Webpack fails to parse modules that use a json file as the index

Hi there!

When I require the module https://github.com/dfcreative/color-name, Webpack fails with the following error:

ERROR in ./~/color-name/index.json
Module parse failed: [redacted]/node_modules/color-name/index.json Line 2: Unexpected token :
You may need an appropriate loader to handle this file type.
| {
|   "aliceblue": [240, 248, 255],
|   "antiquewhite": [250, 235, 215],
|   "aqua": [0, 255, 255],
 @ ./app/client/index.jsx 17:8-29

And it’s because the color-name module specifies index.json as the module entrypoint in its package.json.

When I change the filename inside that module to index.js and modify it to use module.exports = ... everything works fine.

I tried addding json-loader to my webpack config, but it looks like webpack expects only to find .js files when requiring something from node_modules.

It’s strange that the color-name module uses a json file as its index, but Node supports it, so it seems like Webpack maybe should too?

Author: Fantashit

7 thoughts on “Webpack fails to parse modules that use a json file as the index

  1. Sorry I’ve taken so long to get back, here’s what my webpack config looks like:

    var path = require('path')
    module.exports = {
      entry: "./app/client/index.jsx",
      output: {
        path: path.join(__dirname, 'app', 'static', 'generated'),
        filename: 'bundle.js'
      resolve: {
        extensions: ['', '.js', '.jsx', 'index.js', 'index.jsx', '.json', 'index.json']
      module: {
        preLoaders: [
            { test: /\.json$/, exclude: /node_modules/, loader: 'json'},
        loaders: [
            { test: /\.js$/, exclude: /node_modules/, loader: 'babel'},
            { test: /\.jsx$/, exclude: /node_modules/, loader: 'babel'},
            { test: /\.css$/, exclude: /static/, loader: 'style!css'}
      devtool: '#eval'
  2. module.exports = {
        module: {
            loaders: [
                { test: /\.json$/, loader: "json-loader" }
    webpack color-name bundle.js

    works fine.

  3. I am so sorry.

    This is very embarrassing. It does, in fact, work fine. I was editing the wrong webpack config.


  4. I had this problem because I was applying the babel-loader to json files. I did this:

      test: /\.js/,
      use: 'babel-loader'

    I fixed it by doing this:

      test: /\.js$/,
      use: 'babel-loader'

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