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module.exports = function(api) {
var validEnv = ['development', 'test', 'production']
var currentEnv = api.env()
var isDevelopmentEnv = api.env('development')
var isProductionEnv = api.env('production')
var isTestEnv = api.env('test')
if (!validEnv.includes(currentEnv)) {
throw new Error(
'Please specify a valid `NODE_ENV` or ' +
'`BABEL_ENV` environment variables. Valid values are "development", ' +
'"test", and "production". Instead, received: ' +
JSON.stringify(currentEnv) +
'.'
)
}
return {
presets: [
isTestEnv && [
require('@babel/preset-env').default,
{
targets: {
node: 'current'
}
}
],
(isProductionEnv || isDevelopmentEnv) && [
require('@babel/preset-env').default,
{
forceAllTransforms: true,
useBuiltIns: 'entry',
modules: false,
exclude: ['transform-typeof-symbol']
}
]
].filter(Boolean),
plugins: [
require('babel-plugin-macros'),
require('@babel/plugin-syntax-dynamic-import').default,
isTestEnv && require('babel-plugin-dynamic-import-node'),
require('@babel/plugin-transform-destructuring').default,
[
require('@babel/plugin-proposal-class-properties').default,
{
loose: true
}
],
[
require('@babel/plugin-proposal-object-rest-spread').default,
{
useBuiltIns: true
}
],
[
require('@babel/plugin-transform-runtime').default,
{
helpers: false,
regenerator: true
}
],
[
require('@babel/plugin-transform-regenerator').default,
{
async: false
}
]
].filter(Boolean)
}
}
|
