25 lines
534 B
TypeScript
25 lines
534 B
TypeScript
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/** @internal */
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export class Lock {
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private _prom: Promise<void> | null = null
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private _unlock: (() => void) | null = null
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constructor() {
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this._prom = null
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this._unlock = null
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}
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async acquire(): Promise<void> {
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if (this._prom) await this._prom
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this._prom = new Promise((resolve) => {
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this._unlock = resolve
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})
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}
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release(): void {
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if (!this._unlock) return
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this._unlock()
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this._prom = null
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this._unlock = null
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}
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}
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