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client-ts: Port services/mutex

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Elian Doran 2024-07-25 00:12:24 +03:00
parent 679e9eba77
commit bece0aa784
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1 changed files with 5 additions and 4 deletions
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9
src/public/app/utils/mutex.js → src/public/app/utils/mutex.ts
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@ -1,12 +1,13 @@
export default class Mutex { export default class Mutex {
private current: Promise<void>;
constructor() { constructor() {
this.current = Promise.resolve(); this.current = Promise.resolve();
} }
/** @returns {Promise} */
lock() { lock() {
let resolveFun; let resolveFun: () => void;
const subPromise = new Promise(resolve => resolveFun = () => resolve()); const subPromise = new Promise<void>(resolve => resolveFun = () => resolve());
// Caller gets a promise that resolves when the current outstanding lock resolves // Caller gets a promise that resolves when the current outstanding lock resolves
const newPromise = this.current.then(() => resolveFun); const newPromise = this.current.then(() => resolveFun);
// Don't allow the next request until the new promise is done // Don't allow the next request until the new promise is done
@ -15,7 +16,7 @@ export default class Mutex {
return newPromise; return newPromise;
}; };
async runExclusively(cb) { async runExclusively(cb: () => Promise<void>) {
const unlock = await this.lock(); const unlock = await this.lock();
try { try {