@tko/computed - npm Package Compare versions

Comparing version 4.0.0-beta1.3 to 4.0.0

dist/computed.js

@@ -1,2 +0,3 @@
-// @tko/computed 🥊 4.0.0-beta1.3 ESM
+// @tko/computed 🥊 4.0.0 ESM
+"use strict";
 import {
@@ -44,7 +45,7 @@ addDisposeCallback,
   }
-  if (typeof options2.read !== "function") {
+  if (typeof options2?.read !== "function") {
     throw Error("Pass a function that returns the value of the computed");
   }
-  var writeFunction = options2.write;
-  var state = {
+  const writeFunction = options2.write;
+  const state = {
     latestValue: void 0,
@@ -60,4 +61,4 @@ isStale: true,
     evaluatorFunctionTarget: evaluatorFunctionTarget || options2.owner,
-    disposeWhenNodeIsRemoved: options2.disposeWhenNodeIsRemoved || options2.disposeWhenNodeIsRemoved || null,
-    disposeWhen: options2.disposeWhen || options2.disposeWhen,
+    disposeWhenNodeIsRemoved: options2.disposeWhenNodeIsRemoved || null,
+    disposeWhen: options2.disposeWhen,
     domNodeDisposalCallback: null,
@@ -73,3 +74,5 @@ dependencyTracking: {},
       } else {
-        throw new Error("Cannot write a value to a computed unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters.");
+        throw new Error(
+          "Cannot write a value to a computed unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters."
+        );
       }
@@ -82,2 +85,3 @@ return this;
       if (state.isDirty || state.isSleeping && computedObservable.haveDependenciesChanged()) {
+        ;
         computedObservable.evaluateImmediate();
@@ -112,8 +116,13 @@ }
   if (!state.isSleeping && !options2.deferEvaluation) {
+    ;
     computedObservable.evaluateImmediate();
   }
   if (state.disposeWhenNodeIsRemoved && computedObservable.isActive()) {
-    addDisposeCallback(state.disposeWhenNodeIsRemoved, state.domNodeDisposalCallback = function() {
-      computedObservable.dispose();
-    });
+    addDisposeCallback(
+      state.disposeWhenNodeIsRemoved,
+      state.domNodeDisposalCallback = function() {
+        ;
+        computedObservable.dispose();
+      }
+    );
   }
@@ -128,3 +137,3 @@ return computedObservable;
 function computedBeginDependencyDetectionCallback(subscribable2, id) {
-  var computedObservable = this.computedObservable, state = computedObservable[computedState];
+  const computedObservable = this.computedObservable, state = computedObservable[computedState];
   if (!state.isDisposed) {
@@ -136,3 +145,7 @@ if (this.disposalCount && this.disposalCandidates[id]) {
     } else if (!state.dependencyTracking[id]) {
-      computedObservable.addDependencyTracking(id, subscribable2, state.isSleeping ? { _target: subscribable2 } : computedObservable.subscribeToDependency(subscribable2));
+      computedObservable.addDependencyTracking(
+        id,
+        subscribable2,
+        state.isSleeping ? { _target: subscribable2 } : computedObservable.subscribeToDependency(subscribable2)
+      );
     }
@@ -151,3 +164,3 @@ if (subscribable2._notificationIsPending) {
     const dependencyTracking = this[computedState].dependencyTracking;
-    const dependentObservables = [];
+    const dependentObservables = new Array();
     objectForEach(dependencyTracking, function(id, dependency) {
@@ -167,3 +180,3 @@ dependentObservables[dependency._order] = dependency._target;
   haveDependenciesChanged() {
-    var id, dependency, dependencyTracking = this[computedState].dependencyTracking;
+    let id, dependency, dependencyTracking = this[computedState].dependencyTracking;
     for (id in dependencyTracking) {
@@ -177,6 +190,10 @@ if (hasOwnProperty(dependencyTracking, id)) {
     }
+    return false;
   },
   markDirty() {
     if (this._evalDelayed && !this[computedState].isBeingEvaluated) {
-      this._evalDelayed(false);
+      this._evalDelayed(
+        false
+        /* notifyChange */
+      );
     }
@@ -197,3 +214,3 @@ },
     if (target._deferUpdates) {
-      var dirtySub = target.subscribe(this.markDirty, this, "dirty"), changeSub = target.subscribe(this.respondToChange, this);
+      const dirtySub = target.subscribe(this.markDirty, this, "dirty"), changeSub = target.subscribe(this.respondToChange, this);
       return {
@@ -211,16 +228,25 @@ _target: target,
   evaluatePossiblyAsync() {
-    var computedObservable = this, throttleEvaluationTimeout = computedObservable.throttleEvaluation;
+    const computedObservable = this, throttleEvaluationTimeout = computedObservable.throttleEvaluation;
     if (throttleEvaluationTimeout && throttleEvaluationTimeout >= 0) {
       clearTimeout(this[computedState].evaluationTimeoutInstance);
       this[computedState].evaluationTimeoutInstance = safeSetTimeout(function() {
-        computedObservable.evaluateImmediate(true);
+        computedObservable.evaluateImmediate(
+          true
+          /* notifyChange */
+        );
       }, throttleEvaluationTimeout);
     } else if (computedObservable._evalDelayed) {
-      computedObservable._evalDelayed(true);
+      computedObservable._evalDelayed(
+        true
+        /* notifyChange */
+      );
     } else {
-      computedObservable.evaluateImmediate(true);
+      computedObservable.evaluateImmediate(
+        true
+        /* notifyChange */
+      );
     }
   },
   evaluateImmediate(notifyChange) {
-    var computedObservable = this, state = computedObservable[computedState], disposeWhen = state.disposeWhen, changed = false;
+    let computedObservable = this, state = computedObservable[computedState], disposeWhen = state.disposeWhen, changed = false;
     if (state.isBeingEvaluated) {
@@ -249,4 +275,4 @@ return;
   evaluateImmediate_CallReadWithDependencyDetection(notifyChange) {
-    var computedObservable = this, state = computedObservable[computedState], changed = false;
-    var isInitial = state.pure ? void 0 : !state.dependenciesCount, dependencyDetectionContext = {
+    let computedObservable = this, state = computedObservable[computedState], changed = false;
+    const isInitial = state.pure ? void 0 : !state.dependenciesCount, dependencyDetectionContext = {
       computedObservable,
@@ -264,3 +290,3 @@ disposalCandidates: state.dependencyTracking,
     state.dependenciesCount = 0;
-    var newValue = this.evaluateImmediate_CallReadThenEndDependencyDetection(state, dependencyDetectionContext);
+    const newValue = this.evaluateImmediate_CallReadThenEndDependencyDetection(state, dependencyDetectionContext);
     if (!state.dependenciesCount) {
@@ -297,3 +323,3 @@ computedObservable.dispose();
     try {
-      var readFunction = state.readFunction;
+      const readFunction = state.readFunction;
       return state.evaluatorFunctionTarget ? readFunction.call(state.evaluatorFunctionTarget) : readFunction();
@@ -338,3 +364,7 @@ } finally {
         }
-        this._limitChange(this, !isChange);
+        this._limitChange(
+          this,
+          !isChange
+          /* isDirty */
+        );
       }
@@ -344,3 +374,3 @@ });
   dispose() {
-    var state = this[computedState];
+    const state = this[computedState];
     if (!state.isSleeping && state.dependencyTracking) {
@@ -359,5 +389,5 @@ objectForEach(state.dependencyTracking, function(id, dependency) {
 };
-var pureComputedOverrides = {
+const pureComputedOverrides = {
   beforeSubscriptionAdd(event) {
-    var computedObservable = this, state = computedObservable[computedState];
+    const computedObservable = this, state = computedObservable[computedState];
     if (!state.isDisposed && state.isSleeping && event === "change") {
@@ -372,3 +402,3 @@ state.isSleeping = false;
       } else {
-        var dependenciesOrder = [];
+        const dependenciesOrder = new Array();
         objectForEach(state.dependencyTracking, function(id, dependency) {
@@ -378,3 +408,3 @@ dependenciesOrder[dependency._order] = id;
         arrayForEach(dependenciesOrder, function(id, order) {
-          var dependency = state.dependencyTracking[id], subscription = computedObservable.subscribeToDependency(dependency._target);
+          const dependency = state.dependencyTracking[id], subscription = computedObservable.subscribeToDependency(dependency._target);
           subscription._order = order;
@@ -396,3 +426,3 @@ subscription._version = dependency._version;
   afterSubscriptionRemove(event) {
-    var state = this[computedState];
+    const state = this[computedState];
     if (!state.isDisposed && event === "change" && !this.hasSubscriptionsForEvent("change")) {
@@ -414,3 +444,3 @@ objectForEach(state.dependencyTracking, function(id, dependency) {
   getVersion() {
-    var state = this[computedState];
+    const state = this[computedState];
     if (state.isSleeping && (state.isStale || this.haveDependenciesChanged())) {
@@ -422,3 +452,3 @@ this.evaluateImmediate();
 };
-var deferEvaluationOverrides = {
+const deferEvaluationOverrides = {
   beforeSubscriptionAdd(event) {
@@ -431,3 +461,3 @@ if (event === "change" || event === "beforeChange") {
 Object.setPrototypeOf(computed.fn, subscribable.fn);
-var protoProp = observable.protoProperty;
+const protoProp = observable.protoProperty;
 computed.fn[protoProp] = computed;
@@ -443,8 +473,10 @@ observable.observablePrototypes.add(computed);
   if (typeof evaluatorFunctionOrOptions === "function") {
-    return computed(evaluatorFunctionOrOptions, evaluatorFunctionTarget, { "pure": true });
+    const evaluator = evaluatorFunctionOrOptions;
+    return computed(evaluator, evaluatorFunctionTarget, { pure: true });
   } else {
-    evaluatorFunctionOrOptions = extend({}, evaluatorFunctionOrOptions);
-    evaluatorFunctionOrOptions.pure = true;
-    return computed(evaluatorFunctionOrOptions, evaluatorFunctionTarget);
+    let options2 = evaluatorFunctionOrOptions;
+    options2 = extend({}, options2);
+    options2.pure = true;
+    return computed(options2, evaluatorFunctionTarget);
   }
 }

