chromeless
Version:
🖥 Chrome automation made simple. Runs locally or headless on AWS Lambda.
238 lines • 12.3 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 CDP = require("chrome-remote-interface");
var chrome_launcher_1 = require("chrome-launcher");
var local_runtime_1 = require("./local-runtime");
var util_1 = require("../util");
var LocalChrome = /** @class */ (function () {
function LocalChrome(options) {
if (options === void 0) { options = {}; }
this.options = options;
this.runtimeClientPromise = this.initRuntimeClient();
}
LocalChrome.prototype.initRuntimeClient = function () {
return __awaiter(this, void 0, void 0, function () {
var client, _a, _b, viewport, runtime;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
if (!this.options.launchChrome) return [3 /*break*/, 2];
return [4 /*yield*/, this.startChrome()];
case 1:
_a = _c.sent();
return [3 /*break*/, 4];
case 2: return [4 /*yield*/, this.connectToChrome()];
case 3:
_a = _c.sent();
_c.label = 4;
case 4:
client = _a;
_b = this.options.viewport, viewport = _b === void 0 ? {} : _b;
return [4 /*yield*/, util_1.setViewport(client, viewport)];
case 5:
_c.sent();
runtime = new local_runtime_1.default(client, this.options);
return [2 /*return*/, { client: client, runtime: runtime }];
}
});
});
};
LocalChrome.prototype.startChrome = function () {
return __awaiter(this, void 0, void 0, function () {
var port, _a, target;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
port = this.options.cdp.port;
_a = this;
return [4 /*yield*/, chrome_launcher_1.launch({
logLevel: this.options.debug ? 'info' : 'silent',
chromeFlags: [
// Do not render scroll bars
'--hide-scrollbars',
// The following options copied verbatim from https://github.com/GoogleChrome/chrome-launcher/blob/master/src/flags.ts
// Disable built-in Google Translate service
'--disable-translate',
// Disable all chrome extensions entirely
'--disable-extensions',
// Disable various background network services, including extension updating,
// safe browsing service, upgrade detector, translate, UMA
'--disable-background-networking',
// Disable fetching safebrowsing lists, likely redundant due to disable-background-networking
'--safebrowsing-disable-auto-update',
// Disable syncing to a Google account
'--disable-sync',
// Disable reporting to UMA, but allows for collection
'--metrics-recording-only',
// Disable installation of default apps on first run
'--disable-default-apps',
// Mute any audio
'--mute-audio',
// Skip first run wizards
'--no-first-run',
],
port: port,
})];
case 1:
_a.chromeInstance = _b.sent();
return [4 /*yield*/, CDP.New({
port: port,
})];
case 2:
target = _b.sent();
return [4 /*yield*/, CDP({ target: target, port: port })];
case 3: return [2 /*return*/, _b.sent()];
}
});
});
};
LocalChrome.prototype.connectToChrome = function () {
return __awaiter(this, void 0, void 0, function () {
var _a, host, port, target;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
_a = this.options.cdp, host = _a.host, port = _a.port;
return [4 /*yield*/, CDP.New({
port: port,
host: host,
})];
case 1:
target = _b.sent();
return [4 /*yield*/, CDP({ target: target, host: host, port: port })];
case 2: return [2 /*return*/, _b.sent()];
}
});
});
};
LocalChrome.prototype.setViewport = function (client) {
return __awaiter(this, void 0, void 0, function () {
var _a, viewport, config, _b, host, port, versionResult, isHeadless, _c, _d;
return __generator(this, function (_e) {
switch (_e.label) {
case 0:
_a = this.options.viewport, viewport = _a === void 0 ? {} : _a;
config = {
deviceScaleFactor: 1,
mobile: false,
scale: viewport.scale || 1,
fitWindow: false,
};
_b = this.options.cdp, host = _b.host, port = _b.port;
return [4 /*yield*/, CDP.Version({ host: host, port: port })];
case 1:
versionResult = _e.sent();
isHeadless = versionResult['User-Agent'].includes('Headless');
if (!(viewport.height && viewport.width)) return [3 /*break*/, 2];
config.height = viewport.height;
config.width = viewport.width;
return [3 /*break*/, 6];
case 2:
if (!isHeadless) return [3 /*break*/, 3];
// just apply default value in headless mode to maintain original browser viewport
config.height = 900;
config.width = 1440;
return [3 /*break*/, 6];
case 3:
_c = config;
return [4 /*yield*/, util_1.evaluate(client, (function () { return window.innerHeight; }).toString())];
case 4:
_c.height = _e.sent();
_d = config;
return [4 /*yield*/, util_1.evaluate(client, (function () { return window.innerWidth; }).toString())];
case 5:
_d.width = _e.sent();
_e.label = 6;
case 6: return [4 /*yield*/, client.Emulation.setDeviceMetricsOverride(config)];
case 7:
_e.sent();
return [4 /*yield*/, client.Emulation.setVisibleSize({
width: config.width,
height: config.height,
})];
case 8:
_e.sent();
return [2 /*return*/];
}
});
});
};
LocalChrome.prototype.process = function (command) {
return __awaiter(this, void 0, void 0, function () {
var runtime;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.runtimeClientPromise];
case 1:
runtime = (_a.sent()).runtime;
return [4 /*yield*/, runtime.run(command)];
case 2: return [2 /*return*/, (_a.sent())];
}
});
});
};
LocalChrome.prototype.close = function () {
return __awaiter(this, void 0, void 0, function () {
var client, _a, host, port;
return __generator(this, function (_b) {
switch (_b.label) {
case 0: return [4 /*yield*/, this.runtimeClientPromise];
case 1:
client = (_b.sent()).client;
if (!this.options.cdp.closeTab) return [3 /*break*/, 3];
_a = this.options.cdp, host = _a.host, port = _a.port;
return [4 /*yield*/, CDP.Close({ host: host, port: port, id: client.target.id })];
case 2:
_b.sent();
_b.label = 3;
case 3:
if (this.chromeInstance) {
this.chromeInstance.kill();
}
return [4 /*yield*/, client.close()];
case 4:
_b.sent();
return [2 /*return*/];
}
});
});
};
return LocalChrome;
}());
exports.default = LocalChrome;
//# sourceMappingURL=local.js.map