Made polyfill route more flexible

out/polyfill-worker.js

@@ -5,14 +5,14 @@ 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(() => {
+worker_1.expose((fileToWatch) => {
     const exclude = [
         "console.markTimeline",
         "console.timeline",
         "console.timelineEnd",
     ];
     const featureList = polyfill_analyzer_1.analyze({
-        source: fs.readFileSync('./public/js/bundle.js', 'utf-8'),
+        source: fs.readFileSync(fileToWatch, 'utf-8'),
         include: polyfills_1.default.filter(x => !exclude.includes(x)),
         // Not all features listed by polyfillLibrary.listAllPolyfills()` can be detected.
         unsupportedPolyfill: 'ignore',