Huge bundle size

[karolis-sh]

Hi, I tried to launch your gatsby-starter-default-intl demo with added gatsby-plugin-webpack-bundle-analyzer. Despite only languages: ['en', 'ko', 'de'], being enabled, all of the locales are bundled with the app (this adds quite a significant amount of extra bundle size):

[jondavidjohn]

I built a tool to help you analyze webpack bundles for size regressions, and report them directly to GitHub PRs. It's free for open source, so it might be worth checking out and helpful in this scenario.

https://packtracker.io

[BowlingX]

This can be fixed with a gatsby-node.js file like this:
I would suggest to have this included based on the languages inside the plugin.

/**
 * Implement Gatsby's Node APIs in this file.
 *
 * See: https://www.gatsbyjs.org/docs/node-apis/
 */

// You can delete this file if you're not using it

const webpack = require('webpack')

exports.onCreateWebpackConfig = ({ actions: { setWebpackConfig } }) => {
  setWebpackConfig({
    plugins: [
      new webpack.ContextReplacementPlugin(/react-intl[/\\]locale-data$/, /de|en/)
    ]
  })
}

[wiziple]

@BowlingX Thanks!

@buz-zard This issue should be fixed on the next release.
Meanwhile, you can use by doing npm install --save gatsby-plugin-intl@beta