Transpiling async/await to generators instead of es6-Generator-function for es6

Search Terms

async await es6 transpile generator

Suggestion

If there was a compile option that i can tell the compiler to emit generators instead of es6-Generator-function when targeting es6.

Use Cases

I have to use 3rd-party libs that implemented in es6，so targeting es5 will not work. But i can't write code with async/await when targeting es6 because the platform on which to run the app dose not support yield/funtion* (but other es6 features's ok).

Examples

Checklist

I try Babel and regenerator, all of them transpile es6 code into es5(or other version), but then I can't use 3rd-party libs. Work round is applying transpilation on libs too.

My suggestion meets these guidelines:

• This wouldn't be a breaking change in existing TypeScript/JavaScript code
• This wouldn't change the runtime behavior of existing JavaScript code
• This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
• This feature would agree with the rest of TypeScript's Design Goals.

The issue names no source files, tests, or compiler entry points. Start by tracing how TypeScript lowers async/await for an ES6 target and compare the requested generator output with current ES6 output. Done means a clearly defined compiler option produces the requested output without breaking existing targets or behavior.