dist/computed.js.map

 {
   "version": 3,
   "sources": ["../src/computed.ts"],
-  "sourcesContent": ["//\n// Computed Observable Values\n//\n// (before tko, `computed` was also known as `dependentObservable`)\n//\nimport {\n    addDisposeCallback,\n    arrayForEach,\n    createSymbolOrString,\n    domNodeIsAttachedToDocument,\n    extend,\n    options,\n    hasOwnProperty,\n    objectForEach,\n    options as koOptions,\n    removeDisposeCallback,\n    safeSetTimeout,\n} from '@tko/utils'\n\nimport {\n    dependencyDetection,\n    extenders,\n    valuesArePrimitiveAndEqual,\n    observable,\n    subscribable,\n    LATEST_VALUE\n} from '@tko/observable'\n\nconst computedState = createSymbolOrString('_state')\nconst DISPOSED_STATE = {\n  dependencyTracking: null,\n  dependenciesCount: 0,\n  isDisposed: true,\n  isStale: false,\n  isDirty: false,\n  isSleeping: false,\n  disposeWhenNodeIsRemoved: null,\n  readFunction: null,\n  _options: null\n}\n\nexport function computed (evaluatorFunctionOrOptions, evaluatorFunctionTarget, options) {\n  if (typeof evaluatorFunctionOrOptions === 'object') {\n        // Single-parameter syntax - everything is on this \"options\" param\n    options = evaluatorFunctionOrOptions\n  } else {\n        // Multi-parameter syntax - construct the options according to the params passed\n    options = options || {}\n    if (evaluatorFunctionOrOptions) {\n      options.read = evaluatorFunctionOrOptions\n    }\n  }\n  if (typeof options.read !== 'function') {\n    throw Error('Pass a function that returns the value of the computed')\n  }\n\n  var writeFunction = options.write\n  var state = {\n    latestValue: undefined,\n    isStale: true,\n    isDirty: true,\n    isBeingEvaluated: false,\n    suppressDisposalUntilDisposeWhenReturnsFalse: false,\n    isDisposed: false,\n    pure: false,\n    isSleeping: false,\n    readFunction: options.read,\n    evaluatorFunctionTarget: evaluatorFunctionTarget || options.owner,\n    disposeWhenNodeIsRemoved: options.disposeWhenNodeIsRemoved || options.disposeWhenNodeIsRemoved || null,\n    disposeWhen: options.disposeWhen || options.disposeWhen,\n    domNodeDisposalCallback: null,\n    dependencyTracking: {},\n    dependenciesCount: 0,\n    evaluationTimeoutInstance: null\n  }\n\n  function computedObservable () {\n    if (arguments.length > 0) {\n      if (typeof writeFunction === 'function') {\n                // Writing a value\n        writeFunction.apply(state.evaluatorFunctionTarget, arguments)\n      } else {\n        throw new Error(\"Cannot write a value to a computed unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters.\")\n      }\n      return this // Permits chained assignments\n    } else {\n      // Reading the value\n      if (!state.isDisposed) {\n        dependencyDetection.registerDependency(computedObservable)\n      }\n      if (state.isDirty || (state.isSleeping && computedObservable.haveDependenciesChanged())) {\n        computedObservable.evaluateImmediate()\n      }\n      return state.latestValue\n    }\n  }\n\n  computedObservable[computedState] = state\n  computedObservable.isWriteable = typeof writeFunction === 'function'\n\n  subscribable.fn.init(computedObservable)\n\n  // Inherit from 'computed'\n  Object.setPrototypeOf(computedObservable, computed.fn)\n\n  if (options.pure) {\n    state.pure = true\n    state.isSleeping = true     // Starts off sleeping; will awake on the first subscription\n    extend(computedObservable, pureComputedOverrides)\n  } else if (options.deferEvaluation) {\n    extend(computedObservable, deferEvaluationOverrides)\n  }\n\n  if (koOptions.deferUpdates) {\n    extenders.deferred(computedObservable, true)\n  }\n\n  if (koOptions.debug) {\n        // #1731 - Aid debugging by exposing the computed's options\n    computedObservable._options = options\n  }\n\n  if (state.disposeWhenNodeIsRemoved) {\n        // Since this computed is associated with a DOM node, and we don't want to dispose the computed\n        // until the DOM node is *removed* from the document (as opposed to never having been in the document),\n        // we'll prevent disposal until \"disposeWhen\" first returns false.\n    state.suppressDisposalUntilDisposeWhenReturnsFalse = true\n\n        // disposeWhenNodeIsRemoved: true can be used to opt into the \"only dispose after first false result\"\n        // behavior even if there's no specific node to watch. In that case, clear the option so we don't try\n        // to watch for a non-node's disposal. This technique is intended for KO's internal use only and shouldn't\n        // be documented or used by application code, as it's likely to change in a future version of KO.\n    if (!state.disposeWhenNodeIsRemoved.nodeType) {\n      state.disposeWhenNodeIsRemoved = null\n    }\n  }\n\n    // Evaluate, unless sleeping or deferEvaluation is true\n  if (!state.isSleeping && !options.deferEvaluation) {\n    computedObservable.evaluateImmediate()\n  }\n\n    // Attach a DOM node disposal callback so that the computed will be proactively disposed as soon as the node is\n    // removed using ko.removeNode. But skip if isActive is false (there will never be any dependencies to dispose).\n  if (state.disposeWhenNodeIsRemoved && computedObservable.isActive()) {\n    addDisposeCallback(state.disposeWhenNodeIsRemoved, state.domNodeDisposalCallback = function () {\n      computedObservable.dispose()\n    })\n  }\n\n  return computedObservable\n}\n\n// Utility function that disposes a given dependencyTracking entry\nfunction computedDisposeDependencyCallback (id, entryToDispose) {\n  if (entryToDispose !== null && entryToDispose.dispose) {\n    entryToDispose.dispose()\n  }\n}\n\n// This function gets called each time a dependency is detected while evaluating a computed.\n// It's factored out as a shared function to avoid creating unnecessary function instances during evaluation.\nfunction computedBeginDependencyDetectionCallback (subscribable, id) {\n  var computedObservable = this.computedObservable,\n    state = computedObservable[computedState]\n  if (!state.isDisposed) {\n    if (this.disposalCount && this.disposalCandidates[id]) {\n      // Don't want to dispose this subscription, as it's still being used\n      computedObservable.addDependencyTracking(id, subscribable, this.disposalCandidates[id])\n      this.disposalCandidates[id] = null // No need to actually delete the property - disposalCandidates is a transient object anyway\n      --this.disposalCount\n    } else if (!state.dependencyTracking[id]) {\n      // Brand new subscription - add it\n      computedObservable.addDependencyTracking(id, subscribable, state.isSleeping ? { _target: subscribable } : computedObservable.subscribeToDependency(subscribable))\n    }\n    // If the observable we've accessed has a pending notification, ensure\n    // we get notified of the actual final value (bypass equality checks)\n    if (subscribable._notificationIsPending) {\n      subscribable._notifyNextChangeIfValueIsDifferent()\n    }\n  }\n}\n\ncomputed.fn = {\n  equalityComparer: valuesArePrimitiveAndEqual,\n  getDependenciesCount () {\n    return this[computedState].dependenciesCount\n  },\n\n  getDependencies () {\n    const dependencyTracking = this[computedState].dependencyTracking\n    const dependentObservables = []\n\n    objectForEach(dependencyTracking, function (id, dependency) {\n      dependentObservables[dependency._order] = dependency._target\n    })\n\n    return dependentObservables\n  },\n\n  addDependencyTracking (id, target, trackingObj) {\n    if (this[computedState].pure && target === this) {\n      throw Error(\"A 'pure' computed must not be called recursively\")\n    }\n\n    this[computedState].dependencyTracking[id] = trackingObj\n    trackingObj._order = this[computedState].dependenciesCount++\n    trackingObj._version = target.getVersion()\n  },\n  haveDependenciesChanged () {\n    var id, dependency, dependencyTracking = this[computedState].dependencyTracking\n    for (id in dependencyTracking) {\n      if (hasOwnProperty(dependencyTracking, id)) {\n        dependency = dependencyTracking[id]\n        if ((this._evalDelayed && dependency._target._notificationIsPending) || dependency._target.hasChanged(dependency._version)) {\n          return true\n        }\n      }\n    }\n  },\n  markDirty () {\n        // Process \"dirty\" events if we can handle delayed notifications\n    if (this._evalDelayed && !this[computedState].isBeingEvaluated) {\n      this._evalDelayed(false /* notifyChange */)\n    }\n  },\n  isActive () {\n    const state = this[computedState]\n    return state.isDirty || state.dependenciesCount > 0\n  },\n  respondToChange () {\n        // Ignore \"change\" events if we've already scheduled a delayed notification\n    if (!this._notificationIsPending) {\n      this.evaluatePossiblyAsync()\n    } else if (this[computedState].isDirty) {\n      this[computedState].isStale = true\n    }\n  },\n  subscribeToDependency (target) {\n    if (target._deferUpdates) {\n      var dirtySub = target.subscribe(this.markDirty, this, 'dirty'),\n        changeSub = target.subscribe(this.respondToChange, this)\n      return {\n        _target: target,\n        dispose () {\n          dirtySub.dispose()\n          changeSub.dispose()\n        }\n      }\n    } else {\n      return target.subscribe(this.evaluatePossiblyAsync, this)\n    }\n  },\n  evaluatePossiblyAsync () {\n    var computedObservable = this,\n      throttleEvaluationTimeout = computedObservable.throttleEvaluation\n    if (throttleEvaluationTimeout && throttleEvaluationTimeout >= 0) {\n      clearTimeout(this[computedState].evaluationTimeoutInstance)\n      this[computedState].evaluationTimeoutInstance = safeSetTimeout(function () {\n        computedObservable.evaluateImmediate(true /* notifyChange */)\n      }, throttleEvaluationTimeout)\n    } else if (computedObservable._evalDelayed) {\n      computedObservable._evalDelayed(true /* notifyChange */)\n    } else {\n      computedObservable.evaluateImmediate(true /* notifyChange */)\n    }\n  },\n  evaluateImmediate (notifyChange) {\n    var computedObservable = this,\n      state = computedObservable[computedState],\n      disposeWhen = state.disposeWhen,\n      changed = false\n\n    if (state.isBeingEvaluated) {\n      // If the evaluation of a ko.computed causes side effects, it's possible that it will trigger its own re-evaluation.\n      // This is not desirable (it's hard for a developer to realise a chain of dependencies might cause this, and they almost\n      // certainly didn't intend infinite re-evaluations). So, for predictability, we simply prevent ko.computeds from causing\n      // their own re-evaluation. Further discussion at https://github.com/SteveSanderson/knockout/pull/387\n      return\n    }\n\n        // Do not evaluate (and possibly capture new dependencies) if disposed\n    if (state.isDisposed) {\n      return\n    }\n\n    if (state.disposeWhenNodeIsRemoved && !domNodeIsAttachedToDocument(state.disposeWhenNodeIsRemoved) || disposeWhen && disposeWhen()) {\n            // See comment above about suppressDisposalUntilDisposeWhenReturnsFalse\n      if (!state.suppressDisposalUntilDisposeWhenReturnsFalse) {\n        computedObservable.dispose()\n        return\n      }\n    } else {\n            // It just did return false, so we can stop suppressing now\n      state.suppressDisposalUntilDisposeWhenReturnsFalse = false\n    }\n\n    state.isBeingEvaluated = true\n    try {\n      changed = this.evaluateImmediate_CallReadWithDependencyDetection(notifyChange)\n    } finally {\n      state.isBeingEvaluated = false\n    }\n\n    return changed\n  },\n  evaluateImmediate_CallReadWithDependencyDetection (notifyChange) {\n        // This function is really just part of the evaluateImmediate logic. You would never call it from anywhere else.\n        // Factoring it out into a separate function means it can be independent of the try/catch block in evaluateImmediate,\n        // which contributes to saving about 40% off the CPU overhead of computed evaluation (on V8 at least).\n\n    var computedObservable = this,\n      state = computedObservable[computedState],\n      changed = false\n\n        // Initially, we assume that none of the subscriptions are still being used (i.e., all are candidates for disposal).\n        // Then, during evaluation, we cross off any that are in fact still being used.\n    var isInitial = state.pure ? undefined : !state.dependenciesCount,   // If we're evaluating when there are no previous dependencies, it must be the first time\n      dependencyDetectionContext = {\n        computedObservable: computedObservable,\n        disposalCandidates: state.dependencyTracking,\n        disposalCount: state.dependenciesCount\n      }\n\n    dependencyDetection.begin({\n      callbackTarget: dependencyDetectionContext,\n      callback: computedBeginDependencyDetectionCallback,\n      computed: computedObservable,\n      isInitial: isInitial\n    })\n\n    state.dependencyTracking = {}\n    state.dependenciesCount = 0\n\n    var newValue = this.evaluateImmediate_CallReadThenEndDependencyDetection(state, dependencyDetectionContext)\n\n    if (!state.dependenciesCount) {\n      computedObservable.dispose()\n      changed = true // When evaluation causes a disposal, make sure all dependent computeds get notified so they'll see the new state\n    } else {\n      changed = computedObservable.isDifferent(state.latestValue, newValue)\n    }\n\n    if (changed) {\n      if (!state.isSleeping) {\n        computedObservable.notifySubscribers(state.latestValue, 'beforeChange')\n      } else {\n        computedObservable.updateVersion()\n      }\n\n      state.latestValue = newValue\n      if (options.debug) { computedObservable._latestValue = newValue }\n\n      computedObservable.notifySubscribers(state.latestValue, 'spectate')\n\n      if (!state.isSleeping && notifyChange) {\n        computedObservable.notifySubscribers(state.latestValue)\n      }\n\n      if (computedObservable._recordUpdate) {\n        computedObservable._recordUpdate()\n      }\n    }\n\n    if (isInitial) {\n      computedObservable.notifySubscribers(state.latestValue, 'awake')\n    }\n\n    return changed\n  },\n  evaluateImmediate_CallReadThenEndDependencyDetection (state, dependencyDetectionContext) {\n    // This function is really part of the evaluateImmediate_CallReadWithDependencyDetection logic.\n    // You'd never call it from anywhere else. Factoring it out means that evaluateImmediate_CallReadWithDependencyDetection\n    // can be independent of try/finally blocks, which contributes to saving about 40% off the CPU\n    // overhead of computed evaluation (on V8 at least).\n\n    try {\n      var readFunction = state.readFunction\n      return state.evaluatorFunctionTarget ? readFunction.call(state.evaluatorFunctionTarget) : readFunction()\n    } finally {\n      dependencyDetection.end()\n\n      // For each subscription no longer being used, remove it from the active subscriptions list and dispose it\n      if (dependencyDetectionContext.disposalCount && !state.isSleeping) {\n        objectForEach(dependencyDetectionContext.disposalCandidates, computedDisposeDependencyCallback)\n      }\n\n      state.isStale = state.isDirty = false\n    }\n  },\n  peek (forceEvaluate) {\n    // Peek won't ordinarily re-evaluate, except while the computed is sleeping\n    //  or to get the initial value when \"deferEvaluation\" is set.\n    const state = this[computedState]\n    if ((state.isDirty && (forceEvaluate || !state.dependenciesCount)) || (state.isSleeping && this.haveDependenciesChanged())) {\n      this.evaluateImmediate()\n    }\n    return state.latestValue\n  },\n\n  get [LATEST_VALUE] () {\n    return this.peek()\n  },\n\n  limit (limitFunction) {\n    const state = this[computedState]\n    // Override the limit function with one that delays evaluation as well\n    subscribable.fn.limit.call(this, limitFunction)\n    Object.assign(this, {\n      _evalIfChanged () {\n        if (!this[computedState].isSleeping) {\n          if (this[computedState].isStale) {\n            this.evaluateImmediate()\n          } else {\n            this[computedState].isDirty = false\n          }\n        }\n        return state.latestValue\n      },\n      _evalDelayed (isChange) {\n        this._limitBeforeChange(state.latestValue)\n\n        // Mark as dirty\n        state.isDirty = true\n        if (isChange) {\n          state.isStale = true\n        }\n\n        // Pass the observable to the \"limit\" code, which will evaluate it when\n        // it's time to do the notification.\n        this._limitChange(this, !isChange /* isDirty */)\n      }\n    })\n  },\n  dispose () {\n    var state = this[computedState]\n    if (!state.isSleeping && state.dependencyTracking) {\n      objectForEach(state.dependencyTracking, function (id, dependency) {\n        if (dependency.dispose) {\n          dependency.dispose()\n        }\n      })\n    }\n    if (state.disposeWhenNodeIsRemoved && state.domNodeDisposalCallback) {\n      removeDisposeCallback(state.disposeWhenNodeIsRemoved, state.domNodeDisposalCallback)\n    }\n    Object.assign(state, DISPOSED_STATE)\n  }\n}\n\nvar pureComputedOverrides = {\n  beforeSubscriptionAdd (event) {\n        // If asleep, wake up the computed by subscribing to any dependencies.\n    var computedObservable = this,\n      state = computedObservable[computedState]\n    if (!state.isDisposed && state.isSleeping && event === 'change') {\n      state.isSleeping = false\n      if (state.isStale || computedObservable.haveDependenciesChanged()) {\n        state.dependencyTracking = null\n        state.dependenciesCount = 0\n        if (computedObservable.evaluateImmediate()) {\n          computedObservable.updateVersion()\n        }\n      } else {\n        // First put the dependencies in order\n        var dependenciesOrder = []\n        objectForEach(state.dependencyTracking, function (id, dependency) {\n          dependenciesOrder[dependency._order] = id\n        })\n                // Next, subscribe to each one\n        arrayForEach(dependenciesOrder, function (id, order) {\n          var dependency = state.dependencyTracking[id],\n            subscription = computedObservable.subscribeToDependency(dependency._target)\n          subscription._order = order\n          subscription._version = dependency._version\n          state.dependencyTracking[id] = 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+  "sourcesContent": ["//\n// Computed Observable Values\n//\n// (before tko, `computed` was also known as `dependentObservable`)\n//\nimport {\n  addDisposeCallback,\n  arrayForEach,\n  createSymbolOrString,\n  domNodeIsAttachedToDocument,\n  extend,\n  options,\n  hasOwnProperty,\n  objectForEach,\n  options as koOptions,\n  removeDisposeCallback,\n  safeSetTimeout\n} from '@tko/utils'\n\nimport {\n  dependencyDetection,\n  extenders,\n  valuesArePrimitiveAndEqual,\n  observable,\n  subscribable,\n  LATEST_VALUE\n} from '@tko/observable'\n\nimport type { Observable, Subscribable } from '@tko/observable'\n\nconst computedState: symbol = createSymbolOrString('_state')\nconst DISPOSED_STATE = {\n  dependencyTracking: null,\n  dependenciesCount: 0,\n  isDisposed: true,\n  isStale: false,\n  isDirty: false,\n  isSleeping: false,\n  disposeWhenNodeIsRemoved: null,\n  readFunction: null,\n  _options: null\n}\n\nexport interface Computed<T = any> extends ComputedFunctions<T> {\n  (): T\n  (value: T): this\n}\n\nexport interface ComputedFunctions<T = any> extends Subscribable<T> {\n  // It's possible for a to be undefined, since the equalityComparer is run on the initial\n  // computation with undefined as the first argument. This is user-relevant for deferred computeds.\n  equalityComparer(a: T | undefined, b: T): boolean\n  peek(): T\n  dispose(): void\n  isActive(): boolean\n  getDependenciesCount(): number\n  getDependencies(): Subscribable[]\n}\n\n// used in computed, but empty interface is pointless. Check if it's needed\n// eslint-disable-next-line @typescript-eslint/no-empty-object-type\nexport interface PureComputed<T = any> extends Computed<T> {}\n\nexport type ComputedReadFunction<T = any, TTarget = void> =\n  | Subscribable<T>\n  | Observable<T>\n  | Computed<T>\n  | ((this: TTarget) => T)\nexport type ComputedWriteFunction<T = any, TTarget = void> = (this: TTarget, val: T) => void\nexport type MaybeComputed<T = any> = T | Computed<T>\n\nexport interface ComputedOptions<T = any, TTarget = void> {\n  read?: ComputedReadFunction<T, TTarget>\n  write?: ComputedWriteFunction<T, TTarget>\n  owner?: TTarget\n  pure?: boolean\n  deferEvaluation?: boolean\n  disposeWhenNodeIsRemoved?: Node\n  disposeWhen?: () => boolean\n}\n\ninterface State {\n  latestValue?: any\n  isStale: boolean\n  isDirty: boolean\n  isBeingEvaluated: boolean\n  suppressDisposalUntilDisposeWhenReturnsFalse: boolean\n  isDisposed: boolean\n  pure: boolean\n  isSleeping: boolean\n  readFunction: ComputedReadFunction\n  evaluatorFunctionTarget: any\n  disposeWhenNodeIsRemoved: Node | null\n  disposeWhen?: () => boolean\n  domNodeDisposalCallback: (() => void) | null\n  dependencyTracking: any\n  dependenciesCount: number\n  evaluationTimeoutInstance: any\n}\n\nexport function computed(\n  evaluatorFunctionOrOptions?: ComputedOptions<any, void> | ComputedReadFunction<any, any>,\n  evaluatorFunctionTarget?: any,\n  options?: ComputedOptions\n): Computed {\n  if (typeof evaluatorFunctionOrOptions === 'object') {\n    // Single-parameter syntax - everything is on this \"options\" param\n    options = evaluatorFunctionOrOptions as ComputedOptions\n  } else {\n    // Multi-parameter syntax - construct the options according to the params passed\n    options = options || {}\n    if (evaluatorFunctionOrOptions) {\n      options!.read = evaluatorFunctionOrOptions\n    }\n  }\n  if (typeof options?.read !