Update to babel 7 ?

Is there any plan to update aurelia-cli to babel 7 soon?

It seems that these 2 requires messed transpilation when we want to use new babel version: https://github.com/aurelia/cli/blob/15b1f1f6d4ee74a5a429ca90651d61b0e8d8abdf/lib/project.js#L207-L218

And it seems that this transformation do the trick:

function installBabel() {
  require('@babel/polyfill');
  require('@babel/register')({
    plugins: [
      '@babel/plugin-transform-modules-commonjs'
    ],
    ignore: [(filename) => {
      let relativeFromProjectRoot = path.relative(this.directory, filename);
      return !/^aurelia_project/.test(relativeFromProjectRoot);
    }]
  });
}

This will allow us to use improvements of @babel/preset-env in a local .babelrc file.

[EisenbergEffect]

A couple of weeks ago there was a meeting with Yahuda, who is working on the decorators spec, and the major framework leaders. I’m completely up to speed about where decorators is at now 😃 The new spec looks very good and is poised to move into stage 3. At that point, we’ll probably see transpiler and polyfill implementations. During that meeting we also talked about compatibility layers for transpiler migration. I think we’ll probably wait for that to happen before we make any moves. Otherwise, it’s a major breaking change to update our implementations. For vNext we can start from day 1 with the new spec.

[arabsight]

you can use the legacy option with the new plugin, and if you’re using class-properties then the decorators plugin must come before class-properties pluginn and the later must must use loose mode:

const plugins = [
  ['@babel/plugin-proposal-decorators', { legacy: true }],
  ['@babel/plugin-proposal-class-properties', { loose: true }]
];