlab/core';
+ * import {dumpNodeHeapSnapshot} from '@memlab/core';
+ * import {getHeapFromFile} from '@memlab/heap-analysis';
+ *
+ * (async function () {
+ *   const heapFile = dumpNodeHeapSnapshot();
+ *   const heap: IHeapSnapshot = await getHeapFromFile(heapFile);
+ * })();
+ * ```
+ */
+export declare function getNodeInnocentHeap(): Promise<IHeapSnapshot>;
 //# sourceMappingURL=NodeHeap.d.ts.map

dist/lib/NodeHeap.js

@@ -24,3 +24,3 @@ "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.getCurrentNodeHeap = exports.dumpNodeHeapSnapshot = exports.tagObject = void 0;
+exports.getNodeInnocentHeap = exports.dumpNodeHeapSnapshot = exports.tagObject = void 0;
 const fs_extra_1 = __importDefault(require("fs-extra"));
@@ -37,2 +37,41 @@ const path_1 = __importDefault(require("path"));
 const store = new MemLabTaggedStore();
+/**
+ * Tags a string marker to an object instance, which can later be checked by
+ * {@link hasObjectWithTag}. This API does not modify the object instance in
+ * any way (e.g., no additional or hidden properties added to the tagged
+ * object).
+ *
+ * @param o specify the object instance you want to tag, you cannot tag a
+ * [primitive](https://developer.mozilla.org/en-US/docs/Glossary/Primitive).
+ * @param tag marker name to tag on the object instance
+ * @returns returns the tagged object instance (same reference as
+ * the input argument `o`)
+ * * **Examples**:
+ * ```typescript
+ * import type {IHeapSnapshot, AnyValue} from '@memlab/core';
+ * import {config, getNodeInnocentHeap, tagObject} from '@memlab/core';
+ *
+ * test('memory test', async () => {
+ *   config.muteConsole = true;
+ *   const o1: AnyValue = {};
+ *   let o2: AnyValue = {};
+ *
+ *   // tag o1 with marker: "memlab-mark-1", does not modify o1 in any way
+ *   tagObject(o1, 'memlab-mark-1');
+ *   // tag o2 with marker: "memlab-mark-2", does not modify o2 in any way
+ *   tagObject(o2, 'memlab-mark-2');
+ *
+ *   o2 = null;
+ *
+ *   const heap: IHeapSnapshot = await getNodeInnocentHeap();
+ *
+ *   // expect object with marker "memlab-mark-1" exists
+ *   expect(heap.hasObjectWithTag('memlab-mark-1')).toBe(true);
+ *
+ *   // expect object with marker "memlab-mark-2" can be GCed
+ *   expect(heap.hasObjectWithTag('memlab-mark-2')).toBe(false);
+ *
+ * }, 30000);
+ * ```
+ */
 function tagObject(o, tag) {
@@ -52,3 +91,25 @@ if (!store.taggedObjects[tag]) {
 exports.dumpNodeHeapSnapshot = dumpNodeHeapSnapshot;
-function getCurrentNodeHeap() {
+/**
+ * Take a heap snapshot of the current program state
+ * and parse it as {@link IHeapSnapshot}. Notice that
+ * this API does not calculate some heap analysis meta data
+ * for heap analysis. But this also means faster heap parsing.
+ *
+ * @returns heap representation without heap analysis meta data.
+ *
+ * If you need to get the heap snapshot with heap analysis meta data
+ * use {@link dumpNodeHeapSnapshot} and {@link getHeapFromFile},
+ * for example:
+ * ```typescript
+ * import type {IHeapSnapshot} from '@memlab/core';
+ * import {dumpNodeHeapSnapshot} from '@memlab/core';
+ * import {getHeapFromFile} from '@memlab/heap-analysis';
+ *
+ * (async function () {
+ *   const heapFile = dumpNodeHeapSnapshot();
+ *   const heap: IHeapSnapshot = await getHeapFromFile(heapFile);
+ * })();
+ * ```
+ */
+function getNodeInnocentHeap() {
     return __awaiter(this, void 0, void 0, function* () {
@@ -65,2 +126,2 @@ const file = dumpNodeHeapSnapshot();
 }
-exports.getCurrentNodeHeap = getCurrentNodeHeap;
+exports.getNodeInnocentHeap = getNodeInnocentHeap;