== 'function') {\n    throw Error('Pass a function that returns the value of the computed')\n  }\n\n  const writeFunction = options.write\n  const state: State = {\n    latestValue: undefined,\n    isStale: true,\n    isDirty: true,\n    isBeingEvaluated: false,\n    suppressDisposalUntilDisposeWhenReturnsFalse: false,\n    isDisposed: false,\n    pure: false,\n    isSleeping: false,\n    readFunction: options.read,\n    evaluatorFunctionTarget: evaluatorFunctionTarget || options.owner,\n    disposeWhenNodeIsRemoved: options.disposeWhenNodeIsRemoved || null,\n    disposeWhen: options.disposeWhen,\n    domNodeDisposalCallback: null,\n    dependencyTracking: {},\n    dependenciesCount: 0,\n    evaluationTimeoutInstance: null\n  }\n\n  function computedObservable() {\n    if (arguments.length > 0) {\n      if (typeof writeFunction === 'function') {\n        // Writing a value\n        writeFunction.apply(state.evaluatorFunctionTarget, arguments as any)\n      } else {\n        throw new Error(\n          \"Cannot write a value to a computed unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters.\"\n        )\n      }\n      return this // Permits chained assignments\n    } else {\n      // Reading the value\n      if (!state.isDisposed) {\n        dependencyDetection.registerDependency(computedObservable)\n      }\n      if (state.isDirty || (state.isSleeping && (computedObservable as any).haveDependenciesChanged())) {\n        ;(computedObservable as any).evaluateImmediate()\n      }\n      return state.latestValue\n    }\n  }\n\n  computedObservable[computedState] = state\n  computedObservable.isWriteable = typeof writeFunction === 'function'\n\n  subscribable.fn.init(computedObservable)\n\n  // Inherit from 'computed'\n  Object.setPrototypeOf(computedObservable, computed.fn)\n\n  if (options.pure) {\n    state.pure = true\n    state.isSleeping = true // Starts off sleeping; will awake on the first subscription\n    extend(computedObservable, pureComputedOverrides)\n  } else if (options.deferEvaluation) {\n    extend(computedObservable, deferEvaluationOverrides)\n  }\n\n  if (koOptions.deferUpdates) {\n    extenders.deferred(computedObservable, true)\n  }\n\n  if (koOptions.debug) {\n    // #1731 - Aid debugging by exposing the computed's options\n    computedObservable._options = options\n  }\n\n  if (state.disposeWhenNodeIsRemoved) {\n    // Since this computed is associated with a DOM node, and we don't want to dispose the computed\n    // until the DOM node is *removed* from the document (as opposed to never having been in the document),\n    // we'll prevent disposal until \"disposeWhen\" first returns false.\n    state.suppressDisposalUntilDisposeWhenReturnsFalse = true\n\n    // disposeWhenNodeIsRemoved: true can be used to opt into the \"only dispose after first false result\"\n    // behavior even if there's no specific node to watch. In that case, clear the option so we don't try\n    // to watch for a non-node's disposal. This technique is intended for KO's internal use only and shouldn't\n    // be documented or used by application code, as it's likely to change in a future version of KO.\n    if (!state.disposeWhenNodeIsRemoved.nodeType) {\n      state.disposeWhenNodeIsRemoved = null\n    }\n  }\n\n  // Evaluate, unless sleeping or deferEvaluation is true\n  if (!state.isSleeping && !options.deferEvaluation) {\n    ;(computedObservable as any).evaluateImmediate()\n  }\n\n  // Attach a DOM node disposal callback so that the computed will be proactively disposed as soon as the node is\n  // removed using ko.removeNode. But skip if isActive is false (there will never be any dependencies to dispose).\n  if (state.disposeWhenNodeIsRemoved && (computedObservable as any).isActive()) {\n    addDisposeCallback(\n      state.disposeWhenNodeIsRemoved,\n      (state.domNodeDisposalCallback = function () {\n        ;(computedObservable as any).dispose()\n      })\n    )\n  }\n\n  return computedObservable as unknown as Computed\n}\n\n// Utility function that disposes a given dependencyTracking entry\nfunction computedDisposeDependencyCallback(id, entryToDispose) {\n  if (entryToDispose !== null && entryToDispose.dispose) {\n    entryToDispose.dispose()\n  }\n}\n\n// This function gets called each time a dependency is detected while evaluating a computed.\n// It's factored out as a shared function to avoid creating unnecessary function instances during evaluation.\nfunction computedBeginDependencyDetectionCallback(subscribable, id) {\n  const computedObservable = this.computedObservable,\n    state = computedObservable[computedState]\n  if (!state.isDisposed) {\n    if (this.disposalCount && this.disposalCandidates[id]) {\n      // Don't want to dispose this subscription, as it's still being used\n      computedObservable.addDependencyTracking(id, subscribable, this.disposalCandidates[id])\n      this.disposalCandidates[id] = null // No need to actually delete the property - disposalCandidates is a transient object anyway\n      --this.disposalCount\n    } else if (!state.dependencyTracking[id]) {\n      // Brand new subscription - add it\n      computedObservable.addDependencyTracking(\n        id,\n        subscribable,\n        state.isSleeping ? { _target: subscribable } : computedObservable.subscribeToDependency(subscribable)\n      )\n    }\n    // If the observable we've accessed has a pending notification, ensure\n    // we get notified of the actual final value (bypass equality checks)\n    if (subscribable._notificationIsPending) {\n      subscribable._notifyNextChangeIfValueIsDifferent()\n    }\n  }\n}\n\ncomputed.fn = {\n  equalityComparer: valuesArePrimitiveAndEqual,\n  getDependenciesCount(): number {\n    return this[computedState].dependenciesCount\n  },\n\n  getDependencies() {\n    const dependencyTracking = this[computedState].dependencyTracking\n    const dependentObservables = new Array()\n\n    objectForEach(dependencyTracking, function (id, dependency) {\n      dependentObservables[dependency._order] = dependency._target\n    })\n\n    return dependentObservables\n  },\n\n  addDependencyTracking(id, target, trackingObj) {\n    if (this[computedState].pure && target === this) {\n      throw Error(\"A 'pure' computed must not be called recursively\")\n    }\n\n    this[computedState].dependencyTracking[id] = trackingObj\n    trackingObj._order = this[computedState].dependenciesCount++\n    trackingObj._version = target.getVersion()\n  },\n  haveDependenciesChanged() {\n    let id,\n      dependency,\n      dependencyTracking = this[computedState].dependencyTracking\n    for (id in dependencyTracking) {\n      if (hasOwnProperty(dependencyTracking, id)) {\n        dependency = dependencyTracking[id]\n        if (\n          (this._evalDelayed && dependency._target._notificationIsPending)\n          || dependency._target.hasChanged(dependency._version)\n        ) {\n          return true\n        }\n      }\n    }\n    return false\n  },\n  markDirty() {\n    // Process \"dirty\" events if we can handle delayed notifications\n    if (this._evalDelayed && !this[computedState].isBeingEvaluated) {\n      this._evalDelayed(false /* notifyChange */)\n    }\n  },\n  isActive() {\n    const state = this[computedState]\n    return state.isDirty || state.dependenciesCount > 0\n  },\n  respondToChange() {\n    // Ignore \"change\" events if we've already scheduled a delayed notification\n    if (!this._notificationIsPending) {\n      this.evaluatePossiblyAsync()\n    } else if (this[computedState].isDirty) {\n      this[computedState].isStale = true\n    }\n  },\n  subscribeToDependency(target) {\n    if (target._deferUpdates) {\n      const dirtySub = target.subscribe(this.markDirty, this, 'dirty'),\n        changeSub = target.subscribe(this.respondToChange, this)\n      return {\n        _target: target,\n        dispose() {\n          dirtySub.dispose()\n          changeSub.dispose()\n        }\n      }\n    } else {\n      return target.subscribe(this.evaluatePossiblyAsync, this)\n    }\n  },\n  evaluatePossiblyAsync() {\n    const computedObservable = this,\n      throttleEvaluationTimeout = computedObservable.throttleEvaluation\n    if (throttleEvaluationTimeout && throttleEvaluationTimeout >= 0) {\n      clearTimeout(this[computedState].evaluationTimeoutInstance)\n      this[computedState].evaluationTimeoutInstance = safeSetTimeout(function () {\n        computedObservable.evaluateImmediate(true /* notifyChange */)\n      }, throttleEvaluationTimeout)\n    } else if (computedObservable._evalDelayed) {\n      computedObservable._evalDelayed(true /* notifyChange */)\n    } else {\n      computedObservable.evaluateImmediate(true /* notifyChange */)\n    }\n  },\n  evaluateImmediate(notifyChange) {\n    let computedObservable = this,\n      state = computedObservable[computedState],\n      disposeWhen = state.disposeWhen,\n      changed = false\n\n    if (state.isBeingEvaluated) {\n      // If the evaluation of a ko.computed causes side effects, it's possible that it will trigger its own re-evaluation.\n      // This is not desirable (it's hard for a developer to realise a chain of dependencies might cause this, and they almost\n      // certainly didn't intend infinite re-evaluations). So, for predictability, we simply prevent ko.computeds from causing\n      // their own re-evaluation. Further discussion at https://github.com/SteveSanderson/knockout/pull/387\n      return\n    }\n\n    // Do not evaluate (and possibly capture new dependencies) if disposed\n    if (state.isDisposed) {\n      return\n    }\n\n    if (\n      (state.disposeWhenNodeIsRemoved && !domNodeIsAttachedToDocument(state.disposeWhenNodeIsRemoved))\n      || (disposeWhen && disposeWhen())\n    ) {\n      // See comment above about suppressDisposalUntilDisposeWhenReturnsFalse\n      if (!state.suppressDisposalUntilDisposeWhenReturnsFalse) {\n        computedObservable.dispose()\n        return\n      }\n    } else {\n      // It just did return false, so we can stop suppressing now\n      state.suppressDisposalUntilDisposeWhenReturnsFalse = false\n    }\n\n    state.isBeingEvaluated = true\n    try {\n      changed = this.evaluateImmediate_CallReadWithDependencyDetection(notifyChange)\n    } finally {\n      state.isBeingEvaluated = false\n    }\n\n    return changed\n  },\n  evaluateImmediate_CallReadWithDependencyDetection(notifyChange) {\n    // This function is really just part of the evaluateImmediate logic. You would never call it from anywhere else.\n    // Factoring it out into a separate function means it can be independent of the try/catch block in evaluateImmediate,\n    // which contributes to saving about 40% off the CPU overhead of computed evaluation (on V8 at least).\n\n    let computedObservable = this,\n      state = computedObservable[computedState],\n      changed = false\n\n    // Initially, we assume that none of the subscriptions are still being used (i.e., all are candidates for disposal).\n    // Then, during evaluation, we cross off any that are in fact still being used.\n    const isInitial = state.pure ? undefined : !state.dependenciesCount, // If we're evaluating when there are no previous dependencies, it must be the first time\n      dependencyDetectionContext = {\n        computedObservable: computedObservable,\n        disposalCandidates: state.dependencyTracking,\n        disposalCount: state.dependenciesCount\n      }\n\n    dependencyDetection.begin({\n      callbackTarget: dependencyDetectionContext,\n      callback: computedBeginDependencyDetectionCallback,\n      computed: computedObservable,\n      isInitial: isInitial\n    })\n\n    state.dependencyTracking = {}\n    state.dependenciesCount = 0\n\n    const newValue = this.evaluateImmediate_CallReadThenEndDependencyDetection(state, dependencyDetectionContext)\n\n    if (!state.dependenciesCount) {\n      computedObservable.dispose()\n      changed = true // When evaluation causes a disposal, make sure all dependent computeds get notified so they'll see the new state\n    } else {\n      changed = computedObservable.isDifferent(state.latestValue, newValue)\n    }\n\n    if (changed) {\n      if (!state.isSleeping) {\n        computedObservable.notifySubscribers(state.latestValue, 'beforeChange')\n      } else {\n        computedObservable.updateVersion()\n      }\n\n      state.latestValue = newValue\n      if (options.debug) {\n        computedObservable._latestValue = newValue\n      }\n\n      computedObservable.notifySubscribers(state.latestValue, 'spectate')\n\n      if (!state.isSleeping && notifyChange) {\n        computedObservable.notifySubscribers(state.latestValue)\n      }\n\n      if (computedObservable._recordUpdate) {\n        computedObservable._recordUpdate()\n      }\n    }\n\n    if (isInitial) {\n      computedObservable.notifySubscribers(state.latestValue, 'awake')\n    }\n\n    return changed\n  },\n  evaluateImmediate_CallReadThenEndDependencyDetection(state, dependencyDetectionContext) {\n    // This function is really part of the evaluateImmediate_CallReadWithDependencyDetection logic.\n    // You'd never call it from anywhere else. Factoring it out means that evaluateImmediate_CallReadWithDependencyDetection\n    // can be independent of try/finally blocks, which contributes to saving about 40% off the CPU\n    // overhead of computed evaluation (on V8 at least).\n\n    try {\n      const readFunction = state.readFunction\n      return state.evaluatorFunctionTarget ? readFunction.call(state.evaluatorFunctionTarget) : readFunction()\n    } finally {\n      dependencyDetection.end()\n\n      // For each subscription no longer being used, remove it from the active subscriptions list and dispose it\n      if (dependencyDetectionContext.disposalCount && !state.isSleeping) {\n        objectForEach(dependencyDetectionContext.disposalCandidates, computedDisposeDependencyCallback)\n      }\n\n      state.isStale = state.isDirty = false\n    }\n  },\n  peek(forceEvaluate) {\n    // Peek won't ordinarily re-evaluate, except while the computed is sleeping\n    //  or to get the initial value when \"deferEvaluation\" is set.\n    const state = this[computedState]\n    if (\n      (state.isDirty && (forceEvaluate || !state.dependenciesCount))\n      || (state.isSleeping && this.haveDependenciesChanged())\n    ) {\n      this.evaluateImmediate()\n    }\n    return state.latestValue\n  },\n\n  get [LATEST_VALUE]() {\n    return this.peek()\n  },\n\n  limit(limitFunction) {\n    const state = this[computedState]\n    // Override the limit function with one that delays evaluation as well\n    ;(subscribable.fn as any).limit.call(this, limitFunction)\n    Object.assign(this, {\n      _evalIfChanged() {\n        if (!this[computedState].isSleeping) {\n          if (this[computedState].isStale) {\n            this.evaluateImmediate()\n          } else {\n            this[computedState].isDirty = false\n          }\n        }\n        return state.latestValue\n      },\n      _evalDelayed(isChange) {\n        this._limitBeforeChange(state.latestValue)\n\n        // Mark as dirty\n        state.isDirty = true\n        if (isChange) {\n          state.isStale = true\n        }\n\n        // Pass the observable to the \"limit\" code, which will evaluate it when\n        // it's time to do the notification.\n        this._limitChange(this, !isChange /* isDirty */)\n      }\n    })\n  },\n  dispose() {\n    const state = this[computedState]\n    if (!state.isSleeping && state.dependencyTracking) {\n      objectForEach(state.dependencyTracking, function (id, dependency) {\n        if (dependency.dispose) {\n          dependency.dispose()\n        }\n      })\n    }\n    if (state.disposeWhenNodeIsRemoved && state.domNodeDisposalCallback) {\n      removeDisposeCallback(state.disposeWhenNodeIsRemoved, state.domNodeDisposalCallback)\n    }\n    Object.assign(state, DISPOSED_STATE)\n  }\n}\n\nconst pureComputedOverrides = {\n  beforeSubscriptionAdd(event: string) {\n    // If asleep, wake up the computed by subscribing to any dependencies.\n    const computedObservable = this,\n      state = computedObservable[computedState]\n    if (!state.isDisposed && state.isSleeping && event === 'change') {\n      state.isSleeping = false\n      if (state.isStale || computedObservable.haveDependenciesChanged()) {\n        state.dependencyTracking = null\n        state.dependenciesCount = 0\n        if (computedObservable.evaluateImmediate()) {\n          computedObservable.updateVersion()\n        }\n      } else {\n        // First put the dependencies in order\n        const dependenciesOrder = new Array()\n        objectForEach(state.dependencyTracking, function (id, dependency) {\n          dependenciesOrder[dependency._order] = id\n        })\n        // Next, subscribe to each one\n        arrayForEach(dependenciesOrder, function (id, order) {\n          const dependency = state.dependencyTracking[id],\n            subscription = computedObservable.subscribeToDependency(dependency._target)\n          subscription._order = order\n          subscription._version = dependency._version\n          state.dependencyTracking[id] = subscription\n        })\n\n        // Waking dependencies may have triggered effects\n        if (computedObservable.haveDependenciesChanged()) {\n          if (computedObservable.evaluateImmediate()) {\n            computedObservable.updateVersion()\n          }\n        }\n      }\n\n      if (!state.isDisposed) {\n        // test since evaluating could trigger disposal\n        computedObservable.notifySubscribers(state.latestValue, 'awake')\n      }\n    }\n  },\n  afterSubscriptionRemove(event: string) {\n    const state = this[computedState]\n    if (!state.isDisposed && event === 'change' && !this.hasSubscriptionsForEvent('change')) {\n      objectForEach(state.dependencyTracking, function (id, dependency) {\n        if (dependency.dispose) {\n          state.dependencyTracking[id] = {\n            _target: dependency._target,\n            _order: dependency._order,\n            _version: dependency._version\n          }\n          dependency.dispose()\n        }\n      })\n      state.isSleeping = true\n      this.notifySubscribers(undefined, 'asleep')\n    }\n  },\n  getVersion() {\n    // Because a pure computed is not automatically updated while it is sleeping, we can't\n    // simply return the version number. Instead, we check if any of the dependencies have\n    // changed and conditionally re-evaluate the computed observable.\n    const state = this[computedState]\n    if (state.isSleeping && (state.isStale || this.haveDependenciesChanged())) {\n      this.evaluateImmediate()\n    }\n    return subscribable.fn.getVersion.call(this)\n  }\n}\n\nconst deferEvaluationOverrides = {\n  beforeSubscriptionAdd(event) {\n    // This will force a computed with deferEvaluation to evaluate when the first subscription is registered.\n    if (event === 'change' || event === 'beforeChange') {\n      this.peek()\n    }\n  }\n}\n\nObject.setPrototypeOf(computed.fn, subscribable.fn)\n\n// Set the proto values for ko.computed\nconst protoProp = observable.protoProperty // == \"__ko_proto__\"\ncomputed.fn[protoProp] = computed\n\n/* This is used by ko.isObservable */\nobservable.observablePrototypes.add(computed as any)\n\nexport function isComputed<T = any>(instance: any): instance is Computed<T> {\n  return typeof instance === 'function' && instance[protoProp] === computed\n}\n\nexport function isPureComputed<T = any>(instance: any): instance is PureComputed<T> {\n  return isComputed(instance) && instance[computedState] && (instance[computedState] as unknown as State).pure\n}\n\nexport function pureComputed<T = any>(\n  evaluatorFunctionOrOptions: ComputedOptions | ComputedReadFunction,\n  evaluatorFunctionTarget?\n): Computed<T> {\n  if (typeof evaluatorFunctionOrOptions === 'function') {\n    const evaluator = evaluatorFunctionOrOptions as ComputedReadFunction\n    return computed(evaluator, evaluatorFunctionTarget, { pure: true })\n  } else {\n    let options = evaluatorFunctionOrOptions as ComputedOptions\n    options = extend({}, options) // make a copy of the parameter object\n    options.pure = true\n    return computed(options, evaluatorFunctionTarget)\n  }\n}\n"],
+  "mappings": 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+  "names": ["options", "subscribable"]
 }

