chromeless
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🖥 Chrome automation made simple. Runs locally or headless on AWS Lambda.
119 lines • 5.55 kB
JavaScript
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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) : new P(function (resolve) { resolve(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 = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [0, 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 });
var Queue = /** @class */ (function () {
function Queue(chrome) {
this.chrome = chrome;
this.flushCount = 0;
this.commandQueue = {
0: [],
};
}
Queue.prototype.end = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
this.lastWaitAll = this.waitAll();
return [4 /*yield*/, this.lastWaitAll];
case 1:
_a.sent();
return [4 /*yield*/, this.chrome.close()];
case 2:
_a.sent();
return [2 /*return*/];
}
});
});
};
Queue.prototype.enqueue = function (command) {
this.commandQueue[this.flushCount].push(command);
};
Queue.prototype.process = function (command) {
return __awaiter(this, void 0, void 0, function () {
var lastWaitAllTmp;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!this.lastWaitAll) return [3 /*break*/, 2];
lastWaitAllTmp = this.lastWaitAll;
this.lastWaitAll = this.waitAll();
return [4 /*yield*/, lastWaitAllTmp];
case 1:
_a.sent();
return [3 /*break*/, 3];
case 2:
this.lastWaitAll = this.waitAll();
_a.label = 3;
case 3: return [4 /*yield*/, this.lastWaitAll];
case 4:
_a.sent();
return [2 /*return*/, this.chrome.process(command)];
}
});
});
};
Queue.prototype.waitAll = function () {
return __awaiter(this, void 0, void 0, function () {
var previousFlushCount, _i, _a, command;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
previousFlushCount = this.flushCount;
this.flushCount++;
this.commandQueue[this.flushCount] = [];
_i = 0, _a = this.commandQueue[previousFlushCount];
_b.label = 1;
case 1:
if (!(_i < _a.length)) return [3 /*break*/, 4];
command = _a[_i];
return [4 /*yield*/, this.chrome.process(command)];
case 2:
_b.sent();
_b.label = 3;
case 3:
_i++;
return [3 /*break*/, 1];
case 4: return [2 /*return*/];
}
});
});
};
return Queue;
}());
exports.default = Queue;
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