webpack/examples/require.context

example.js

function getTemplate(templateName) {
	return require("./templates/"+templateName);
}
console.log(getTemplate("a"));
console.log(getTemplate("b"));

templates/

• a.js
• b.js
• c.js

All templates are of this pattern:

module.exports = function() {
	return "This text was generated by template X";
}

js/output.js

/******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/ 	
/******/ 	// The require function
/******/ 	function require(moduleId) {
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId])
/******/ 			return installedModules[moduleId].exports;
/******/ 		
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			exports: {},
/******/ 			id: moduleId,
/******/ 			loaded: false
/******/ 		};
/******/ 		
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(null, module, module.exports, require);
/******/ 		
/******/ 		// Flag the module as loaded
/******/ 		module.loaded = true;
/******/ 		
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/ 	
/******/ 	// The bundle contains no chunks. A empty chunk loading function.
/******/ 	require.e = function requireEnsure(_, callback) {
/******/ 		callback.call(null, require);
/******/ 	};
/******/ 	
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	require.modules = modules;
/******/ 	
/******/ 	// expose the module cache
/******/ 	require.cache = installedModules;
/******/ 	
/******/ 	
/******/ 	// Load entry module and return exports
/******/ 	return require(0);
/******/ })
/************************************************************************/
/******/ ({
/******/ // __webpack_public_path__
/******/ c: "",

/***/ 0:
/*!********************!*\
  !*** ./example.js ***!
  \********************/
/***/ function(module, exports, require) {

	function getTemplate(templateName) {
		return require(/*! ./templates */ 4)("./"+templateName);
	}
	console.log(getTemplate("a"));
	console.log(getTemplate("b"));

/***/ },

/***/ 1:
/*!************************!*\
  !*** ./templates/a.js ***!
  \************************/
/***/ function(module, exports, require) {

	module.exports = function() {
		return "This text was generated by template A";
	}

/***/ },

/***/ 2:
/*!************************!*\
  !*** ./templates/b.js ***!
  \************************/
/***/ function(module, exports, require) {

	module.exports = function() {
		return "This text was generated by template B";
	}

/***/ },

/***/ 3:
/*!************************!*\
  !*** ./templates/c.js ***!
  \************************/
/***/ function(module, exports, require) {

	module.exports = function() {
		return "This text was generated by template C";
	}

/***/ },

/***/ 4:
/*!****************************!*\
  !*** ./templates ^\.\/.*$ ***!
  \****************************/
/***/ function(module, exports, require) {

	var map = {
		"./a": 1,
		"./a.js": 1,
		"./b": 2,
		"./b.js": 2,
		"./c": 3,
		"./c.js": 3
	};
	function webpackContext(req) {
		return require(webpackContextResolve(req));
	};
	function webpackContextResolve(req) {
		return map[req] || (function() { throw new Error("Cannot find module '" + req + "'.") }());
	};
	webpackContext.keys = function webpackContextKeys() {
		return Object.keys(map);
	};
	webpackContext.resolve = webpackContextResolve;
	module.exports = webpackContext;
	

/***/ }
/******/ })

Info

Uncompressed

Hash: 740455ffb121aee6bb93c7638ec1b15d
Version: webpack 0.10.0-beta6
Time: 35ms
    Asset  Size  Chunks             Chunk Names
output.js  3210       0  [emitted]  main       
chunk    {0} output.js (main) 603 [rendered]
    [0] ./example.js 146 [built] {0}
    [1] ./templates/a.js 80 [built] {0}
        context element ./a [4] ./templates ^\.\/.*$
        context element ./a.js [4] ./templates ^\.\/.*$
    [2] ./templates/b.js 80 [built] {0}
        context element ./b [4] ./templates ^\.\/.*$
        context element ./b.js [4] ./templates ^\.\/.*$
    [3] ./templates/c.js 80 [built] {0}
        context element ./c [4] ./templates ^\.\/.*$
        context element ./c.js [4] ./templates ^\.\/.*$
    [4] ./templates ^\.\/.*$ 217 [built] {0}
        cjs require context ./templates [0] ./example.js 2:8-44

Minimized (uglify-js, no zip)

Hash: 740455ffb121aee6bb93c7638ec1b15d
Version: webpack 0.10.0-beta6
Time: 88ms
    Asset  Size  Chunks             Chunk Names
output.js   844       0  [emitted]  main       
chunk    {0} output.js (main) 603 [rendered]
    [0] ./example.js 146 [built] {0}
    [1] ./templates/a.js 80 [built] {0}
        context element ./a [4] ./templates ^\.\/.*$
        context element ./a.js [4] ./templates ^\.\/.*$
    [2] ./templates/b.js 80 [built] {0}
        context element ./b [4] ./templates ^\.\/.*$
        context element ./b.js [4] ./templates ^\.\/.*$
    [3] ./templates/c.js 80 [built] {0}
        context element ./c [4] ./templates ^\.\/.*$
        context element ./c.js [4] ./templates ^\.\/.*$
    [4] ./templates ^\.\/.*$ 217 [built] {0}
        cjs require context ./templates [0] ./example.js 2:8-44

Code Splitting

See this example combined with code splitting