Webpack Env

Webpack ENV is a webpack plug-in for creating ENV-variable-like globals in webpack.

Setup

First add Webpack Env as a webpack plug-in, using gulp this would look something like this:

//gulpfile.js
var gulp = require('gulp');
var webpack = require('webpack');
var webpackEnv = require('webpack-env');

gulp.task('webpack', function() {
  return gulp.src('./entry.js')
    .pipe(webpack({
      output: {
        filename: 'bundle.js'
      },
      plugins: [webpackEnv]
    }))
    .pipe(gulp.dest('build/'));
});

Create a .env.js file in the same directory as your gulpfile.js. This file should export an object that contains the eventual globals you want your webpack code to contain:

module.exports = {
  SOME_VAR: 'some val'
}

Multiple Environments

Weback Env also supports having multiple files for multiple environments. To create a set of Production environment globals, just create a .production_env.js file and run gulp with NODE_ENV set to 'production'.

Keep your secrets out of the repo

Be sure you've added all your .env files to your .gitignore.