mirror of
https://gitee.com/wanwujie/sub2api
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20 lines
467 B
TypeScript
20 lines
467 B
TypeScript
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let globalStableObjectKeySeed = 0
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/**
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* 为对象实例生成稳定 key（基于 WeakMap，不污染业务对象）
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*/
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export function createStableObjectKeyResolver<T extends object>(prefix = 'item') {
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const keyMap = new WeakMap<T, string>()
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return (item: T): string => {
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const cached = keyMap.get(item)
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if (cached) {
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return cached
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}
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const key = `${prefix}-${++globalStableObjectKeySeed}`
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keyMap.set(item, key)
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return key
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}
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}
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