@twilio/voice-sdk
Version:
Twilio's JavaScript Voice SDK
115 lines • 6.92 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.AsyncQueue = void 0;
/**
* @packageDocumentation
* @module Voice
* @internalapi
*/
var deferred_1 = require("./deferred");
/**
* Queue async operations and executes them synchronously.
*/
var AsyncQueue = /** @class */ (function () {
function AsyncQueue() {
/**
* The list of async operations in this queue
*/
this._operations = [];
}
/**
* Adds the async operation to the queue
* @param callback An async callback that returns a promise
* @returns A promise that will get resolved or rejected after executing the callback
*/
AsyncQueue.prototype.enqueue = function (callback) {
var hasPending = !!this._operations.length;
var deferred = new deferred_1.default();
this._operations.push({ deferred: deferred, callback: callback });
if (!hasPending) {
this._processQueue();
}
return deferred.promise;
};
/**
* Start processing the queue. This executes the first item and removes it after.
* Then do the same for next items until the queue is emptied.
*/
AsyncQueue.prototype._processQueue = function () {
return __awaiter(this, void 0, void 0, function () {
var _a, deferred, callback, result, error, hasResolved, e_1;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
if (!this._operations.length) return [3 /*break*/, 5];
_a = this._operations[0], deferred = _a.deferred, callback = _a.callback;
result = void 0;
error = void 0;
hasResolved = void 0;
_b.label = 1;
case 1:
_b.trys.push([1, 3, , 4]);
return [4 /*yield*/, callback()];
case 2:
result = _b.sent();
hasResolved = true;
return [3 /*break*/, 4];
case 3:
e_1 = _b.sent();
error = e_1;
return [3 /*break*/, 4];
case 4:
// Remove the item
this._operations.shift();
if (hasResolved) {
deferred.resolve(result);
}
else {
deferred.reject(error);
}
return [3 /*break*/, 0];
case 5: return [2 /*return*/];
}
});
});
};
return AsyncQueue;
}());
exports.AsyncQueue = AsyncQueue;
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