4456e7e4de
Remove `looseIdentical` implementation and instead use the ES2015 `Object.is` in its place. They behave exactly the same way except for `+0`/`-0`. `looseIdentical(+0, -0)` => `true` `Object.is(+0, -0)` => `false` Other than the difference noted above, this is not be a breaking change because: 1. `looseIdentical` is a private API 2. ES2015 is listed as a mandatory polyfill in the [browser support guide](https://angular.io/guide/browser-support#mandatory-polyfills) 3. Also note that `Ivy` already uses `Object.is` in `bindingUpdated`. PR Close #37191
104 lines
3.8 KiB
TypeScript
104 lines
3.8 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {IterableChangeRecord, IterableChanges} from '@angular/core/src/change_detection/differs/iterable_differs';
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import {KeyValueChangeRecord, KeyValueChanges} from '@angular/core/src/change_detection/differs/keyvalue_differs';
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import {stringify} from '../../src/util/stringify';
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export function iterableDifferToString<V>(iterableChanges: IterableChanges<V>) {
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const collection: string[] = [];
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iterableChanges.forEachItem(
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(record: IterableChangeRecord<V>) => collection.push(icrAsString(record)));
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const previous: string[] = [];
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iterableChanges.forEachPreviousItem(
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(record: IterableChangeRecord<V>) => previous.push(icrAsString(record)));
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const additions: string[] = [];
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iterableChanges.forEachAddedItem(
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(record: IterableChangeRecord<V>) => additions.push(icrAsString(record)));
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const moves: string[] = [];
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iterableChanges.forEachMovedItem(
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(record: IterableChangeRecord<V>) => moves.push(icrAsString(record)));
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const removals: string[] = [];
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iterableChanges.forEachRemovedItem(
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(record: IterableChangeRecord<V>) => removals.push(icrAsString(record)));
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const identityChanges: string[] = [];
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iterableChanges.forEachIdentityChange(
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(record: IterableChangeRecord<V>) => identityChanges.push(icrAsString(record)));
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return iterableChangesAsString(
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{collection, previous, additions, moves, removals, identityChanges});
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}
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function icrAsString<V>(icr: IterableChangeRecord<V>): string {
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return icr.previousIndex === icr.currentIndex ? stringify(icr.item) :
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stringify(icr.item) + '[' +
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stringify(icr.previousIndex) + '->' + stringify(icr.currentIndex) + ']';
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}
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export function iterableChangesAsString({
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collection = [] as any,
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previous = [] as any,
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additions = [] as any,
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moves = [] as any,
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removals = [] as any,
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identityChanges = [] as any
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}): string {
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return 'collection: ' + collection.join(', ') + '\n' +
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'previous: ' + previous.join(', ') + '\n' +
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'additions: ' + additions.join(', ') + '\n' +
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'moves: ' + moves.join(', ') + '\n' +
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'removals: ' + removals.join(', ') + '\n' +
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'identityChanges: ' + identityChanges.join(', ') + '\n';
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}
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function kvcrAsString(kvcr: KeyValueChangeRecord<string, any>) {
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return Object.is(kvcr.previousValue, kvcr.currentValue) ?
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stringify(kvcr.key) :
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(stringify(kvcr.key) + '[' + stringify(kvcr.previousValue) + '->' +
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stringify(kvcr.currentValue) + ']');
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}
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export function kvChangesAsString(kvChanges: KeyValueChanges<string, any>) {
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const map: string[] = [];
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const previous: string[] = [];
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const changes: string[] = [];
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const additions: string[] = [];
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const removals: string[] = [];
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kvChanges.forEachItem(r => map.push(kvcrAsString(r)));
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kvChanges.forEachPreviousItem(r => previous.push(kvcrAsString(r)));
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kvChanges.forEachChangedItem(r => changes.push(kvcrAsString(r)));
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kvChanges.forEachAddedItem(r => additions.push(kvcrAsString(r)));
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kvChanges.forEachRemovedItem(r => removals.push(kvcrAsString(r)));
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return testChangesAsString({map, previous, additions, changes, removals});
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}
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export function testChangesAsString(
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{map, previous, additions, changes, removals}:
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{map?: any[], previous?: any[], additions?: any[], changes?: any[], removals?: any[]}):
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string {
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if (!map) map = [];
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if (!previous) previous = [];
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if (!additions) additions = [];
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if (!changes) changes = [];
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if (!removals) removals = [];
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return 'map: ' + map.join(', ') + '\n' +
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'previous: ' + previous.join(', ') + '\n' +
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'additions: ' + additions.join(', ') + '\n' +
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'changes: ' + changes.join(', ') + '\n' +
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'removals: ' + removals.join(', ') + '\n';
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}
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