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"use strict"; // run code in ES5 strict mode
var setterSrc = require("../../__set__.js").toString(),
getterSrc = require("../../__get__.js").toString(),
path = require("path"),
injectRewire = require("../injectRewire.js"),
getRewireRegExp = require("../getRewireRegExp.js"),
rewireLib = path.join("rewire", "lib"),
webpackBuildin = path.join("webpack", "buildin", "__webpack"),
settersAndGettersSrc;
/**
* Injects special code so rewire gains access to the module's private scope.
*
* Furthermore it changes all calls of rewire("some/path") to rewire("some/path", require("some/path")) so webpack
* recognizes the additional dependency. This also enables rewire to resolve the module because webpack replaces all
* paths to numeric ids.
*
* @param {!String} src
* @return {String} src
*/
function webpackLoader(src) {
var filename = this.request.split("!").pop(),
rewireRegExp = getRewireRegExp();
// We don't want to inject this code at the beginning of a rewire/lib-module. Otherwise
// it would cause a black hole that devours our universe.
// We're also omitting webpack's buildin because it doesn't makes sense to rewire these modules. There's also
// a bug if the special code is injecting into these modules.
if (filename.indexOf(rewireLib) === -1 && filename.indexOf(webpackBuildin) === -1) {
// replaces rewire("some/path") into rewire("some/path", require("some/path"))
src = src.replace(rewireRegExp, '$1rewire("$2", require("$2"))');
// Inject special code
src = injectRewire(src, settersAndGettersSrc);
}
return src;
}
webpackLoader.loader = __filename;
webpackLoader.test = /\.js$/;
/**
* This string gets injected at the beginning of every module. Its purpose is to
* - register the setters and getters according to the module's filename
*
* @private
* @type {String}
*/
settersAndGettersSrc = (
'var rewire = require("rewire"); ' +
// Registers the setters and getters of every module according to their filename. The setters and getters must be
// injected as string here to gain access to the private scope of the module.
'rewire.register(module, ' + setterSrc + ', ' + getterSrc + '); ' +
// Cleaning up
'rewire = undefined;'
).replace(/\s+/g, " "); // strip out unnecessary spaces to be unobtrusive in the debug view
module.exports = webpackLoader;
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