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Add .weakRef() (#165)

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Co-authored-by: Sindre Sorhus <sindresorhus@gmail.com>
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Eric（书生） 2022-06-13 15:05:26 +08:00 • committed by GitHub
parent 06d217f70c
commit e503a9ec49
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4 changed files with 23 additions and 2 deletions
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7
source/index.ts
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@ -1,5 +1,5 @@
import type {Buffer} from 'node:buffer';
import type {Class, Falsy, TypedArray, ObservableLike, Primitive} from './types.js';
import type {Class, Falsy, TypedArray, ObservableLike, Primitive, WeakRef} from './types.js';
const typedArrayTypeNames = [
'Int8Array',
@ -40,6 +40,7 @@ const objectTypeNames = [
'Set',
'WeakMap',
'WeakSet',
'WeakRef',
'ArrayBuffer',
'SharedArrayBuffer',
'DataView',
@ -230,6 +231,8 @@ is.weakMap = <Key extends object = object, Value = unknown>(value: unknown): val
is.weakSet = (value: unknown): value is WeakSet<object> => isObjectOfType<WeakSet<object>>('WeakSet')(value); // eslint-disable-line @typescript-eslint/ban-types
is.weakRef = (value: unknown): value is WeakRef<object> => isObjectOfType<WeakRef<object>>('WeakRef')(value); // eslint-disable-line @typescript-eslint/ban-types
is.int8Array = isObjectOfType<Int8Array>('Int8Array');
is.uint8Array = isObjectOfType<Uint8Array>('Uint8Array');
is.uint8ClampedArray = isObjectOfType<Uint8ClampedArray>('Uint8ClampedArray');
@ -524,6 +527,7 @@ interface Assert {
set: <T = unknown>(value: unknown) => asserts value is Set<T>;
weakMap: <Key extends object = object, Value = unknown>(value: unknown) => asserts value is WeakMap<Key, Value>; // eslint-disable-line @typescript-eslint/ban-types
weakSet: <T extends object = object>(value: unknown) => asserts value is WeakSet<T>; // eslint-disable-line @typescript-eslint/ban-types
weakRef: <T extends object = object>(value: unknown) => asserts value is WeakRef<T>; // eslint-disable-line @typescript-eslint/ban-types
int8Array: (value: unknown) => asserts value is Int8Array;
uint8Array: (value: unknown) => asserts value is Uint8Array;
uint8ClampedArray: (value: unknown) => asserts value is Uint8ClampedArray;
@ -629,6 +633,7 @@ export const assert: Assert = {
set: <T = unknown>(value: unknown): asserts value is Set<T> => assertType(is.set(value), 'Set', value),
weakMap: <Key extends object = object, Value = unknown>(value: unknown): asserts value is WeakMap<Key, Value> => assertType(is.weakMap(value), 'WeakMap', value), // eslint-disable-line @typescript-eslint/ban-types
weakSet: <T extends object = object>(value: unknown): asserts value is WeakSet<T> => assertType(is.weakSet(value), 'WeakSet', value), // eslint-disable-line @typescript-eslint/ban-types
weakRef: <T extends object = object>(value: unknown): asserts value is WeakRef<T> => assertType(is.weakRef(value), 'WeakRef', value), // eslint-disable-line @typescript-eslint/ban-types
int8Array: (value: unknown): asserts value is Int8Array => assertType(is.int8Array(value), 'Int8Array', value),
uint8Array: (value: unknown): asserts value is Uint8Array => assertType(is.uint8Array(value), 'Uint8Array', value),
uint8ClampedArray: (value: unknown): asserts value is Uint8ClampedArray => assertType(is.uint8ClampedArray(value), 'Uint8ClampedArray', value),

5
source/types.ts
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@ -49,3 +49,8 @@ export interface ObservableLike {
// eslint-disable-next-line @typescript-eslint/ban-types
export type Falsy = false | 0 | 0n | '' | null | undefined;
export interface WeakRef<T extends object> { // eslint-disable-line @typescript-eslint/ban-types
readonly [Symbol.toStringTag]: 'WeakRef';
deref(): T | undefined;
}