src WeakMap.ts

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100% Branches 0/0

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  import { ReflectSetPrototypeOf } from './Reflect';
import { SymbolToStringTag } from './Symbol';
 
export const WeakMapCtor = WeakMap;
 
const { prototype: WeakMapProto } = WeakMapCtor;
 
export const { has: WeakMapProtoHas } = WeakMapProto;
 
const {
    delete: WeakMapProtoDelete,
    get: WeakMapProtoGet,
    set: WeakMapProtoSet,
    [SymbolToStringTag]: WeakMapProtoSymbolToStringTag,
} = WeakMapProto as any;
 
export function toSafeWeakMap<T extends WeakMap<any, any>>(weakMap: T): T {
    ReflectSetPrototypeOf(weakMap, null);
    weakMap.delete = WeakMapProtoDelete;
    weakMap.get = WeakMapProtoGet;
    weakMap.has = WeakMapProtoHas;
    weakMap.set = WeakMapProtoSet;
    (weakMap as any)[SymbolToStringTag] = WeakMapProtoSymbolToStringTag;
    ReflectSetPrototypeOf(weakMap, WeakMapProto);
    return weakMap;
}