class Lock {
#release: () => void | undefined;
constructor(public name: string) {}
acquire() {
if (this.#release !== undefined) throw new Error("Already locked");
navigator.locks.request(this.name, async (lock) => {
await new Promise<void>(resolve => {
this.#release = resolve;
});
});
}
release() {
if (this.#release === undefined) throw new Error("Not locked");
this.#release();
}
} class Lock {
#resolve: (() => void) | undefined;
#releasePromise: Promise<void> | undefined;
constructor(public name: string) {}
acquire(): Promise<void> {
if (this.#releasePromise !== undefined) {
throw new Error("Already aquired");
}
return new Promise((resolveAquire, _rejectAquire) => {
this.#releasePromise = new Promise((resolveRelease, _rejectRelease) => {
navigator.locks.request(this.name, async (lock) => {
await new Promise<void>((resolve, _reject) => {
this.#resolve = resolve;
resolveAquire();
});
resolveRelease();
});
});
});
}
async release(): Promise<void> {
if (this.#releasePromise === undefined) {
throw new Error("Already released");
}
this.#resolve();
await this.#releasePromise;
this.#resolve = undefined;
this.#releasePromise = undefined;
}
}
EDIT: think I fixed it, untested though