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babel.config.ts
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babel.config.ts
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const nodeEnv = process.env.NODE_ENV || 'development';
const BABEL_PRESET_TARGETS = {
// wechat dev tools use Chrome 60.0.3112.113
// see `/Applications/wechatwebdevtools.app/Contents/Versions`
development: {
browsers: 'Chrome >= 60',
},
// use .browserslistrc in prod mode
production: undefined,
test: {
node: '10',
},
};
const BABEL_MODULES = {
development: false,
production: false,
test: 'commonjs',
};
module.exports = {
presets: [
[
require.resolve('@babel/preset-env'),
{
modules: BABEL_MODULES[nodeEnv],
targets: BABEL_PRESET_TARGETS[nodeEnv],
},
],
require.resolve('@babel/preset-typescript'),
require.resolve('@babel/preset-react'),
require.resolve('linaria/babel'),
],
plugins: [
[require.resolve('@babel/plugin-proposal-class-properties'), { loose: true }],
[require.resolve('@babel/plugin-transform-runtime'), { useESModules: true }],
[require.resolve('@babel/plugin-proposal-optional-chaining'), { loose: true }],
[require.resolve('@babel/plugin-proposal-nullish-coalescing-operator'), { loose: true }],
],
// https://github.com/webpack/webpack/issues/4039#issuecomment-419284940
// https://babeljs.io/docs/en/options#sourcetype
// https://github.com/babel/babel/issues/8900
sourceType: 'unambiguous',
};