npm install --save-dev json-loader

⚠️ Since webpack >= v2.0.0, importing of JSON files will work by default. You might still want to use this if you use a custom file extension. See the v1.0.0 -> v2.0.0 Migration Guide for more information

Inline

const json = require('json-loader!./file.json');

Configuration (recommended)

const json = require('./file.json');

webpack.config.js

module.exports = {
  module: {
    loaders: [
      {
        test: /\.json$/,
        loader: 'json-loader'
      }
    ]
  }
}