dist/index.cjs

@@ -1,2 +0,3 @@
-// @tko/computed 🥊 4.0.0-beta1.3 CommonJS
+// @tko/computed 🥊 4.0.0 CommonJS
+"use strict";
 var __defProp = Object.defineProperty;
@@ -6,2 +7,6 @@ var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
 var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __knownSymbol = (name, symbol) => (symbol = Symbol[name]) ? symbol : /* @__PURE__ */ Symbol.for("Symbol." + name);
+var __typeError = (msg) => {
+  throw TypeError(msg);
+};
 var __export = (target, all) => {
@@ -20,6 +25,38 @@ for (var name in all)
 var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+var __await = function(promise, isYieldStar) {
+  this[0] = promise;
+  this[1] = isYieldStar;
+};
+var __yieldStar = (value) => {
+  var obj = value[__knownSymbol("asyncIterator")], isAwait = false, method, it = {};
+  if (obj == null) {
+    obj = value[__knownSymbol("iterator")]();
+    method = (k) => it[k] = (x) => obj[k](x);
+  } else {
+    obj = obj.call(value);
+    method = (k) => it[k] = (v) => {
+      if (isAwait) {
+        isAwait = false;
+        if (k === "throw") throw v;
+        return v;
+      }
+      isAwait = true;
+      return {
+        done: false,
+        value: new __await(new Promise((resolve) => {
+          var x = obj[k](v);
+          if (!(x instanceof Object)) __typeError("Object expected");
+          resolve(x);
+        }), 1)
+      };
+    };
+  }
+  return it[__knownSymbol("iterator")] = () => it, method("next"), "throw" in obj ? method("throw") : it.throw = (x) => {
+    throw x;
+  }, "return" in obj && method("return"), it;
+};
 
 // index.ts
-var computed_exports = {};
-__export(computed_exports, {
+var index_exports = {};
+__export(index_exports, {
   computed: () => computed,
@@ -33,9 +70,9 @@ isComputed: () => isComputed,
 });
-module.exports = __toCommonJS(computed_exports);
+module.exports = __toCommonJS(index_exports);
 
 // ../utils/dist/array.js
 var { isArray } = Array;
-function arrayForEach(array, action, thisArg) {
+function arrayForEach(array, action, actionOwner) {
   if (arguments.length > 2) {
-    action = action.bind(thisArg);
+    action = action.bind(actionOwner);
   }
@@ -50,3 +87,3 @@ for (let i = 0, j = array.length; i < j; ++i) {
 function arrayRemoveItem(array, itemToRemove) {
-  var index = arrayIndexOf(array, itemToRemove);
+  const index = arrayIndexOf(array, itemToRemove);
   if (index > 0) {
@@ -60,3 +97,3 @@ array.splice(index, 1);
   if (left.length && right.length) {
-    var failedCompares, l, r, leftItem, rightItem;
+    let failedCompares, l, r, leftItem, rightItem;
     for (failedCompares = l = 0; (!limitFailedCompares || failedCompares < limitFailedCompares) && (leftItem = left[l]); ++l) {
@@ -89,6 +126,6 @@ for (r = 0; rightItem = right[r]; ++r) {
 function compareSmallArrayToBigArray(smlArray, bigArray, statusNotInSml, statusNotInBig, options2) {
-  var myMin = Math.min, myMax = Math.max, editDistanceMatrix = [], smlIndex, smlIndexMax = smlArray.length, bigIndex, bigIndexMax = bigArray.length, compareRange = bigIndexMax - smlIndexMax || 1, maxDistance = smlIndexMax + bigIndexMax + 1, thisRow, lastRow, bigIndexMaxForRow, bigIndexMinForRow;
+  let myMin = Math.min, myMax = Math.max, editDistanceMatrix = new Array(), smlIndex, smlIndexMax = smlArray.length, bigIndex, bigIndexMax = bigArray.length, compareRange = bigIndexMax - smlIndexMax || 1, maxDistance = smlIndexMax + bigIndexMax + 1, thisRow, lastRow, bigIndexMaxForRow, bigIndexMinForRow;
   for (smlIndex = 0; smlIndex <= smlIndexMax; smlIndex++) {
     lastRow = thisRow;
-    editDistanceMatrix.push(thisRow = []);
+    editDistanceMatrix.push(thisRow = new Array());
     bigIndexMaxForRow = myMin(bigIndexMax, smlIndex + compareRange);
@@ -104,4 +141,4 @@ bigIndexMinForRow = myMax(0, smlIndex - 1);
       } else {
-        var northDistance = lastRow[bigIndex] || maxDistance;
-        var westDistance = thisRow[bigIndex - 1] || maxDistance;
+        const northDistance = lastRow[bigIndex] || maxDistance;
+        const westDistance = thisRow[bigIndex - 1] || maxDistance;
         thisRow[bigIndex] = myMin(northDistance, westDistance) + 1;
@@ -111,25 +148,28 @@ }
   }
-  var editScript = [], meMinusOne, notInSml = [], notInBig = [];
+  let editScript = new Array(), meMinusOne, notInSml = new Array(), notInBig = new Array();
   for (smlIndex = smlIndexMax, bigIndex = bigIndexMax; smlIndex || bigIndex; ) {
     meMinusOne = editDistanceMatrix[smlIndex][bigIndex] - 1;
     if (bigIndex && meMinusOne === editDistanceMatrix[smlIndex][bigIndex - 1]) {
-      notInSml.push(editScript[editScript.length] = {
-        "status": statusNotInSml,
-        "value": bigArray[--bigIndex],
-        "index": bigIndex
-      });
+      notInSml.push(
+        editScript[editScript.length] = {
+          // added
+          status: statusNotInSml,
+          value: bigArray[--bigIndex],
+          index: bigIndex
+        }
+      );
     } else if (smlIndex && meMinusOne === editDistanceMatrix[smlIndex - 1][bigIndex]) {
-      notInBig.push(editScript[editScript.length] = {
-        "status": statusNotInBig,
-        "value": smlArray[--smlIndex],
-        "index": smlIndex
-      });
+      notInBig.push(
+        editScript[editScript.length] = {
+          // deleted
+          status: statusNotInBig,
+          value: smlArray[--smlIndex],
+          index: smlIndex
+        }
+      );
     } else {
       --bigIndex;
       --smlIndex;
-      if (!options2.sparse) {
-        editScript.push({
-          "status": "retained",
-          "value": bigArray[bigIndex]
-        });
+      if (!(options2 == null ? void 0 : options2.sparse)) {
+        editScript.push({ status: "retained", value: bigArray[bigIndex] });
       }
@@ -143,36 +183,75 @@ }
 // ../utils/dist/options.js
-var options = {
-  deferUpdates: false,
-  useOnlyNativeEvents: false,
-  protoProperty: "__ko_proto__",
-  defaultBindingAttribute: "data-bind",
-  allowVirtualElements: true,
-  bindingGlobals: /* @__PURE__ */ Object.create(null),
-  bindingProviderInstance: null,
-  createChildContextWithAs: false,
-  jQuery: globalThis.jQuery,
-  Promise: globalThis.Promise,
-  taskScheduler: null,
-  debug: false,
-  global: globalThis,
-  document: globalThis.document,
-  filters: {},
-  includeDestroyed: false,
-  foreachHidesDestroyed: false,
-  onError: function(e) {
-    throw e;
-  },
-  set: function(name, value) {
-    options[name] = value;
-  },
-  getBindingHandler() {
-  },
-  cleanExternalData() {
+var Options = class {
+  constructor() {
+    this.bindingStringPreparsers = [];
+    this.knockoutInstance = null;
+    this.deferUpdates = false;
+    this.useOnlyNativeEvents = true;
+    this.useTemplateTag = true;
+    this.protoProperty = "__ko_proto__";
+    this.defaultBindingAttribute = "data-bind";
+    this.allowVirtualElements = true;
+    this.bindingGlobals = /* @__PURE__ */ Object.create(null);
+    this.createChildContextWithAs = false;
+    this.disableJQueryUsage = false;
+    this.Promise = globalThis.Promise;
+    this.taskScheduler = null;
+    this.debug = false;
+    this.templateSizeLimit = 4096;
+    this.allowScriptTagsInTemplates = false;
+    this._sanitizeWarningLogged = false;
+    this.global = globalThis;
+    this.document = globalThis.document;
+    this.filters = {};
+    this.includeDestroyed = false;
+    this.foreachHidesDestroyed = false;
   }
+  get jQuery() {
+    var _a;
+    if (this.disableJQueryUsage) return;
+    return (_a = this._jQuery) != null ? _a : globalThis.jQuery;
+  }
+  /**
+   * Set jQuery manuall to be used by TKO.
+   * @param jQuery If jQuery set to undefined, TKO will not use jQuery and this.disableJQueryUsage to true.
+   */
+  set jQuery(jQuery) {
+    if (!jQuery) {
+      this.disableJQueryUsage = true;
+      this._jQuery = void 0;
+    } else {
+      this._jQuery = jQuery;
+      this.disableJQueryUsage = false;
+    }
+  }
+  /**
+   * Sanitize HTML templates before parsing them. Default is a no-op.
+   * Please configure something like DOMPurify or validator.js for your environment.
+   * @param html HTML string to be sanitized
+   * @returns Sanitized HTML string
+   */
+  sanitizeHtmlTemplate(html) {
+    if (!this._sanitizeWarningLogged) {
+      console.warn(
+        "WARNING -- You don't have a HTML sanitizer configured. Please configure options.sanitizeHtmlTemplate to avoid XSS vulnerabilities."
+      );
+      this._sanitizeWarningLogged = true;
+    }
+    return html;
+  }
+  onError(e, throws = true) {
+    if (throws) throw e;
+    return e;
+  }
+  set(name, value) {
+    this[name] = value;
+  }
+  // Overload getBindingHandler to have a custom lookup function.
+  getBindingHandler(key) {
+    return null;
+  }
+  cleanExternalData(node, callback) {
+  }
 };
-Object.defineProperty(options, "$", {
-  get: function() {
-    return options.jQuery;
-  }
-});
+var options = new Options();
 var options_default = options;
@@ -204,3 +283,3 @@
 function throttle(callback, timeout) {
-  var timeoutInstance;
+  let timeoutInstance;
   return function(...args) {
@@ -216,3 +295,3 @@ if (!timeoutInstance) {
 function debounce(callback, timeout) {
-  var timeoutInstance;
+  let timeoutInstance;
   return function(...args) {
@@ -224,14 +303,2 @@ clearTimeout(timeoutInstance);
 
