@hpke/core/script/src/mutex.js

A Hybrid Public Key Encryption (HPKE) core module for various JavaScript runtimes

var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "m") throw new TypeError("Private method is not writable");
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define(["require", "exports"], factory);
    }
})(function (require, exports) {
    "use strict";
    var _Mutex_locked;
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.Mutex = void 0;
    class Mutex {
        constructor() {
            _Mutex_locked.set(this, Promise.resolve());
        }
        async lock() {
            let releaseLock;
            const nextLock = new Promise((resolve) => {
                releaseLock = resolve;
            });
            const previousLock = __classPrivateFieldGet(this, _Mutex_locked, "f");
            __classPrivateFieldSet(this, _Mutex_locked, nextLock, "f");
            await previousLock;
            return releaseLock;
        }
    }
    exports.Mutex = Mutex;
    _Mutex_locked = new WeakMap();
});