webpack/examples/loader/README.md

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# example.js
``` javascript
// use our loader
console.dir(require("./loader!./file"));
// use buildin json loader
console.dir(require("./test.json")); // default by extension
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console.dir(require("!json!./test.json")); // manual
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```
# file.js
``` javascript
exports.foo = "bar";
```
# loader.js
``` javascript
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module.exports = function(content) {
return "exports.answer = 42;\n" + content;
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}
```
# test.json
``` javascript
{
"foobar": 1234
}
```
# js/output.js
``` javascript
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/******/ (function webpackBootstrap(modules) {
/******/ var installedModules = {};
/******/ function require(moduleId) {
/******/ if(installedModules[moduleId])
/******/ return installedModules[moduleId].exports;
/******/ var module = installedModules[moduleId] = {
/******/ exports: {},
/******/ id: moduleId,
/******/ loaded: false
/******/ };
/******/ modules[moduleId].call(null, module, module.exports, require);
/******/ module.loaded = true;
/******/ return module.exports;
/******/ }
/******/ require.e = function requireEnsure(chunkId, callback) {
/******/ callback.call(null, require);
/******/ };
/******/ require.modules = modules;
/******/ require.cache = installedModules;
/******/ return require(0);
/******/ })({
/******/ c: "",
/***/ 0:
/*!********************!*\
!*** ./example.js ***!
\********************/
/***/ function(module, exports, require) {
// use our loader
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console.dir(require(/*! ./loader!./file */ 2));
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// use buildin json loader
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console.dir(require(/*! ./test.json */ 1)); // default by extension
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console.dir(require(/*! json!./test.json */ 1)); // manual
/***/ },
/***/ 1:
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/*!*******************************************!*\
!*** (webpack)/~/json-loader!./test.json ***!
\*******************************************/
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/***/ function(module, exports, require) {
module.exports = {
"foobar": 1234
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}
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/***/ },
/***/ 2:
/*!*****************************!*\
!*** ./loader.js!./file.js ***!
\*****************************/
/***/ function(module, exports, require) {
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exports.answer = 42;
exports.foo = "bar";
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/***/ }
/******/ })
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```
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# Console output
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Prints in node.js (`enhanced-require example.js`) and in browser:
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```
{ answer: 42, foo: 'bar' }
{ foobar: 1234 }
{ foobar: 1234 }
```
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# Info
## Uncompressed
```
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Hash: 2f64cd43907e15c39cc8d84534efe0a2
Time: 52ms
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Asset Size Chunks Chunk Names
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output.js 1620 0 main
chunk {0} output.js (main) 282
[0] ./example.js 205 [built] {0}
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[1] (webpack)/~/json-loader!./test.json 36 [built] {0}
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cjs require ./test.json [0] ./example.js 5:12-34
cjs require !json!./test.json [0] ./example.js 6:12-40
[2] ./loader.js!./file.js 41 [not cacheable] [built] {0}
cjs require ./loader!./file [0] ./example.js 2:12-38
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```