Usage of Promise in webpack / react application - reactjs

Question

I am trying to use Promise in an react app using webpack but I have this error :
'Promise' is not defined no-undef
So far, everything was working well (used babel to translate js and jsx) but unfortunately Promise does not work.
Furthermore, I have this error in Chrome (latest) and I though Promise was buildin feature.... Am I right ?
Here is a piece of config that I use (I used survivejs kanban app as a starter, I am trying to add some functionalities). I did not change much the initial config :
From web pack.config.js
module: {
loaders: [
{
test: /\.(js|jsx)$/,
// Enable caching for extra performance
loaders: ['babel?cacheDirectory'],
include: include
}
]
}
From .babelrc
{
"presets": [
"es2015",
"react"
],
"env": {
"start": {
"presets": [
"react-hmre"
]
}
}
}
Failing code :
const locales = {
en: () => require('react-intl?locale=en!./en.json'),
fr: () => require('react-intl?locale=fr!./fr.json')
}
function loadLocaleData (locale) {
return new Promise((resolve) => {
locales[locale]()(resolve)
})
}
THE VALID ANSWER IS IN COMMENTS

Answer 1

So far as I know you need te include a Promise polyfill in your webpack config. I use:
plugins: [
new webpack.ProvidePlugin({
'Promise': 'exports?global.Promise!es6-promise'
})
],
Where es6-promise is a npm package which will be include when no promise is available or added by any other npm package