inital #4

out/polyfill-worker.js

@@ -0,0 +1,25 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+// workers/add.js
+const worker_1 = require("threads/worker");
+const fs = require("fs");
+const polyfill_analyzer_1 = require("@10xjs/polyfill-analyzer");
+const polyfills_1 = require("@10xjs/polyfill-analyzer/dist/polyfills");
+worker_1.expose(() => {
+    const exclude = [
+        "console.markTimeline",
+        "console.timeline",
+        "console.timelineEnd",
+    ];
+    const featureList = polyfill_analyzer_1.analyze({
+        source: fs.readFileSync('./public/js/bundle.js', 'utf-8'),
+        include: polyfills_1.default.filter(x => !exclude.includes(x)),
+        // Not all features listed by polyfillLibrary.listAllPolyfills()` can be detected.
+        unsupportedPolyfill: 'ignore',
+    });
+    const feats = {};
+    for (const feature of featureList) {
+        feats[feature] = {};
+    }
+    return feats;
+});