warehouse/dist/mutex.js

Simple JSON-based database

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
class Mutex {
    constructor() {
        this._locked = false;
        this._queue = [];
    }
    lock(fn) {
        if (this._locked) {
            this._queue.push(fn);
            return;
        }
        this._locked = true;
        fn();
    }
    unlock() {
        if (!this._locked)
            return;
        const next = this._queue.shift();
        if (next) {
            next();
        }
        else {
            this._locked = false;
        }
    }
}
exports.default = Mutex;
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