-// ../utils/dist/ie.js
-var ieVersion = options_default.document && function() {
-  var version = 3, div = options_default.document.createElement("div"), iElems = div.getElementsByTagName("i");
-  while (div.innerHTML = "<!--[if gt IE " + ++version + "]><i></i><![endif]-->", iElems[0]) {
-  }
-  if (!version) {
-    const userAgent = window.navigator.userAgent;
-    return ua.match(/MSIE ([^ ]+)/) || ua.match(/rv:([^ )]+)/);
-  }
-  return version > 4 ? version : void 0;
-}();
-
 // ../utils/dist/object.js
@@ -243,4 +310,5 @@ function hasOwnProperty(obj, propName) {
   if (source) {
-    for (var prop in source) {
+    for (const prop of Object.keys(source)) {
       if (hasOwnProperty(source, prop)) {
+        ;
         target[prop] = source[prop];
@@ -253,3 +321,3 @@ }
 function objectForEach(obj, action) {
-  for (var prop in obj) {
+  for (const prop in obj) {
     if (hasOwnProperty(obj, prop)) {
@@ -284,5 +352,2 @@ action(prop, obj[prop]);
 
-// ../utils/dist/jquery.js
-var jQueryInstance = options_default.global && options_default.global.jQuery;
-
 // ../utils/dist/dom/info.js
@@ -293,7 +358,7 @@ function domNodeIsContainedBy(node, containedByNode) {
   }
-  if (node.nodeType === 11) {
+  if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
     return false;
   }
   if (containedByNode.contains) {
-    return containedByNode.contains(node.nodeType !== 1 ? node.parentNode : node);
+    return containedByNode.contains(node.nodeType !== Node.ELEMENT_NODE ? node.parentNode : node);
   }
@@ -303,6 +368,7 @@ if (containedByNode.compareDocumentPosition) {
   }
-  while (node && node != containedByNode) {
-    node = node.parentNode;
+  let parentNode = node;
+  while (parentNode && parentNode != containedByNode) {
+    parentNode = parentNode.parentNode;
   }
-  return !!node;
+  return !!parentNode;
 }
@@ -316,48 +382,40 @@ function domNodeIsAttachedToDocument(node) {
 
+// ../utils/dist/dom/event.js
+var knownEvents = {};
+var knownEventTypesByEventName = {};
+knownEvents["UIEvents"] = ["keyup", "keydown", "keypress"];
+knownEvents["MouseEvents"] = [
+  "click",
+  "dblclick",
+  "mousedown",
+  "mouseup",
+  "mousemove",
+  "mouseover",
+  "mouseout",
+  "mouseenter",
+  "mouseleave"
+];
+objectForEach(knownEvents, function(eventType, knownEventsForType) {
+  if (knownEventsForType.length) {
+    for (let i = 0, j = knownEventsForType.length; i < j; i++) {
+      knownEventTypesByEventName[knownEventsForType[i]] = eventType;
+    }
+  }
+});
+
 // ../utils/dist/dom/data.js
-var datastoreTime = new Date().getTime();
+var datastoreTime = (/* @__PURE__ */ new Date()).getTime();
 var dataStoreKeyExpandoPropertyName = `__ko__${datastoreTime}`;
-var dataStoreSymbol = Symbol("Knockout data");
-var dataStore;
+var dataStoreSymbol = /* @__PURE__ */ Symbol("Knockout data");
 var uniqueId = 0;
-var modern = {
-  getDataForNode(node, createIfNotFound) {
-    let dataForNode = node[dataStoreSymbol];
-    if (!dataForNode && createIfNotFound) {
-      dataForNode = node[dataStoreSymbol] = {};
-    }
-    return dataForNode;
-  },
-  clear(node) {
-    if (node[dataStoreSymbol]) {
-      delete node[dataStoreSymbol];
-      return true;
-    }
-    return false;
+function isSafeKey(key) {
+  return key !== "__proto__" && key !== "constructor" && key !== "prototype";
+}
+function getDataForNode(node, createIfNotFound) {
+  let dataForNode = node[dataStoreSymbol];
+  if (!dataForNode && createIfNotFound) {
+    dataForNode = node[dataStoreSymbol] = {};
   }
-};
-var IE = {
-  getDataforNode(node, createIfNotFound) {
-    let dataStoreKey = node[dataStoreKeyExpandoPropertyName];
-    const hasExistingDataStore = dataStoreKey && dataStoreKey !== "null" && dataStore[dataStoreKey];
-    if (!hasExistingDataStore) {
-      if (!createIfNotFound) {
-        return void 0;
-      }
-      dataStoreKey = node[dataStoreKeyExpandoPropertyName] = "ko" + uniqueId++;
-      dataStore[dataStoreKey] = {};
-    }
-    return dataStore[dataStoreKey];
-  },
-  clear(node) {
-    const dataStoreKey = node[dataStoreKeyExpandoPropertyName];
-    if (dataStoreKey) {
-      delete dataStore[dataStoreKey];
-      node[dataStoreKeyExpandoPropertyName] = null;
-      return true;
-    }
-    return false;
-  }
-};
-var { getDataForNode, clear } = ieVersion ? IE : modern;
+  return dataForNode;
+}
 function nextKey() {
@@ -367,2 +425,3 @@ return uniqueId++ + dataStoreKeyExpandoPropertyName;
 function get(node, key) {
+  if (!isSafeKey(key)) throw new Error("Unsafe key for DOM data: " + key);
   const dataForNode = getDataForNode(node, false);
@@ -372,4 +431,11 @@ return dataForNode && dataForNode[key];
 function set(node, key, value) {
-  var dataForNode = getDataForNode(node, value !== void 0);
-  dataForNode && (dataForNode[key] = value);
+  if (!isSafeKey(key)) throw new Error("Unsafe key for DOM data: " + key);
+  const dataForNode = getDataForNode(
+    node,
+    value !== void 0
+    /* createIfNotFound */
+  );
+  if (dataForNode) {
+    dataForNode[key] = value;
+  }
 }
@@ -380,5 +446,5 @@
 function getDisposeCallbacksCollection(node, createIfNotFound) {
-  var allDisposeCallbacks = get(node, domDataKey);
+  let allDisposeCallbacks = get(node, domDataKey);
   if (allDisposeCallbacks === void 0 && createIfNotFound) {
-    allDisposeCallbacks = [];
+    allDisposeCallbacks = new Array();
     set(node, domDataKey, allDisposeCallbacks);
@@ -398,3 +464,3 @@ }
 function removeDisposeCallback(node, callback) {
-  var callbacksCollection = getDisposeCallbacksCollection(node, false);
+  const callbacksCollection = getDisposeCallbacksCollection(node, false);
   if (callbacksCollection) {
@@ -407,5 +473,5 @@ arrayRemoveItem(callbacksCollection, callback);
 }
-var otherNodeCleanerFunctions = [];
+var otherNodeCleanerFunctions = new Array();
 function cleanjQueryData(node) {
-  var jQueryCleanNodeFn = jQueryInstance ? jQueryInstance.cleanData : null;
+  const jQueryCleanNodeFn = options_default.jQuery ? options_default.jQuery.cleanData : null;
   if (jQueryCleanNodeFn) {
@@ -417,34 +483,7 @@ jQueryCleanNodeFn([node]);
 
-// ../utils/dist/dom/event.js
-var knownEvents = {};
-var knownEventTypesByEventName = {};
-var keyEventTypeName = options_default.global.navigator && /Firefox\/2/i.test(options_default.global.navigator.userAgent) ? "KeyboardEvent" : "UIEvents";
-knownEvents[keyEventTypeName] = ["keyup", "keydown", "keypress"];
-knownEvents["MouseEvents"] = [
-  "click",
-  "dblclick",
-  "mousedown",
-  "mouseup",
-  "mousemove",
-  "mouseover",
-  "mouseout",
-  "mouseenter",
-  "mouseleave"
-];
-objectForEach(knownEvents, function(eventType, knownEventsForType) {
-  if (knownEventsForType.length) {
-    for (var i = 0, j = knownEventsForType.length; i < j; i++) {
-      knownEventTypesByEventName[knownEventsForType[i]] = eventType;
-    }
-  }
-});
-
-// ../utils/dist/dom/virtualElements.js
-var commentNodesHaveTextProperty = options_default.document && options_default.document.createComment("test").text === "<!--test-->";
-
 // ../utils/dist/dom/html.js
-var supportsTemplateTag = options_default.document && "content" in options_default.document.createElement("template");
+var supportsTemplateTag = options_default.useTemplateTag && options_default.document && "content" in options_default.document.createElement("template");
 
 // ../utils/dist/dom/selectExtensions.js
-var hasDomDataExpandoProperty = Symbol("Knockout selectExtensions hasDomDataProperty");
+var hasDomDataExpandoProperty = /* @__PURE__ */ Symbol("Knockout selectExtensions hasDomDataProperty");
 var selectExtensions = {
@@ -454,3 +493,3 @@ optionValueDomDataKey: nextKey(),
     switch (tagNameLower(element)) {
-      case "option":
+      case "option": {
         if (element[hasDomDataExpandoProperty] === true) {
@@ -460,4 +499,7 @@ return get(element, selectExtensions.optionValueDomDataKey);
         return element.value;
-      case "select":
-        return element.selectedIndex >= 0 ? selectExtensions.readValue(element.options[element.selectedIndex]) : void 0;
+      }
+      case "select": {
+        const selectElement = element;
+        return selectElement.selectedIndex >= 0 ? selectExtensions.readValue(selectElement.options[selectElement.selectedIndex]) : void 0;
+      }
       default:
@@ -475,27 +517,32 @@ return element.value;
           }
+          ;
           element.value = value;
         } else {
+          const el = element;
           set(element, selectExtensions.optionValueDomDataKey, value);
-          element[hasDomDataExpandoProperty] = true;
-          element.value = typeof value === "number" ? value : "";
+          el[hasDomDataExpandoProperty] = true;
+          el.value = typeof value === "number" ? value : "";
         }
         break;
       case "select":
-        if (value === "" || value === null) {
-          value = void 0;
-        }
-        var selection = -1;
-        for (let i = 0, n = element.options.length, optionValue; i < n; ++i) {
-          optionValue = selectExtensions.readValue(element.options[i]);
-          const strictEqual = optionValue === value;
-          const blankEqual = optionValue === "" && value === void 0;
-          const numericEqual = typeof value === "number" && Number(optionValue) === value;
-          if (strictEqual || blankEqual || numericEqual) {
-            selection = i;
-            break;
+        {
+          if (value === "" || value === null) {
+            value = void 0;
           }
+          let selection = -1;
+          const selectElement = element;
+          for (let i = 0, n = selectElement.options.length, optionValue; i < n; ++i) {
+            optionValue = selectExtensions.readValue(selectElement.options[i]);
+            const strictEqual = optionValue === value;
+            const blankEqual = optionValue === "" && value === void 0;
+            const numericEqual = typeof value === "number" && Number(optionValue) === value;
+            if (strictEqual || blankEqual || numericEqual) {
+              selection = i;
+              break;
+            }
+          }
+          if (allowUnset || selection >= 0 || value === void 0 && selectElement.size > 1) {
+            selectElement.selectedIndex = selection;
+          }
         }
-        if (allowUnset || selection >= 0 || value === void 0 && element.size > 1) {
-          element.selectedIndex = selection;
-        }
         break;
@@ -506,2 +553,3 @@ default:
         }
+        ;
         element.value = value;
@@ -521,3 +569,3 @@ break;
 });
-var taskQueue = [];
+var taskQueue = new Array();
 var taskQueueLength = 0;
@@ -528,4 +576,4 @@ var nextHandle = 1;
 if (w && w.MutationObserver && !(w.navigator && w.navigator.standalone)) {
-  options_default.taskScheduler = function(callback) {
-    var div = w.document.createElement("div");
+  options_default.taskScheduler = (function(callback) {
+    const div = w.document.createElement("div");
     new w.MutationObserver(callback).observe(div, { attributes: true });
@@ -535,14 +583,3 @@ return function() {
     };
-  }(scheduledProcess);
-} else if (w && w.document && "onreadystatechange" in w.document.createElement("script")) {
-  options_default.taskScheduler = function(callback) {
-    var script = document.createElement("script");
-    script.onreadystatechange = function() {
-      script.onreadystatechange = null;
-      document.documentElement.removeChild(script);
-      script = null;
-      callback();
-    };
-    document.documentElement.appendChild(script);
-  };
+  })(scheduledProcess);
 } else {
@@ -555,4 +592,4 @@ options_default.taskScheduler = function(callback) {
   if (taskQueueLength) {
-    var mark = taskQueueLength, countMarks = 0;
-    for (var task; nextIndexToProcess < taskQueueLength; ) {
+    let mark = taskQueueLength, countMarks = 0;
+    for (let task; nextIndexToProcess < taskQueueLength; ) {
       if (task = taskQueue[nextIndexToProcess++]) {
@@ -591,3 +628,3 @@ if (nextIndexToProcess > mark) {
 function cancel(handle) {
-  var index = handle - (nextHandle - taskQueueLength);
+  const index = handle - (nextHandle - taskQueueLength);
   if (index >= nextIndexToProcess && index < taskQueueLength) {
@@ -598,3 +635,3 @@ taskQueue[index] = null;
 function resetForTesting() {
-  var length = taskQueueLength - nextIndexToProcess;
+  const length = taskQueueLength - nextIndexToProcess;
   nextIndexToProcess = taskQueueLength = taskQueue.length = 0;
@@ -618,3 +655,3 @@ return length;
 // ../observable/dist/subscribableSymbol.js
-var SUBSCRIBABLE_SYM = Symbol("Knockout Subscribable");
+var SUBSCRIBABLE_SYM = /* @__PURE__ */ Symbol("Knockout Subscribable");
 function isSubscribable(instance) {
@@ -625,3 +662,3 @@ return instance && instance[SUBSCRIBABLE_SYM] || false;
 // ../observable/dist/dependencyDetection.js
-var outerFrames = [];
+var outerFrames = new Array();
 var currentFrame;
@@ -644,3 +681,7 @@ var lastId = 0;
     }
-    currentFrame.callback.call(currentFrame.callbackTarget, subscribable2, subscribable2._id || (subscribable2._id = getId()));
+    currentFrame.callback.call(
+      currentFrame.callbackTarget,
+      subscribable2,
+      subscribable2._id || (subscribable2._id = getId())
+    );
   }
@@ -660,2 +701,3 @@ }
   }
+  return void 0;
 }
@@ -666,2 +708,3 @@ function getDependencies() {
   }
+  return void 0;
 }
@@ -672,2 +715,3 @@ function isInitial() {
   }
+  return void 0;
 }
@@ -719,2 +763,3 @@
   }
+  // TC39 Observable API
   unsubscribe() {
@@ -729,17 +774,12 @@ this.dispose();
 // ../observable/dist/extenders.js
-var primitiveTypes = {
-  "undefined": 1,
-  "boolean": 1,
-  "number": 1,
-  "string": 1
-};
+var primitiveTypes = { undefined: 1, boolean: 1, number: 1, string: 1 };
 function valuesArePrimitiveAndEqual(a, b) {
-  var oldValueIsPrimitive = a === null || typeof a in primitiveTypes;
+  const oldValueIsPrimitive = a === null || typeof a in primitiveTypes;
   return oldValueIsPrimitive ? a === b : false;
 }
 function applyExtenders(requestedExtenders) {
-  var target = this;
+  let target = this;
   if (requestedExtenders) {
     objectForEach(requestedExtenders, function(key, value) {
-      var extenderHandler = extenders[key];
+      const extenderHandler = extenders[key];
       if (typeof extenderHandler === "function") {
@@ -759,3 +799,5 @@ target = extenderHandler(target, value) || target;
   if (option !== true) {
-    throw new Error("The 'deferred' extender only accepts the value 'true', because it is not supported to turn deferral off once enabled.");
+    throw new Error(
+      "The 'deferred' extender only accepts the value 'true', because it is not supported to turn deferral off once enabled."
+    );
   }
@@ -765,3 +807,3 @@ deferUpdates(target);
 function rateLimit(target, options2) {
-  var timeout, method, limitFunction;
+  let timeout, method, limitFunction;
   if (typeof options2 === "number") {
@@ -779,17 +821,13 @@ timeout = options2;
 }
-var extenders = {
-  notify,
-  deferred,
-  rateLimit
-};
+var extenders = { notify, deferred, rateLimit };
 
