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babel.config.js
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babel.config.js
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// @flow
/**
* when running jest we need to use nodejs and not browser configurations
*/
const nodePlugins = {
plugins: [
'dynamic-import-node',
'@babel/plugin-transform-runtime',
['module-resolver', {
alias: {
'cardano-wallet-browser': 'cardano-wallet',
'@emurgo/js-chain-libs': '@emurgo/js-chain-libs-node',
}
}]
]
};
/*::
// https://babeljs.io/docs/en/config-files#config-function-api
type ApiType = { env: (void | string | Array<string>) => (string | boolean), ... };
*/
module.exports = function (api /*: ApiType */) {
return {
presets: [
[
'@babel/preset-env',
{
corejs: 3,
modules: (api.env('test') || api.env('jest')) ? 'commonjs' : 'auto',
useBuiltIns: 'entry'
}
],
'@babel/preset-flow',
'@babel/preset-react'
],
plugins: [
'@babel/plugin-proposal-nullish-coalescing-operator',
'@babel/plugin-proposal-optional-chaining',
'nameof-js',
[
'@babel/plugin-proposal-decorators',
{
legacy: true
}
],
[
'@babel/plugin-transform-runtime',
{
// CoreJS breaks Jest mocks for some reason
corejs: (api.env('test') || api.env('jest')) ? false : 3,
helpers: true,
regenerator: true
}
],
[
'react-intl',
{
messagesDir: './translations/messages/',
extractSourceLocation: true
}
],
'@babel/plugin-syntax-dynamic-import',
'add-module-exports',
[
'@babel/plugin-proposal-class-properties',
{
loose: true
}
],
'@babel/plugin-proposal-export-default-from',
'@babel/plugin-proposal-export-namespace-from',
...(api.env('development') || api.env('storybook')
? [
'react-hot-loader/babel',
]
: []),
],
env: {
cucumber: nodePlugins,
test: nodePlugins,
jest: nodePlugins,
}
};
};