MS Edge adds ES6 features including import and export
Most of ES2015 (aka ES6) language support is already available in Edge, and last week’s Windows Insider Preview build 14342 brings more ES6 capabilities including modules, default parameters, and destructuring. We’re not stopping there – Edge also supports all ES2016 (aka ES7) proposals – the exponentiation operator and Array.prototype.includes – as well as future ECMAScript proposals such as Async Functions and utility methods like Object.values/entries and String.prototype.padStart/padEnd.
Read more from the source: Microsoft Edge Dev Blog