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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| import type { Array } from "laser-utils"; | ||
| import type { Object } from "laser-utils"; | ||
| import { isArray, isObject } from "laser-utils"; | ||
|
|
||
| export class Collection { | ||
| /** | ||
| * Pick | ||
| * @param target Object.Any | ||
| * @param keys keyof Object.Any | ||
| */ | ||
| public static pick<T extends Object.Any, K extends keyof T>( | ||
| target: T, | ||
| keys: K | K[] | ||
| ): Pick<T, K> { | ||
| const set: Set<unknown> = new Set(isArray(keys) ? keys : [keys]); | ||
| const next = {} as T; | ||
| for (const key in target) { | ||
| if (!set.has(key)) continue; | ||
| next[key] = target[key]; | ||
| } | ||
| return next; | ||
| } | ||
|
|
||
| /** | ||
| * Omit | ||
| * @param target Array.Any | Object.Any | ||
| * @param keys keys: Array.Any | ||
| */ | ||
| public static omit<T extends Array.Any>(target: T, keys: T): T; | ||
| public static omit<T extends Object.Any, K extends keyof T>(target: T, keys: K | K[]): Omit<T, K>; | ||
| public static omit<T extends Array.Any | Object.Any>(target: T, keys: Array.Any): T | Object.Any { | ||
| const set = new Set(isArray(keys) ? keys : [keys]); | ||
| if (isObject(target)) { | ||
| const next = {} as Object.Unknown; | ||
| for (const key in target) { | ||
| if (set.has(key)) continue; | ||
| next[key] = target[key]; | ||
| } | ||
| return next; | ||
| } | ||
| return target.filter(item => !set.has(item)); | ||
| } | ||
|
|
||
| /** | ||
| * Patch | ||
| * @param a Set<T> | T[] | ||
| * @param b Set<T> | T[] | ||
| */ | ||
| public static patch<T>(a: Set<T> | T[], b: Set<T> | T[]) { | ||
| const prev = a instanceof Set ? a : new Set(a); | ||
| const next = b instanceof Set ? b : new Set(b); | ||
| const effects: T[] = []; | ||
| const added: T[] = []; | ||
| const removed: T[] = []; | ||
| for (const id of next) { | ||
| if (!prev.has(id)) added.push(id); | ||
| } | ||
| for (const id of prev) { | ||
| if (!next.has(id)) removed.push(id); | ||
| } | ||
| effects.push(...added, ...removed); | ||
| return { effects, added, removed }; | ||
| } | ||
|
|
||
| /** | ||
| * Union | ||
| * @param a Set<T> | T[] | ||
| * @param b Set<T> | T[] | ||
| */ | ||
| public static union<T>(a: Set<T> | T[], b: Set<T> | T[]) { | ||
| return [...a, ...b]; | ||
| } | ||
|
|
||
| /** | ||
| * Intersection | ||
| * @param a Set<T> | T[] | ||
| * @param b Set<T> | T[] | ||
| */ | ||
| public static intersection<T>(a: Set<T> | T[], b: Set<T> | T[]) { | ||
| const prev = [...a]; | ||
| const next = b instanceof Set ? b : new Set(b); | ||
| return new Set([...prev].filter(id => next.has(id))); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| import { isFunction } from "laser-utils"; | ||
|
|
||
| // ExperimentalDecorators | ||
| // https://www.typescriptlang.org/docs/handbook/release-notes/typescript-5-0.html | ||
|
|
||
| /** | ||
| * Bind 装饰器 | ||
| * @param _ | ||
| * @param key | ||
| * @param descriptor | ||
| */ | ||
| export function Bind<T>(_: T, key: string, descriptor: PropertyDescriptor): PropertyDescriptor { | ||
| const originalMethod = descriptor.value; | ||
| if (!isFunction(originalMethod)) { | ||
| throw new TypeError(`${originalMethod} is not a function`); | ||
| } | ||
|
|
||
| return { | ||
| configurable: true, | ||
| get() { | ||
| const boundFunction = originalMethod.bind(this); | ||
| Object.defineProperty(this, key, { | ||
| value: boundFunction, | ||
| configurable: true, | ||
| writable: true, | ||
| enumerable: false, | ||
| }); | ||
| return boundFunction; | ||
| }, | ||
| }; | ||
| } |
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