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Target Babel to latest Chrome Versions in dev (#3806)

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* Use `babel-preset-env` to target Babel to latest Chrome Versions

* Opt-In mechanism for Babel Preset Env
This commit is contained in:
Nicolas Gotchac 2016-12-11 15:05:10 +01:00 committed by Jaco Greeff
parent 95af942fc9
commit d3077c51fc
2 changed files with 24 additions and 0 deletions
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1
js/package.json
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@ -59,6 +59,7 @@
"babel-plugin-transform-runtime": "6.15.0", "babel-plugin-transform-runtime": "6.15.0",
"babel-plugin-webpack-alias": "2.1.2", "babel-plugin-webpack-alias": "2.1.2",
"babel-polyfill": "6.20.0", "babel-polyfill": "6.20.0",
"babel-preset-env": "1.0.2",
"babel-preset-es2015": "6.18.0", "babel-preset-es2015": "6.18.0",
"babel-preset-es2016": "6.16.0", "babel-preset-es2016": "6.16.0",
"babel-preset-es2017": "6.16.0", "babel-preset-es2017": "6.16.0",

23
js/webpack/shared.js
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@ -36,6 +36,29 @@ function getBabelrc () {
// [ "es2015", { "modules": false } ] // [ "es2015", { "modules": false } ]
babelrc.presets[es2015Index] = [ 'es2015', { modules: false } ]; babelrc.presets[es2015Index] = [ 'es2015', { modules: false } ];
babelrc['babelrc'] = false; babelrc['babelrc'] = false;
const BABEL_PRESET_ENV = process.env.BABEL_PRESET_ENV;
const npmStart = process.env.npm_lifecycle_event === 'start';
const npmStartApp = process.env.npm_lifecycle_event === 'start:app';
if (BABEL_PRESET_ENV && (npmStart || npmStartApp)) {
console.log('using babel-preset-env');
babelrc.presets = [
// 'es2017',
'stage-0', 'react',
[
'env',
{
targets: { browsers: ['last 2 Chrome versions'] },
modules: false,
loose: true,
useBuiltIns: true
}
]
];
}
return babelrc; return babelrc;
} }