mirror of
https://github.com/lensapp/lens.git
synced 2025-05-20 05:10:56 +00:00
8088d3b5c2
- Switch to helper functions instead. They don't impact the prototype tree and it means that we don't need to introduce versions that are both observable and "normal" - Tidy <ItemListLayout> and hiddenTableColumns to not need pre-initialization Signed-off-by: Sebastian Malton <sebastian@malton.name>
91 lines
2.4 KiB
TypeScript
91 lines
2.4 KiB
TypeScript
/**
|
|
* Copyright (c) OpenLens Authors. All rights reserved.
|
|
* Licensed under MIT License. See LICENSE in root directory for more information.
|
|
*/
|
|
|
|
import { runInAction } from "mobx";
|
|
|
|
/**
|
|
* Get the value behind `key`. If it was not present, first insert `value`
|
|
* @param map The map to interact with
|
|
* @param key The key to insert into the map with
|
|
* @param value The value to optional add to the map
|
|
* @returns The value in the map
|
|
*/
|
|
export function getOrInsert<K, V>(map: Map<K, V>, key: K, value: V): V {
|
|
if (!map.has(key)) {
|
|
map.set(key, value);
|
|
}
|
|
|
|
return map.get(key);
|
|
}
|
|
|
|
/**
|
|
* Like `getOrInsert` but specifically for when `V` is `Map<MK, MV>` so that
|
|
* the typings are inferred correctly.
|
|
*/
|
|
export function getOrInsertMap<K, MK, MV>(map: Map<K, Map<MK, MV>>, key: K): Map<MK, MV> {
|
|
return getOrInsert(map, key, new Map<MK, MV>());
|
|
}
|
|
|
|
/**
|
|
* Like `getOrInsert` but specifically for when `V` is `Set<any>` so that
|
|
* the typings are inferred.
|
|
*/
|
|
export function getOrInsertSet<K, SK>(map: Map<K, Set<SK>>, key: K): Set<SK> {
|
|
return getOrInsert(map, key, new Set<SK>());
|
|
}
|
|
|
|
/**
|
|
* Like `getOrInsert` but with delayed creation of the item. Which is useful
|
|
* if it is very expensive to create the initial value.
|
|
*/
|
|
export function getOrInsertWith<K, V>(map: Map<K, V>, key: K, builder: () => V): V {
|
|
if (!map.has(key)) {
|
|
map.set(key, builder());
|
|
}
|
|
|
|
return map.get(key);
|
|
}
|
|
|
|
/**
|
|
* Set the value associated with `key` iff there was not a previous value
|
|
* @param map The map to interact with
|
|
* @throws if `key` already in map
|
|
* @returns `this` so that `strictSet` can be chained
|
|
*/
|
|
export function strictSet<K, V>(map: Map<K, V>, key: K, val: V): typeof map {
|
|
if (map.has(key)) {
|
|
throw new TypeError("Duplicate key in map");
|
|
}
|
|
|
|
return map.set(key, val);
|
|
}
|
|
|
|
/**
|
|
* Get the value associated with `key`
|
|
* @param map The map to interact with
|
|
* @throws if `key` did not a value associated with it
|
|
*/
|
|
export function strictGet<K, V>(map: Map<K, V>, key: K): V {
|
|
if (!map.has(key)) {
|
|
throw new TypeError("key not in map");
|
|
}
|
|
|
|
return map.get(key);
|
|
}
|
|
|
|
/**
|
|
* If `key` is in `set`, remove it otherwise add it.
|
|
* @param set The set to manipulate
|
|
* @param key The key to toggle the "is in"-ness of
|
|
*/
|
|
export function toggle<K>(set: Set<K>, key: K): void {
|
|
runInAction(() => {
|
|
// Returns true if value was already in Set; otherwise false.
|
|
if (!set.delete(key)) {
|
|
set.add(key);
|
|
}
|
|
});
|
|
}
|