dist/lib/Types.d.ts

@@ -610,11 +610,207 @@ /**
 export interface IHeapSnapshot {
+    /** @internal */
     snapshot: RawHeapSnapshot;
+    /**
+     * A pseudo array containing all heap graph nodes (JS objects in heap).
+     * A JS heap could contain millions of heap objects, so memlab uses
+     * a pseudo array as the collection of all the heap objects. The pseudo
+     * array provides API to query and traverse all heap objects.
+     *
+     * * **Examples**:
+     * ```typescript
+     * import type {IHeapSnapshot, IHeapNode} from '@memlab/core';
+     * import {dumpNodeHeapSnapshot} from '@memlab/core';
+     * import {getHeapFromFile} from '@memlab/heap-analysis';
+     *
+     * (async function () {
+     *   const heapFile = dumpNodeHeapSnapshot();
+     *   const heap: IHeapSnapshot = await getHeapFromFile(heapFile);
+     *
+     *   // get the total number of heap objects
+     *   heap.nodes.length;
+     *
+     *   heap.nodes.forEach((node: IHeapNode) => {
+     *     // traverse each heap object
+     *   });
+     * })();
+     * ```
+     */
     nodes: IHeapNodes;
+    /**
+     * A pseudo array containing all heap graph edges (references to heap objects
+     * in heap). A JS heap could contain millions of references, so memlab uses
+     * a pseudo array as the collection of all the heap edges. The pseudo
+     * array provides API to query and traverse all heap references.
+     *
+     * * **Examples**:
+     * ```typescript
+     * import type {IHeapSnapshot, IHeapEdge} from '@memlab/core';
+     * import {dumpNodeHeapSnapshot} from '@memlab/core';
+     * import {getHeapFromFile} from '@memlab/heap-analysis';
+     *
+     * (async function () {
+     *   const heapFile = dumpNodeHeapSnapshot();
+     *   const heap: IHeapSnapshot = await getHeapFromFile(heapFile);
+     *
+     *   // get the total number of heap references
+     *   heap.edges.length;
+     *
+     *   heap.edges.forEach((edge: IHeapEdge) => {
+     *     // traverse each reference in the heap
+     *   });
+     * })();
+     * ```
+     */
     edges: IHeapEdges;
+    /**
+     * If you have the id of a heap node (JS object in heap), use this API
+     * to get an {@link IHeapNode} associated with the id.
+     * @param id id of the heap node (JS object in heap) you would like to query
+     * @returns the API returns `null` if no heap object has the specified id.
+     *
+     * * **Examples**:
+     * ```typescript
+     * import type {IHeapSnapshot} from '@memlab/core';
+     * import {dumpNodeHeapSnapshot} from '@memlab/core';
+     * import {getHeapFromFile} from '@memlab/heap-analysis';
+     *
+     * (async function () {
+     *   const heapFile = dumpNodeHeapSnapshot();
+     *   const heap: IHeapSnapshot = await getHeapFromFile(heapFile);
+     *
+     *   const node = heap.getNodeById(351);
+     *   node?.id; // should be 351
+     * })();
+     * ```
+     */
     getNodeById(id: number): Nullable<IHeapNode>;
-    clearShortestPathInfo(): void;
+    /**
+     * Search for the heap and check if there is any JS object instance with
+     * a specified constructor name.
+     * @param className The contructor name of the object instance
+     * @returns `true` if there is at least one such object in the heap
+     *
+     * * **Examples**: you can write a jest unit test with memory assertions:
+     * ```typescript
+     * // save as example.test.ts
+     * import type {IHeapSnapshot, Nullable} from '@memlab/core';
+     * import {config, getNodeInnocentHeap} from '@memlab/core';
+     *
+     * class TestObject {
+     *   public arr1 = [1, 2, 3];
+     *   public arr2 = ['1', '2', '3'];
+     * }
+     *
+     * test('memory test with heap assertion', async () => {
+     *   config.muteConsole = true; // no console output
+     *
+     *   let obj: Nullable<TestObject> = new TestObject();
+     *   // get a heap snapshot of the current program state
+     *   let heap: IHeapSnapshot = await getNodeInnocentHeap();
+     *
+     *   // call some function that may add references to obj
+     *   rabbitHole(obj)
+     *
+     *   expect(heap.hasObjectWithClassName('TestObject')).toBe(true);
+     *   obj = null;
+     *
+     *   heap = await getNodeInnocentHeap();
+     *   // if rabbitHole does not have any side effect that
+     *   // adds new references to obj, then obj can be GCed
+     *   expect(heap.hasObjectWithClassName('TestObject')).toBe(false);
+     *
