Medium: Deploy private source maps with Netlify

config-overrides.js

const webpack = require('webpack')

function setSourceMaps (config, env) {
  config.devtool = false
  if (!config.plugins) {
    config.plugins = []
  }
  config.plugins.push(
    new webpack.SourceMapDevToolPlugin({
      append:
        env === 'development'
          ? '\n//# sourceMappingURL=[url]'
          : '\n//# sourceMappingURL=https://storage.cloud.google.com/<bucket-name>/[url]',
      filename: '[file].map'
    })
  )
  return config
}

module.exports = {
  webpack: (config, env) => {
    config = setSourceMaps(config, env)
    return config
  }
}