expose loader module for webpack
Latest commit f2076fd Feb 22, 2017 @SpaceK33z SpaceK33z committed on GitHub Merge pull request #37 from wgiddens/patch-1
Fix Typo


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Expose Loader

The expose loader adds modules to the global object. This is useful for debugging, or supporting libraries that depend on libraries in globals.


npm i expose-loader --save


Note: Modules must be require()'d within in your bundle, or they will not be exposed.

// Exposes the exports for file.js to the global context on property "libraryName".
// In web browsers, window.libraryName is then available.

This line works to expose React to the web browser to enable the Chrome React devtools:


Thus, window.React is then available to the Chrome React devtools extension.

Alternately, you can set this in your config file:

module: {
  loaders: [
    { test: require.resolve("react"), loader: "expose-loader?React" }

Also for multiple expose you can use ! in loader string:

module: {
  loaders: [
    { test: require.resolve("jquery"), loader: "expose-loader?$!expose-loader?jQuery" },

The require.resolve is a node.js call (unrelated to require.resolve in webpack processing -- check the node.js docs instead). require.resolve gives you the absolute path to the module ("/.../app/node_modules/react/react.js"). So the expose only applies to the react module. And it's only exposed when used in the bundle.

Documentation: Using loaders


Juho Vepsäläinen

Joshua Wiens

Kees Kluskens

Sean Larkin