According to the Webpack 4 documentation, if I specify libraryTarget: 'umd' it should result in the following output:

(function webpackUniversalModuleDefinition(root, factory) {

  if(typeof exports === 'object' && typeof module === 'object')

    module.exports = factory();

  else if(typeof define === 'function' && define.amd)

    define([], factory);

  else if(typeof exports === 'object')

    exports[MyLibrary] = factory();

  else

    root[MyLibrary] = factory();

})(typeof self !== 'undefined' ? self : this, function() {

  return _entry_return_;

});

However, what I get is:

(function webpackUniversalModuleDefinition(root, factory) {

    if(typeof exports === 'object' && typeof module === 'object')

        module.exports = factory();

    else if(typeof define === 'function' && define.amd)

        define(lib, [], factory);

    else if(typeof exports === 'object')

        exports[lib] = factory();

    else

        root[lib] = factory();

})(window, function() {

return

To be more precise, instead of this

(typeof self !== 'undefined' ? self : this, function()

I get this:

(window, function()

This (obviously) causes runtime error window is undefined when importing in node environment.

To be clear:

I know that window doesn't exist in node applications. My question is not about this, but rather about webpack.

Is it a bug or am I missing something?

My output config:

output: {

    path: resolve(__dirname, 'umd'),

    filename: 'lib.js',

    libraryTarget: 'umd',

    library: 'lib',

    umdNamedDefine: true,

},