Module Variables#

This section covers all variables available in code compiled with webpack. Modules will have access to certain data from the compilation process through module and other variables.

module.hot (webpack-specific)#

Indicates whether or not Hot Module Replacement is enabled and provides an interface to the process. See the HMR API page for details.

import.meta.webpackHot (webpack-specific)#

An alias for module.hot, however import.meta.webpackHot can be used in strict ESM while module.hot can't.

__dirname (NodeJS)#

Depending on the configuration option node.__dirname:

• false: Not defined
• mock: equal to '/'
• true: node.js __dirname

If used inside an expression that is parsed by the Parser, the configuration option is treated as true.

__resourceQuery (webpack-specific)#

The resource query of the current module. If the following require call was made, then the query string would be available in file.js.

require('file.js?test');

__resourceQuery === '?test';

__webpack_modules__ (webpack-specific)#

Access to the internal object of all modules.

__webpack_hash__ (webpack-specific)#

It provides access to the hash of the compilation.

__webpack_public_path__ (webpack-specific)#

Equals the configuration option's output.publicPath.

__webpack_chunkname__ (webpack-specific)#

Access to name of current chunk.

__webpack_runtime_id__ (webpack-specific)#

Access the runtime id of current entry.