How to get support of generators in typescript without setting target to ES6?

Question

Got a situation here. I use nodejs with --harmony flag to get support of generators. Next i'm trying to switch my project to TypeScript and get a problem: in "target":"ES6" mode it transpiles import commands as is (instead of require).

And node with --harmony flag doesn't support that:

import * as fs from 'fs';
^^^^^^
SyntaxError: Unexpected reserved word

Transpiling option "module":"commonjs isn't allowed with "target":"ES6".

Have anyone solved this problem without using any external require/import utilities?

Another side of the problem is that TypeScript transpiles var fs = require('fs'); into import * as fs from 'fs'; on it's own. So, no way to avoid import commands. — Ivan Pesochenko
– Ivan Pesochenko, Commented Oct 13, 2015 at 12:09

Ivan Pesochenko · Accepted Answer · 2015-10-13 12:51:10Z

3

These settings have worked for me:

tsconfig.json

{
  "compilerOptions": {
    "target":"ES6",
    "moduleResolution": "classic",
  }
}

ES6 support for generators
No import stuff transpiling due to "moduleResolution": "classic"

And so the problem's gone!

edited Oct 13, 2015 at 12:51

answered Oct 13, 2015 at 12:45

Ivan Pesochenko

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2 Comments

keshav Over a year ago

We still couldn't achieve this using solely ts, I guess we need separate transpiler like babel to convert final es6 file to es5

Jorge Fuentes González Over a year ago

OP: "...without setting target to ES6?" also OP: "target":"ES6"

Remo H. Jansen · Accepted Answer · 2015-10-13 12:45:19Z

1

As you can see in the TypeScript roadmap (Version 1.7) one of the current issues is "Support --module with --target es6".

I'm afraid your are going to need a temporal solution until TypeScript 1.7 is released. Maybe Polyfill for the ES6 Module Loader or SystemJS?

answered Oct 13, 2015 at 12:45

Remo H. Jansen

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Comments

Ivan Pesochenko · Accepted Answer · 2015-10-16 14:49:48Z

0

Another way to get all i want is a build stack:

Transpile TS to ES6
Transpile es6-js to es5-js with Babel

answered Oct 16, 2015 at 14:49

Ivan Pesochenko

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