 // ../observable/dist/subscribable.js
-var LATEST_VALUE = Symbol("Knockout latest value");
+var LATEST_VALUE = /* @__PURE__ */ Symbol("Knockout latest value");
 if (!Symbol.observable) {
-  Symbol.observable = Symbol.for("@tko/Symbol.observable");
+  Symbol.observable = /* @__PURE__ */ Symbol.for("@tko/Symbol.observable");
 }
-function subscribable() {
+var subscribable = function subscribableFactory() {
   Object.setPrototypeOf(this, ko_subscribable_fn);
   ko_subscribable_fn.init(this);
-}
+};
 var defaultEvent = "change";
@@ -808,5 +846,3 @@ var ko_subscribable_fn = {
     event = event || defaultEvent;
-    const observer = isTC39Callback ? callback : {
-      next: callbackTarget ? callback.bind(callbackTarget) : callback
-    };
+    const observer = isTC39Callback ? callback : { next: callbackTarget ? callback.bind(callbackTarget) : callback };
     const subscriptionInstance = new Subscription(this, observer, () => {
@@ -822,3 +858,3 @@ arrayRemoveItem(this._subscriptions[event], subscriptionInstance);
     if (!this._subscriptions[event]) {
-      this._subscriptions[event] = [];
+      this._subscriptions[event] = new Array();
     }
@@ -866,3 +902,3 @@ this._subscriptions[event].push(subscriptionInstance);
     } else {
-      var total = 0;
+      let total = 0;
       objectForEach(this._subscriptions, function(eventName, subscriptions) {
@@ -922,2 +958,3 @@ if (eventName !== "dirty") {
       if (Observable.isDifferent(Observable[LATEST_VALUE], arguments[0])) {
+        ;
         Observable.valueWillMutate();
@@ -943,6 +980,19 @@ Observable[LATEST_VALUE] = arguments[0];
 observable.fn = {
+  /**
+   * Compares two values for equality.
+   * @param a The first value.
+   * @param b The second value.
+   * @returns True if the values are equal, otherwise false.
+   */
   equalityComparer: valuesArePrimitiveAndEqual,
+  /**
+   * Returns the current value of the observable without creating a dependency.
+   * @returns The current value.
+   */
   peek() {
     return this[LATEST_VALUE];
   },
+  /**
+   * Notifies subscribers that the value has changed.
+   */
   valueHasMutated() {
@@ -952,8 +1002,18 @@ this.notifySubscribers(this[LATEST_VALUE], "spectate");
   },
+  /**
+   * Notifies subscribers that the value is about to change.
+   */
   valueWillMutate() {
     this.notifySubscribers(this[LATEST_VALUE], "beforeChange");
   },
+  /**
+   * Modifies the value of the observable using a function.
+   * @param fn The function to modify the value.
+   * @param peek Whether to use the current value without creating a dependency.
+   * @returns The modified observable.
+   */
   modify(fn, peek22 = true) {
-    return this(fn(peek22 ? this.peek() : this()));
+    this(fn(peek22 ? this.peek() : this()));
   },
+  // Some observables may not always be writeable, notably computeds.
   isWriteable: true
@@ -971,6 +1031,6 @@ };
 subscribable.fn.limit = function limit(limitFunction) {
-  var self = this;
-  var selfIsObservable = isObservable(self);
-  var beforeChange = "beforeChange";
-  var ignoreBeforeChange, notifyNextChange, previousValue, pendingValue, didUpdate;
+  const self = this;
+  const selfIsObservable = isObservable(self);
+  const beforeChange = "beforeChange";
+  let ignoreBeforeChange, notifyNextChange, previousValue, pendingValue, didUpdate;
   if (!self._origNotifySubscribers) {
@@ -980,3 +1040,3 @@ self._origNotifySubscribers = self.notifySubscribers;
   }
-  var finish = limitFunction(function() {
+  const finish = limitFunction(function() {
     self._notificationIsPending = false;
@@ -1009,3 +1069,6 @@ if (selfIsObservable && pendingValue === self) {
     _notifyNextChangeIfValueIsDifferent() {
-      if (self.isDifferent(previousValue, self.peek(true))) {
+      if (self.isDifferent(previousValue, self.peek(
+        true
+        /* evaluate */
+      ))) {
         notifyNextChange = true;
@@ -1050,4 +1113,4 @@ }
   let underlyingNotifySubscribersFunction;
-  let underlyingBeforeSubscriptionAddFunction = target.beforeSubscriptionAdd;
-  let underlyingAfterSubscriptionRemoveFunction = target.afterSubscriptionRemove;
+  const underlyingBeforeSubscriptionAddFunction = target.beforeSubscriptionAdd;
+  const underlyingAfterSubscriptionRemoveFunction = target.afterSubscriptionRemove;
   target.beforeSubscriptionAdd = function(event) {
@@ -1089,7 +1152,7 @@ if (underlyingBeforeSubscriptionAddFunction) {
     };
-    var previousContents = [].concat(target.peek() === void 0 ? [] : target.peek());
+    let previousContents = new Array().concat(target.peek() === void 0 ? [] : target.peek());
     cachedDiff = null;
     arrayChangeSubscription = target.subscribe(function(currentContents) {
       let changes;
-      currentContents = [].concat(currentContents || []);
+      currentContents = new Array().concat(currentContents || []);
       if (target.hasSubscriptionsForEvent(arrayChangeEventName)) {
@@ -1116,5 +1179,5 @@ changes = getChanges(previousContents, currentContents);
     }
-    var diff = [], arrayLength = rawArray.length, argsLength = args.length, offset = 0;
+    let diff = new Array(), arrayLength = rawArray.length, argsLength = args.length, offset = 0;
     function pushDiff(status, value, index) {
-      return diff[diff.length] = { "status": status, "value": value, "index": index };
+      return diff[diff.length] = { status, value, index };
     }
@@ -1137,12 +1200,14 @@ switch (operationName) {
       case "splice":
-        var startIndex = Math.min(Math.max(0, args[0] < 0 ? arrayLength + args[0] : args[0]), arrayLength), endDeleteIndex = argsLength === 1 ? arrayLength : Math.min(startIndex + (args[1] || 0), arrayLength), endAddIndex = startIndex + argsLength - 2, endIndex = Math.max(endDeleteIndex, endAddIndex), additions = [], deletions = [];
-        for (let index = startIndex, argsIndex = 2; index < endIndex; ++index, ++argsIndex) {
-          if (index < endDeleteIndex) {
-            deletions.push(pushDiff("deleted", rawArray[index], index));
+        {
+          const startIndex = Math.min(Math.max(0, args[0] < 0 ? arrayLength + args[0] : args[0]), arrayLength), endDeleteIndex = argsLength === 1 ? arrayLength : Math.min(startIndex + (args[1] || 0), arrayLength), endAddIndex = startIndex + argsLength - 2, endIndex = Math.max(endDeleteIndex, endAddIndex), additions = new Array(), deletions = new Array();
+          for (let index = startIndex, argsIndex = 2; index < endIndex; ++index, ++argsIndex) {
+            if (index < endDeleteIndex) {
+              deletions.push(pushDiff("deleted", rawArray[index], index));
+            }
+            if (index < endAddIndex) {
+              additions.push(pushDiff("added", args[argsIndex], index));
+            }
           }
-          if (index < endAddIndex) {
-            additions.push(pushDiff("added", args[argsIndex], index));
-          }
+          findMovesInArrayComparison(deletions, additions);
         }
-        findMovesInArrayComparison(deletions, additions);
         break;
@@ -1162,8 +1227,12 @@ default:
   if (typeof initialValues !== "object" || !("length" in initialValues)) {
-    throw new Error("The argument passed when initializing an observable array must be an array, or null, or undefined.");
+    throw new Error(
+      "The argument passed when initializing an observable array must be an array, or null, or undefined."
+    );
   }
-  var result = observable(initialValues);
-  Object.setPrototypeOf(result, observableArray.fn);
+  const result = Object.setPrototypeOf(observable(initialValues), observableArray.fn);
   trackArrayChanges(result);
-  overwriteLengthPropertyIfSupported(result, { get: () => result().length });
+  overwriteLengthPropertyIfSupported(result, { get: () => {
+    var _a;
+    return (_a = result()) == null ? void 0 : _a.length;
+  } });
   return result;
@@ -1173,9 +1242,9 @@ }
   remove(valueOrPredicate) {
-    var underlyingArray = this.peek();
-    var removedValues = [];
-    var predicate = typeof valueOrPredicate === "function" && !isObservable(valueOrPredicate) ? valueOrPredicate : function(value2) {
-      return value2 === valueOrPredicate;
+    const underlyingArray = this.peek();
+    const removedValues = new Array();
+    const predicate = typeof valueOrPredicate === "function" && !isObservable(valueOrPredicate) ? valueOrPredicate : function(value) {
+      return value === valueOrPredicate;
     };
-    for (var i = 0; i < underlyingArray.length; i++) {
-      var value = underlyingArray[i];
+    for (let i = 0; i < underlyingArray.length; i++) {
+      const value = underlyingArray[i];
       if (predicate(value)) {
@@ -1200,4 +1269,4 @@ if (removedValues.length === 0) {
     if (arrayOfValues === void 0) {
-      var underlyingArray = this.peek();
-      var allValues = underlyingArray.slice(0);
+      const underlyingArray = this.peek();
+      const allValues = underlyingArray.slice(0);
       this.valueWillMutate();
@@ -1216,9 +1285,9 @@ underlyingArray.splice(0, underlyingArray.length);
   destroy(valueOrPredicate) {
-    var underlyingArray = this.peek();
-    var predicate = typeof valueOrPredicate === "function" && !isObservable(valueOrPredicate) ? valueOrPredicate : function(value2) {
-      return value2 === valueOrPredicate;
+    const underlyingArray = this.peek();
+    const predicate = typeof valueOrPredicate === "function" && !isObservable(valueOrPredicate) ? valueOrPredicate : function(value) {
+      return value === valueOrPredicate;
     };
     this.valueWillMutate();
-    for (var i = underlyingArray.length - 1; i >= 0; i--) {
-      var value = underlyingArray[i];
+    for (let i = underlyingArray.length - 1; i >= 0; i--) {
+      const value = underlyingArray[i];
       if (predicate(value)) {
@@ -1247,3 +1316,3 @@ value["_destroy"] = true;
   replace(oldItem, newItem) {
-    var index = this.indexOf(oldItem);
+    const index = this.indexOf(oldItem);
     if (index >= 0) {
@@ -1262,3 +1331,3 @@ this.valueWillMutate();
   [Symbol.iterator]: function* () {
-    yield* this();
+    yield* __yieldStar(this());
   }
@@ -1269,6 +1338,6 @@ };
   observableArray.fn[methodName] = function() {
-    var underlyingArray = this.peek();
+    const underlyingArray = this.peek();
     this.valueWillMutate();
     this.cacheDiffForKnownOperation(underlyingArray, methodName, arguments);
-    var methodCallResult = underlyingArray[methodName].apply(underlyingArray, arguments);
+    const methodCallResult = underlyingArray[methodName].apply(underlyingArray, arguments);
     this.valueHasMutated();
@@ -1280,3 +1349,3 @@ return methodCallResult === underlyingArray ? this : methodCallResult;
   observableArray.fn[methodName] = function() {
-    var underlyingArray = this();
+    const underlyingArray = this();
     return underlyingArray[methodName].apply(underlyingArray, arguments);
@@ -1309,7 +1378,7 @@ };
   }
-  if (typeof options2.read !== "function") {
+  if (typeof (options2 == null ? void 0 : options2.read) !== "function") {
     throw Error("Pass a function that returns the value of the computed");
   }
-  var writeFunction = options2.write;
-  var state = {
+  const writeFunction = options2.write;
+  const state = {
     latestValue: void 0,
@@ -1325,4 +1394,4 @@ isStale: true,
     evaluatorFunctionTarget: evaluatorFunctionTarget || options2.owner,
-    disposeWhenNodeIsRemoved: options2.disposeWhenNodeIsRemoved || options2.disposeWhenNodeIsRemoved || null,
-    disposeWhen: options2.disposeWhen || options2.disposeWhen,
+    disposeWhenNodeIsRemoved: options2.disposeWhenNodeIsRemoved || null,
+    disposeWhen: options2.disposeWhen,
     domNodeDisposalCallback: null,
@@ -1338,3 +1407,5 @@ dependencyTracking: {},
       } else {
-        throw new Error("Cannot write a value to a computed unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters.");
+        throw new Error(
+          "Cannot write a value to a computed unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters."
+        );
       }
@@ -1347,2 +1418,3 @@ return this;
       if (state.isDirty || state.isSleeping && computedObservable.haveDependenciesChanged()) {
+        ;
         computedObservable.evaluateImmediate();
@@ -1377,8 +1449,13 @@ }
   if (!state.isSleeping && !options2.deferEvaluation) {
+    ;
     computedObservable.evaluateImmediate();
   }
   if (state.disposeWhenNodeIsRemoved && computedObservable.isActive()) {
-    addDisposeCallback(state.disposeWhenNodeIsRemoved, state.domNodeDisposalCallback = function() {
-      computedObservable.dispose();
-    });
+    addDisposeCallback(
+      state.disposeWhenNodeIsRemoved,
+      state.domNodeDisposalCallback = function() {
+        ;
+        computedObservable.dispose();
+      }
+    );
   }
@@ -1393,3 +1470,3 @@ return computedObservable;
 function computedBeginDependencyDetectionCallback(subscribable2, id) {
-  var computedObservable = this.computedObservable, state = computedObservable[computedState];
+  const computedObservable = this.computedObservable, state = computedObservable[computedState];
   if (!state.isDisposed) {
@@ -1401,3 +1478,7 @@ if (this.disposalCount && this.disposalCandidates[id]) {
     } else if (!state.dependencyTracking[id]) {
-      computedObservable.addDependencyTracking(id, subscribable2, state.isSleeping ? { _target: subscribable2 } : computedObservable.subscribeToDependency(subscribable2));
+      computedObservable.addDependencyTracking(
+        id,
+        subscribable2,
+        state.isSleeping ? { _target: subscribable2 } : computedObservable.subscribeToDependency(subscribable2)
+      );
     }
@@ -1416,3 +1497,3 @@ if (subscribable2._notificationIsPending) {
     const dependencyTracking = this[computedState].dependencyTracking;
-    const dependentObservables = [];
+    const dependentObservables = new Array();
     objectForEach(dependencyTracking, function(id, dependency) {
@@ -1432,3 +1513,3 @@ dependentObservables[dependency._order] = dependency._target;
   haveDependenciesChanged() {
-    var id, dependency, dependencyTracking = this[computedState].dependencyTracking;
+    let id, dependency, dependencyTracking = this[computedState].dependencyTracking;
     for (id in dependencyTracking) {
@@ -1442,6 +1523,10 @@ if (hasOwnProperty(dependencyTracking, id)) {
     }
+    return false;
   },
   markDirty() {
     if (this._evalDelayed && !this[computedState].isBeingEvaluated) {
-      this._evalDelayed(false);
+      this._evalDelayed(
+        false
+        /* notifyChange */
+      );
     }
@@ -1462,3 +1547,3 @@ },
     if (target._deferUpdates) {
-      var dirtySub = target.subscribe(this.markDirty, this, "dirty"), changeSub = target.subscribe(this.respondToChange, this);
+      const dirtySub = target.subscribe(this.markDirty, this, "dirty"), changeSub = target.subscribe(this.respondToChange, this);
       return {
@@ -1476,16 +1561,25 @@ _target: target,
   evaluatePossiblyAsync() {
-    var computedObservable = this, throttleEvaluationTimeout = computedObservable.throttleEvaluation;
+    const computedObservable = this, throttleEvaluationTimeout = computedObservable.throttleEvaluation;
     if (throttleEvaluationTimeout && throttleEvaluationTimeout >= 0) {
       clearTimeout(this[computedState].evaluationTimeoutInstance);
       this[computedState].evaluationTimeoutInstance = safeSetTimeout(function() {
-        computedObservable.evaluateImmediate(true);
+        computedObservable.evaluateImmediate(
+          true
+          /* notifyChange */
+        );
       }, throttleEvaluationTimeout);
     } else if (computedObservable._evalDelayed) {
-      computedObservable._evalDelayed(true);
+      computedObservable._evalDelayed(
+        true
+        /* notifyChange */
+      );
     } else {
-      computedObservable.evaluateImmediate(true);
+      computedObservable.evaluateImmediate(
+        true
+        /* notifyChange */
+      );
     }
   },
   evaluateImmediate(notifyChange) {
-    var computedObservable = this, state = computedObservable[computedState], disposeWhen = state.disposeWhen, changed = false;
+    let computedObservable = this, state = computedObservable[computedState], disposeWhen = state.disposeWhen, changed = false;
     if (state.isBeingEvaluated) {
@@ -1514,4 +1608,4 @@ return;
   evaluateImmediate_CallReadWithDependencyDetection(notifyChange) {
-    var computedObservable = this, state = computedObservable[computedState], changed = false;
-    var isInitial2 = state.pure ? void 0 : !state.dependenciesCount, dependencyDetectionContext = {
+    let computedObservable = this, state = computedObservable[computedState], changed = false;
+    const isInitial2 = state.pure ? void 0 : !state.dependenciesCount, dependencyDetectionContext = {
       computedObservable,
@@ -1529,3 +1623,3 @@ disposalCandidates: state.dependencyTracking,
     state.dependenciesCount = 0;
-    var newValue = this.evaluateImmediate_CallReadThenEndDependencyDetection(state, dependencyDetectionContext);
+    const newValue = this.evaluateImmediate_CallReadThenEndDependencyDetection(state, dependencyDetectionContext);
     if (!state.dependenciesCount) {
@@ -1562,3 +1656,3 @@ computedObservable.dispose();
     try {
-      var readFunction = state.readFunction;
+      const readFunction = state.readFunction;
       return state.evaluatorFunctionTarget ? readFunction.call(state.evaluatorFunctionTarget) : readFunction();
@@ -1603,3 +1697,7 @@ } finally {
         }
-        this._limitChange(this, !isChange);
+        this._limitChange(
+          this,
+          !isChange
+          /* isDirty */
+        );
       }
@@ -1609,3 +1707,3 @@ });
   dispose() {
-    var state = this[computedState];
+    const state = this[computedState];
     if (!state.isSleeping && state.dependencyTracking) {
@@ -1626,3 +1724,3 @@ objectForEach(state.dependencyTracking, function(id, dependency) {
   beforeSubscriptionAdd(event) {
-    var computedObservable = this, state = computedObservable[computedState];
+    const computedObservable = this, state = computedObservable[computedState];
     if (!state.isDisposed && state.isSleeping && event === "change") {
@@ -1637,3 +1735,3 @@ state.isSleeping = false;
       } else {
-        var dependenciesOrder = [];
+        const dependenciesOrder = new Array();
         objectForEach(state.dependencyTracking, function(id, dependency) {
@@ -1643,3 +1741,3 @@ dependenciesOrder[dependency._order] = id;
         arrayForEach(dependenciesOrder, function(id, order) {
-          var dependency = state.dependencyTracking[id], subscription = computedObservable.subscribeToDependency(dependency._target);
+          const dependency = state.dependencyTracking[id], subscription = computedObservable.subscribeToDependency(dependency._target);
           subscription._order = order;
@@ -1661,3 +1759,3 @@ subscription._version = dependency._version;
   afterSubscriptionRemove(event) {
-    var state = this[computedState];
+    const state = this[computedState];
     if (!state.isDisposed && event === "change" && !this.hasSubscriptionsForEvent("change")) {
@@ -1679,3 +1777,3 @@ objectForEach(state.dependencyTracking, function(id, dependency) {
   getVersion() {
-    var state = this[computedState];
+    const state = this[computedState];
     if (state.isSleeping && (state.isStale || this.haveDependenciesChanged())) {
@@ -1706,7 +1804,9 @@ this.evaluateImmediate();
   if (typeof evaluatorFunctionOrOptions === "function") {
-    return computed(evaluatorFunctionOrOptions, evaluatorFunctionTarget, { "pure": true });
+    const evaluator = evaluatorFunctionOrOptions;
+    return computed(evaluator, evaluatorFunctionTarget, { pure: true });
   } else {
-    evaluatorFunctionOrOptions = extend({}, evaluatorFunctionOrOptions);
-    evaluatorFunctionOrOptions.pure = true;
-    return computed(evaluatorFunctionOrOptions, evaluatorFunctionTarget);
+    let options2 = evaluatorFunctionOrOptions;
+    options2 = extend({}, options2);
+    options2.pure = true;
+    return computed(options2, evaluatorFunctionTarget);
   }
@@ -1718,3 +1818,3 @@ }
   target.throttleEvaluation = timeout;
-  var writeTimeoutInstance = null;
+  let writeTimeoutInstance = void 0;
   return computed({
@@ -1730,7 +1830,8 @@ read: target,
 }
-extenders.throttle = throttleExtender;
+var extenders2 = extenders;
+extenders2.throttle = throttleExtender;
 