+     * }, 30000);
+     * ```
+     */
     hasObjectWithClassName(className: string): boolean;
+    /**
+     * Search for the heap and get one of the JS object instances with
+     * a specified constructor name (if there is any).
+     * @param className The contructor name of the object instance
+     * @returns a handle pointing to any one of the object instances, returns
+     *          `null` if no such object exists in the heap.
+     *
+     * * **Examples**:
+     * ```typescript
+     * import type {IHeapSnapshot} from '@memlab/core';
+     * import {getNodeInnocentHeap} from '@memlab/core';
+     *
+     * class TestObject {
+     *   public arr1 = [1, 2, 3];
+     *   public arr2 = ['1', '2', '3'];
+     * }
+     *
+     * (async function () {
+     *   const obj = new TestObject();
+     *   // get a heap snapshot of the current program state
+     *   const heap: IHeapSnapshot = await getNodeInnocentHeap();
+     *
+     *   const node = heap.getAnyObjectWithClassName('TestObject');
+     *   console.log(node?.name); // should be 'TestObject'
+     * })();
+     * ```
+     */
     getAnyObjectWithClassName(className: string): Nullable<IHeapNode>;
+    /**
+     * Search for the heap and check if there is any JS object instance with
+     * a specified property name.
+     * @param nameOrIndex The property name (string) or element index (number)
+     * on the object instance
+     * @returns returns `true` if there is at least one such object in the heap
+     *
+     * * **Examples**:
+     * ```typescript
+     * import type {IHeapSnapshot} from '@memlab/core';
+     * import {dumpNodeHeapSnapshot} from '@memlab/core';
+     * import {getHeapFromFile} from '@memlab/heap-analysis';
+     *
+     * (async function () {
+     *   // eslint-disable-next-line @typescript-eslint/no-unused-vars
+     *   const object = {'memlab-test-heap-property': 'memlab-test-heap-value'};
+     *
+     *   const heapFile = dumpNodeHeapSnapshot();
+     *   const heap: IHeapSnapshot = await getHeapFromFile(heapFile);
+     *
+     *   // should be true
+     *   console.log(heap.hasObjectWithPropertyName('memlab-test-heap-property'));
+     * })();
+     * ```
+     */
     hasObjectWithPropertyName(nameOrIndex: string | number): boolean;
+    /**
+     * Search for the heap and check if there is any JS object instance with
+     * a marker tagged by {@link tagObject}.
+     * @param tag marker name on the object instances tagged by {@link tagObject}
+     * @returns returns `true` if there is at least one such object in the heap
+     *
+     * ```typescript
+     * import type {IHeapSnapshot, AnyValue} from '@memlab/core';
+     * import {config, getNodeInnocentHeap, tagObject} from '@memlab/core';
+     *
+     * test('memory test', async () => {
+     *   config.muteConsole = true;
+     *   const o1: AnyValue = {};
+     *   let o2: AnyValue = {};
+     *
+     *   // tag o1 with marker: "memlab-mark-1", does not modify o1 in any way
+     *   tagObject(o1, 'memlab-mark-1');
+     *   // tag o2 with marker: "memlab-mark-2", does not modify o2 in any way
+     *   tagObject(o2, 'memlab-mark-2');
+     *
+     *   o2 = null;
+     *
+     *   const heap: IHeapSnapshot = await getNodeInnocentHeap();
+     *
+     *   // expect object with marker "memlab-mark-1" exists
+     *   expect(heap.hasObjectWithTag('memlab-mark-1')).toBe(true);
+     *
+     *   // expect object with marker "memlab-mark-2" can be GCed
+     *   expect(heap.hasObjectWithTag('memlab-mark-2')).toBe(false);
+     *
+     * }, 30000);
+     * ```
+     */
     hasObjectWithTag(tag: string): boolean;
+    /** @internal */
+    clearShortestPathInfo(): void;
 }
@@ -621,0 +817,0 @@ export interface IHeapLocation {

dist/lib/Utils.js

@@ -545,2 +545,3 @@ "use strict";
         }
+        Console_1.default.flush();
         return ret;
@@ -547,0 +548,0 @@ });

package.json

 {
   "name": "@memlab/core",
-  "version": "1.1.1",
+  "version": "1.1.2",
   "license": "MIT",
@@ -61,2 +61,3 @@ "description": "memlab core libraries",
     "test-pkg": "jest .",
+    "publish-patch": "npm version patch --force && npm publish",
     "clean-pkg": "rm -rf ./dist && rm -rf ./node_modules && rm -f ./tsconfig.tsbuildinfo"
@@ -63,0 +64,0 @@ },

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Improved metrics

Total package byte prevSize

464446

increased by2.71%

Lines of code

12015

increased by2.82%

No dependency changes