converter/src/polyfills.ts

import "core-js/es6";
import "core-js/es7/reflect";
require("zone.js/dist/zone");

if (process.env.ENV === 'production') {
    // Production
} else {
    // Development and test
    Error['stackTraceLimit'] = Infinity;
    require('zone.js/dist/long-stack-trace-zone');
}