 // src/proxy.ts
-var PROXY_SYM = Symbol("Knockout Proxied Object");
-var MIRROR_SYM = Symbol("Knockout Proxied Observables");
+var PROXY_SYM = /* @__PURE__ */ Symbol("Knockout Proxied Object");
+var MIRROR_SYM = /* @__PURE__ */ Symbol("Knockout Proxied Observables");
 function makeComputed(proxy2, fn) {
@@ -1802,6 +1903,3 @@ return computed({
     ownKeys() {
-      return [
-        ...Object.getOwnPropertyNames(object),
-        ...Object.getOwnPropertySymbols(object)
-      ];
+      return [...Object.getOwnPropertyNames(object), ...Object.getOwnPropertySymbols(object)];
     }
@@ -1808,0 +1906,0 @@ });

dist/index.js

@@ -1,16 +0,6 @@
-// @tko/computed 🥊 4.0.0-beta1.3 ESM
-export {
-  computed,
-  isComputed,
-  isPureComputed,
-  pureComputed
-} from "./computed";
-export {
-  throttleExtender
-} from "./throttleExtender";
-export {
-  proxy
-} from "./proxy";
-export {
-  when
-} from "./when";
+// @tko/computed 🥊 4.0.0 ESM
+"use strict";
+export { computed, isComputed, isPureComputed, pureComputed } from "./computed";
+export { throttleExtender } from "./throttleExtender";
+export { proxy } from "./proxy";
+export { when } from "./when";

dist/index.js.map

 {
   "version": 3,
   "sources": ["../src/index.ts"],
-  "sourcesContent": ["//\n// tko.computed - Exports\n//\n// knockout -> tko changes:\n//      Deprecates `dependentObservable` (use `computed`)\n//\n\nexport {\n    computed,\n    isComputed,\n    isPureComputed,\n    pureComputed\n} from './computed'\n\nexport {\n    throttleExtender\n} from './throttleExtender'\n\nexport {\n  proxy\n} from './proxy'\n\nexport {\n  when\n} from './when'\n"],
-  "mappings": ";AAOA;AAAA;AAAA;AAAA;AAAA;AAAA;AAOA;AAAA;AAAA;AAIA;AAAA;AAAA;AAIA;AAAA;AAAA;",
+  "sourcesContent": ["//\n// tko.computed - Exports\n//\n// knockout -> tko changes:\n//      Deprecates `dependentObservable` (use `computed`)\n//\n\nexport { computed, isComputed, isPureComputed, pureComputed } from './computed'\n\nexport type { Computed } from './computed'\n\nexport { throttleExtender } from './throttleExtender'\n\nexport { proxy } from './proxy'\n\nexport { when } from './when'\n"],
+  "mappings": ";;AAOA,SAAS,UAAU,YAAY,gBAAgB,oBAAoB;AAInE,SAAS,wBAAwB;AAEjC,SAAS,aAAa;AAEtB,SAAS,YAAY;",
   "names": []
 }

dist/index.mjs

@@ -1,16 +0,6 @@
-// @tko/computed 🥊 4.0.0-beta1.3 MJS
-export {
-  computed,
-  isComputed,
-  isPureComputed,
-  pureComputed
-} from "./computed";
-export {
-  throttleExtender
-} from "./throttleExtender";
-export {
-  proxy
-} from "./proxy";
-export {
-  when
-} from "./when";
+// @tko/computed 🥊 4.0.0 MJS
+"use strict";
+export { computed, isComputed, isPureComputed, pureComputed } from "./computed";
+export { throttleExtender } from "./throttleExtender";
+export { proxy } from "./proxy";
+export { when } from "./when";

dist/index.mjs.map

 {
   "version": 3,
   "sources": ["../src/index.ts"],
-  "sourcesContent": ["//\n// tko.computed - Exports\n//\n// knockout -> tko changes:\n//      Deprecates `dependentObservable` (use `computed`)\n//\n\nexport {\n    computed,\n    isComputed,\n    isPureComputed,\n    pureComputed\n} from './computed'\n\nexport {\n    throttleExtender\n} from './throttleExtender'\n\nexport {\n  proxy\n} from './proxy'\n\nexport {\n  when\n} from './when'\n"],
-  "mappings": ";AAOA;AAAA;AAAA;AAAA;AAAA;AAAA;AAOA;AAAA;AAAA;AAIA;AAAA;AAAA;AAIA;AAAA;AAAA;",
+  "sourcesContent": ["//\n// tko.computed - Exports\n//\n// knockout -> tko changes:\n//      Deprecates `dependentObservable` (use `computed`)\n//\n\nexport { computed, isComputed, isPureComputed, pureComputed } from './computed'\n\nexport type { Computed } from './computed'\n\nexport { throttleExtender } from './throttleExtender'\n\nexport { proxy } from './proxy'\n\nexport { when } from './when'\n"],
+  "mappings": ";;AAOA,SAAS,UAAU,YAAY,gBAAgB,oBAAoB;AAInE,SAAS,wBAAwB;AAEjC,SAAS,aAAa;AAEtB,SAAS,YAAY;",
   "names": []
 }

