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loader

README.md

example.js

// use our loader
console.dir(require("./loader!./file"));

// use buildin json loader
console.dir(require("./test.json")); // default by extension
console.dir(require("!json!./test.json")); // manual

file.js

exports.foo = "bar";

loader.js

module.exports = function(content) {
	return "exports.answer = 42;\n" + content;
}

test.json

{
	"foobar": 1234
}

js/output.js

/******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};

/******/ 	// The require function
/******/ 	function __webpack_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(module.exports, module, module.exports, __webpack_require__);

/******/ 		// Flag the module as loaded
/******/ 		module.loaded = true;

/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}


/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;

/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;

/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "js/";

/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(__webpack_require__.s = 2);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/*!*******************************************!*\
  !*** (webpack)/~/json-loader!./test.json ***!
  \*******************************************/
/***/ function(module, exports) {

	module.exports = {
		"foobar": 1234
	};

/***/ },
/* 1 */
/*!*****************************!*\
  !*** ./loader.js!./file.js ***!
  \*****************************/
/***/ function(module, exports) {

	exports.answer = 42;
	exports.foo = "bar";

/***/ },
/* 2 */
/*!********************!*\
  !*** ./example.js ***!
  \********************/
/***/ function(module, exports, __webpack_require__) {

	// use our loader
	console.dir(__webpack_require__(/*! ./loader!./file */ 1));

	// use buildin json loader
	console.dir(__webpack_require__(/*! ./test.json */ 0)); // default by extension
	console.dir(__webpack_require__(/*! json!./test.json */ 0)); // manual

/***/ }
/******/ ]);

Console output

Prints in node.js (enhanced-require example.js) and in browser:

{ answer: 42, foo: 'bar' }
{ foobar: 1234 }
{ foobar: 1234 }

Info

Uncompressed

Hash: ce3e1279e28ab4e51a8d
Version: webpack 2.0.6-beta
Time: 79ms
    Asset     Size  Chunks             Chunk Names
output.js  2.22 kB       0  [emitted]  main
chunk    {0} output.js (main) 283 bytes [rendered]
    > main [2] ./example.js 
    [0] (webpack)/~/json-loader!./test.json 37 bytes {0} [built]
        cjs require !json!./test.json [2] ./example.js 6:12-40
        cjs require ./test.json [2] ./example.js 5:12-34
    [1] ./loader.js!./file.js 41 bytes {0} [built]
        cjs require ./loader!./file [2] ./example.js 2:12-38
    [2] ./example.js 205 bytes {0} [built]

Minimized (uglify-js, no zip)

Hash: ce3e1279e28ab4e51a8d
Version: webpack 2.0.6-beta
Time: 221ms
    Asset       Size  Chunks             Chunk Names
output.js  358 bytes       0  [emitted]  main
chunk    {0} output.js (main) 283 bytes [rendered]
    > main [2] ./example.js 
    [0] (webpack)/~/json-loader!./test.json 37 bytes {0} [built]
        cjs require !json!./test.json [2] ./example.js 6:12-40
        cjs require ./test.json [2] ./example.js 5:12-34
    [1] ./loader.js!./file.js 41 bytes {0} [built]
        cjs require ./loader!./file [2] ./example.js 2:12-38
    [2] ./example.js 205 bytes {0} [built]
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