64223efafe
* Further cleanup and fixes Tests clean-up Tests fixed? Plays nicely with threads Tests fixed Fixes ESR and show experimental flags Failing test fixed DM Fix WIP: Bottom bar UX Fixes for unreads Failing test Always show current channel Create a channel in a category! * Unreads on top * Various fixes * Improves category collapsing * Passes correct ID through * Tests cleanup * Redo unreads and unread-button * Reverts to just using ids * More unreads back to using ids * Uses appropriate selectors for pref updates * Unreads sorted by recency * Fixes test for recency * Fixes re-rendering bug * Code review updates, websocket event debounced
51 lines
1.7 KiB
TypeScript
51 lines
1.7 KiB
TypeScript
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
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// See LICENSE.txt for license information.
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// insertWithoutDuplicates inserts an item into an array and returns the result. The provided array is not modified.
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// If the array already contains the given item, that item is moved to the new location instead of adding a duplicate.
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// If the array already had the given item at the given index, the origianl array is returned.
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export function insertWithoutDuplicates<T>(array: T[], item: T, newIndex: number) {
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const index = array.indexOf(item);
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if (newIndex === index) {
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// The item doesn't need to be moved since its location hasn't changed
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return array;
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}
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const newArray = [...array];
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// Remove the item from its old location if it already exists in the array
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if (index !== -1) {
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newArray.splice(index, 1);
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}
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// And re-add it in its new location
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newArray.splice(newIndex, 0, item);
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return newArray;
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}
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export function insertMultipleWithoutDuplicates<T>(array: T[], items: T[], newIndex: number) {
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let newArray = [...array];
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items.forEach((item) => {
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newArray = removeItem(newArray, item);
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});
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// And re-add it in its new location
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newArray.splice(newIndex, 0, ...items);
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return newArray;
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}
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// removeItem removes an item from an array and returns the result. The provided array is not modified. If the array
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// did not originally contain the given item, the original array is returned.
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export function removeItem<T>(array: T[], item: T) {
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const index = array.indexOf(item);
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if (index === -1) {
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return array;
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}
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const result = [...array];
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result.splice(index, 1);
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return result;
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}
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