dist/proxy.js

@@ -1,12 +0,7 @@
-// @tko/computed 🥊 4.0.0-beta1.3 ESM
-import {
-  observable,
-  observableArray,
-  unwrap
-} from "@tko/observable";
-import {
-  computed
-} from "./computed";
-const PROXY_SYM = Symbol("Knockout Proxied Object");
-const MIRROR_SYM = Symbol("Knockout Proxied Observables");
+// @tko/computed 🥊 4.0.0 ESM
+"use strict";
+import { observable, observableArray, unwrap } from "@tko/observable";
+import { computed } from "./computed";
+const PROXY_SYM = /* @__PURE__ */ Symbol("Knockout Proxied Object");
+const MIRROR_SYM = /* @__PURE__ */ Symbol("Knockout Proxied Observables");
 function makeComputed(proxy2, fn) {
@@ -78,6 +73,3 @@ return computed({
     ownKeys() {
-      return [
-        ...Object.getOwnPropertyNames(object),
-        ...Object.getOwnPropertySymbols(object)
-      ];
+      return [...Object.getOwnPropertyNames(object), ...Object.getOwnPropertySymbols(object)];
     }
@@ -84,0 +76,0 @@ });

dist/proxy.js.map

 {
   "version": 3,
   "sources": ["../src/proxy.ts"],
-  "sourcesContent": ["/**\n * Create an ES\n */\n\nimport {\n  observable, observableArray, unwrap\n} from '@tko/observable'\n\nimport {\n  computed\n} from './computed'\n\nconst PROXY_SYM = Symbol('Knockout Proxied Object')\nconst MIRROR_SYM = Symbol('Knockout Proxied Observables')\n\nfunction makeComputed (proxy, fn) {\n  return computed({\n    owner: proxy,\n    read: fn,\n    write: fn,\n    pure: 'pure' in fn ? fn.pure : true,\n    deferEvaluation: 'deferEvaluation' in fn ? fn.deferEvaluation : true\n  }).extend({ deferred: true })\n}\n\nfunction setOrCreate (mirror, prop, value, proxy) {\n  if (!mirror[prop]) {\n    const ctr = Array.isArray(value) ? observableArray\n      : typeof value === 'function' ? makeComputed.bind(null, proxy)\n      : observable\n    mirror[prop] = ctr(value)\n  } else {\n    mirror[prop](value)\n  }\n}\n\nfunction assignOrUpdate(mirror, object, proxy) {\n  for (const key of Object.keys(object)) {\n    setOrCreate(mirror, key, object[key], proxy)\n  }\n  return object\n}\n\nexport function proxy (object) {\n  const mirror = { [PROXY_SYM]: object }\n  mirror[MIRROR_SYM] = mirror\n  const proxy = new Proxy(function () {}, {\n    has (target, prop) { return prop in mirror },\n    get (target, prop) { return unwrap(mirror[prop]) },\n    set (target, prop, value, receiver) {\n      setOrCreate(mirror, prop, value, proxy)\n      object[prop] = value\n      return true\n    },\n    deleteProperty (property) {\n      delete mirror[property]\n      return delete object[property]\n    },\n    apply (target, thisArg, [props]) {\n      if (props) {\n        assignOrUpdate(mirror, props, proxy)\n        return Object.assign(object, props)\n      }\n      return object\n    },\n    getPrototypeOf () { return Object.getPrototypeOf(object) },\n    setPrototypeOf (target, proto) { return Object.setPrototypeOf(object, proto) },\n    defineProperty (target, prop, desc) { return Object.defineProperty(object, prop, desc) },\n    preventExtensions () { return Object.preventExtensions(object) },\n    isExtensible () { return Object.isExtensible(object) },\n    ownKeys () {\n      return [...Object.getOwnPropertyNames(object),\n              ...Object.getOwnPropertySymbols(object)]\n    }\n  })\n  assignOrUpdate(mirror, object, proxy)\n  return proxy\n}\n\nexport function getObservable (proxied, prop) { return proxied[MIRROR_SYM][prop] }\nexport function peek (proxied, prop) { return getObservable(proxied, prop).peek() }\nexport function isProxied (proxied) { return PROXY_SYM in proxied }\n\nObject.assign(proxy, { getObservable, peek, isProxied })\n"],
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-  "names": []
+  "sourcesContent": ["/**\n * Create an ES\n */\n\nimport { observable, observableArray, unwrap } from '@tko/observable'\n\nimport { computed } from './computed'\n\nconst PROXY_SYM = Symbol('Knockout Proxied Object')\nconst MIRROR_SYM = Symbol('Knockout Proxied Observables')\n\nfunction makeComputed(proxy, fn) {\n  return computed({\n    owner: proxy,\n    read: fn,\n    write: fn,\n    pure: 'pure' in fn ? fn.pure : true,\n    deferEvaluation: 'deferEvaluation' in fn ? fn.deferEvaluation : true\n  }).extend({ deferred: true })\n}\n\nfunction setOrCreate(mirror, prop, value, proxy) {\n  if (!mirror[prop]) {\n    const ctr = Array.isArray(value)\n      ? observableArray\n      : typeof value === 'function'\n        ? makeComputed.bind(null, proxy)\n        : observable\n    mirror[prop] = ctr(value)\n  } else {\n    mirror[prop](value)\n  }\n}\n\nfunction assignOrUpdate(mirror, object, proxy) {\n  for (const key of Object.keys(object)) {\n    setOrCreate(mirror, key, object[key], proxy)\n  }\n  return object\n}\n\nexport function proxy(object) {\n  const mirror = { [PROXY_SYM]: object }\n  mirror[MIRROR_SYM] = mirror\n  const proxy = new Proxy(function () {}, {\n    has(target, prop) {\n      return prop in mirror\n    },\n    get(target, prop) {\n      return unwrap(mirror[prop])\n    },\n    set(target, prop, value, receiver) {\n      setOrCreate(mirror, prop, value, proxy)\n      object[prop] = value\n      return true\n    },\n    deleteProperty(property) {\n      delete mirror[property as any]\n      return delete object[property as any]\n    },\n    apply(target, thisArg, [props]) {\n      if (props) {\n        assignOrUpdate(mirror, props, proxy)\n        return Object.assign(object, props)\n      }\n      return object\n    },\n    getPrototypeOf() {\n      return Object.getPrototypeOf(object)\n    },\n    setPrototypeOf(target, proto) {\n      return Object.setPrototypeOf(object, proto)\n    },\n    defineProperty(target, prop, desc) {\n      return Object.defineProperty(object, prop, desc)\n    },\n    preventExtensions() {\n      return Object.preventExtensions(object)\n    },\n    isExtensible() {\n      return Object.isExtensible(object)\n    },\n    ownKeys() {\n      return [...Object.getOwnPropertyNames(object), ...Object.getOwnPropertySymbols(object)]\n    }\n  })\n  assignOrUpdate(mirror, object, proxy)\n  return proxy\n}\n\nexport function getObservable(proxied, prop) {\n  return proxied[MIRROR_SYM][prop]\n}\nexport function peek(proxied, prop) {\n  return getObservable(proxied, prop).peek()\n}\nexport function isProxied(proxied) {\n  return PROXY_SYM in proxied\n}\n\nObject.assign(proxy, { getObservable, peek, isProxied })\n"],
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+  "names": ["proxy"]
 }

dist/throttleExtender.js

@@ -1,11 +0,8 @@
-// @tko/computed 🥊 4.0.0-beta1.3 ESM
-import {
-  extenders
-} from "@tko/observable";
-import {
-  computed
-} from "./computed";
+// @tko/computed 🥊 4.0.0 ESM
+"use strict";
+import { extenders as baseExtenders } from "@tko/observable";
+import { computed } from "./computed";
 export function throttleExtender(target, timeout) {
   target.throttleEvaluation = timeout;
-  var writeTimeoutInstance = null;
+  let writeTimeoutInstance = void 0;
   return computed({
@@ -21,2 +18,3 @@ read: target,
 }
+const extenders = baseExtenders;
 extenders.throttle = throttleExtender;

dist/throttleExtender.js.map

 {
   "version": 3,
   "sources": ["../src/throttleExtender.ts"],
-  "sourcesContent": ["import {\n    extenders\n} from '@tko/observable'\n\nimport {\n    computed\n} from './computed'\n\nexport function throttleExtender (target, timeout) {\n    // Throttling means two things:\n\n    // (1) For dependent observables, we throttle *evaluations* so that, no matter how fast its dependencies\n    //     notify updates, the target doesn't re-evaluate (and hence doesn't notify) faster than a certain rate\n  target.throttleEvaluation = timeout\n\n    // (2) For writable targets (observables, or writable dependent observables), we throttle *writes*\n    //     so the target cannot change value synchronously or faster than a certain rate\n  var writeTimeoutInstance = null\n  return computed({\n    read: target,\n    write: function (value) {\n      clearTimeout(writeTimeoutInstance)\n      writeTimeoutInstance = setTimeout(function () {\n        target(value)\n      }, timeout)\n    }\n  })\n}\n\nextenders.throttle = throttleExtender\n"],
-  "mappings": ";AAAA;AAAA;AAAA;AAIA;AAAA;AAAA;AAIO,iCAA2B,QAAQ,SAAS;AAKjD,SAAO,qBAAqB;AAI5B,MAAI,uBAAuB;AAC3B,SAAO,SAAS;AAAA,IACd,MAAM;AAAA,IACN,OAAO,SAAU,OAAO;AACtB,mBAAa,oBAAoB;AACjC,6BAAuB,WAAW,WAAY;AAC5C,eAAO,KAAK;AAAA,MACd,GAAG,OAAO;AAAA,IACZ;AAAA,EACF,CAAC;AACH;AAEA,UAAU,WAAW;",
+  "sourcesContent": ["import { extenders as baseExtenders } from '@tko/observable'\nimport { computed } from './computed'\n\nexport function throttleExtender(target: any, timeout: number) {\n  // Throttling means two things:\n\n  // (1) For dependent observables, we throttle *evaluations* so that, no matter how fast its dependencies\n  //     notify updates, the target doesn't re-evaluate (and hence doesn't notify) faster than a certain rate\n  target.throttleEvaluation = timeout\n\n  // (2) For writable targets (observables, or writable dependent observables), we throttle *writes*\n  //     so the target cannot change value synchronously or faster than a certain rate\n  let writeTimeoutInstance: ReturnType<typeof setTimeout> | undefined = undefined\n  return computed({\n    read: target,\n    write: function (value) {\n      clearTimeout(writeTimeoutInstance)\n      writeTimeoutInstance = setTimeout(function () {\n        target(value)\n      }, timeout)\n    }\n  })\n}\n\nconst extenders = baseExtenders\n\nextenders.throttle = throttleExtender\n"],
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   "names": []
 }

dist/when.js

@@ -1,5 +0,4 @@
-// @tko/computed 🥊 4.0.0-beta1.3 ESM
-import {
-  pureComputed
-} from "./computed";
+// @tko/computed 🥊 4.0.0 ESM
+"use strict";
+import { pureComputed } from "./computed";
 function kowhen(predicate, context, resolve) {
@@ -6,0 +5,0 @@ const observable = pureComputed(predicate, context).extend({ notify: "always" });

dist/when.js.map

 {
   "version": 3,
   "sources": ["../src/when.ts"],
-  "sourcesContent": ["\nimport {\n  pureComputed\n} from './computed'\n\nfunction kowhen (predicate, context, resolve) {\n  const observable = pureComputed(predicate, context).extend({notify: 'always'});\n  const subscription = observable.subscribe(value => {\n    if (value) {\n      subscription.dispose()\n      resolve(value)\n    }\n  })\n  // In case the initial value is true, process it right away\n  observable.notifySubscribers(observable.peek())\n  return subscription\n}\n\nexport function when (predicate, callback, context) {\n  const whenFn = kowhen.bind(null, predicate, context)\n  return callback ? whenFn(callback.bind(context)) : new Promise(whenFn)\n}\n"],
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+  "sourcesContent": ["import { pureComputed } from './computed'\n\nfunction kowhen(predicate, context, resolve) {\n  const observable = pureComputed(predicate, context).extend({ notify: 'always' })\n  const subscription = observable.subscribe(value => {\n    if (value) {\n      subscription.dispose()\n      resolve(value)\n    }\n  })\n  // In case the initial value is true, process it right away\n  observable.notifySubscribers(observable.peek())\n  return subscription\n}\n\nexport function when(predicate, callback, context) {\n  const whenFn = kowhen.bind(null, predicate, context)\n  return callback ? whenFn(callback.bind(context)) : new Promise(whenFn)\n}\n"],
+  "mappings": ";;AAAA,SAAS,oBAAoB;AAE7B,SAAS,OAAO,WAAW,SAAS,SAAS;AAC3C,QAAM,aAAa,aAAa,WAAW,OAAO,EAAE,OAAO,EAAE,QAAQ,SAAS,CAAC;AAC/E,QAAM,eAAe,WAAW,UAAU,WAAS;AACjD,QAAI,OAAO;AACT,mBAAa,QAAQ;AACrB,cAAQ,KAAK;AAAA,IACf;AAAA,EACF,CAAC;AAED,aAAW,kBAAkB,WAAW,KAAK,CAAC;AAC9C,SAAO;AACT;AAEO,gBAAS,KAAK,WAAW,UAAU,SAAS;AACjD,QAAM,SAAS,OAAO,KAAK,MAAM,WAAW,OAAO;AACnD,SAAO,WAAW,OAAO,SAAS,KAAK,OAAO,CAAC,IAAI,IAAI,QAAQ,MAAM;AACvE;",
   "names": []
 }

package.json

 {
-  "version": "4.0.0-beta1.3",
+  "version": "4.0.0",
   "name": "@tko/computed",
@@ -11,4 +11,4 @@ "description": "TKO Computed Observables",
   "dependencies": {
-    "@tko/observable": "^4.0.0-beta1.3",
-    "@tko/utils": "^4.0.0-beta1.3",
+    "@tko/observable": "^4.0.0",
+    "@tko/utils": "^4.0.0",
     "tslib": "^2.2.0"
@@ -47,4 +47,3 @@ },
     "./helpers/*": "./helpers/*"
-  },
-  "gitHead": "a8843acb8ae085915115e53a4e057b30731c635e"
+  }
 }

LICENSE

-The MIT License (MIT) - http://www.opensource.org/licenses/mit-license.php
-
-Copyright (c) Steven Sanderson, the Knockout.js team, and other contributors
-http://knockoutjs.com/
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.

Fixed alerts

No v1

Quality

Package is not semver >=1. This means it is not stable and does not support ^ ranges.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

242371

1.33%

Lines of code

2411

4.42%

Number of low quality alerts

0

-100%

Worsened metrics

Number of package files

15

-6.25%

Dependency changes

• Updated

  @tko/observable@^4.0.0

• Updated

  @tko/utils@^4.0.0