ndugger ndugger -4 years ago 473
Javascript Question

Webpack not excluding node_modules

I'm using webpack for a Node framework that I'm building (though I should probably use gulp, admittedly). When I include the EJS module, webpack includes it in the compiled source, even though I explicitly tell it to exclude the node_modules dir.

module.exports = {
context: __dirname,
target: 'node',
// ...
output: {
libraryTarget: 'commonjs'
// ...
module: {
loaders: [
test: /\.js$/,
exclude: /node_modules/,
loader: 'babel-loader?{ "stage": 0, "optional": ["runtime"] }'

As you can see, I have a test for JS files, and I tell it to exclude node_modules; why is it ignoring my exclude?

Answer Source

From your config file, it seems like you're only excluding node_modules from being parsed with babel-loader, but not from being bundled.

In order to exclude node_modules and native node libraries from bundling, you need to:

  1. Add target: 'node' to your webpack.config.js. This will exclude native node modules (path, fs, etc.) from being bundled.
  2. Use webpack-node-externals in order to exclude other node_modules.

So your result config file should look like:

var nodeExternals = require('webpack-node-externals');
module.exports = {
    target: 'node', // in order to ignore built-in modules like path, fs, etc. 
    externals: [nodeExternals()], // in order to ignore all modules in node_modules folder 
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