inital #2

out/polyfill.js

@@ -0,0 +1,39 @@
+"use strict";
+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());
+    });
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Polyfill = void 0;
+const polyfillLibrary = require("polyfill-library");
+const _1 = require(".");
+const threads_1 = require("threads");
+const features = new _1.WaitForSync();
+(() => __awaiter(void 0, void 0, void 0, function* () {
+    const worker = yield threads_1.spawn(new threads_1.Worker("./polyfill-worker"));
+    const feats = yield worker();
+    yield threads_1.Thread.terminate(worker);
+    return feats;
+}))()
+    .then(feats => {
+    feats["fetch"] = {};
+    _1.Logger.debug("Polyfill analysed:", Object.keys(feats));
+    features.setData(feats);
+})
+    .catch(err => features.setError(err));
+function getRouter(opts) {
+    const options = Object.assign({ minify: _1.DefaultConfig.isProduction, unknown: "polyfill" }, opts);
+    return (req, res) => __awaiter(this, void 0, void 0, function* () {
+        const polyfillBundle = yield polyfillLibrary.getPolyfillString(Object.assign(Object.assign({}, options), { uaString: req.header("user-agent"), features: yield features.resolve(), stream: false }));
+        res.setHeader('Content-Type', 'text/javascript');
+        res.send(polyfillBundle);
+    });
+}
+exports.Polyfill = {
+    getRouter: getRouter,
+};