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var setterSrc = require("../../__set__.js").toString(),
getterSrc = require("../../__get__.js").toString(),
path = require("path"),
injectRewire = require("../injectRewire.js"),
getRewireRequires = require("../getRewireRequires.js"),
rewireIndex = path.resolve(__dirname, "../../index.js"),
rewireLib = path.join("rewire", "lib"),
settersAndGettersSrc;
/**
* This function can be added to browserify via b.use().
* @see https://github.com/substack/node-browserify/blob/master/doc/methods.markdown#methods
*
* It injects special code before every module in order to gain access to the private scope
* of the module. Additionally it forwards all calls of require("rewire") to the module
* browserifyRewire.js. Thus we don't need any cumbersome client/server-switches in the index.js.
*
* @param {browserify} b the bundle returned by browserify()
* @return {browserify} b
*/
function browserifyMiddleware(b) {
console.log("(DEPRECATED) rewire won't support browserify anymore. Please let me know if you're relying on this feature (https://github.com/jhnns/rewire/issues/13)");
/**
* Does actually the injecting of the special code. It is called by browserify for every
* js-module.
*
* @param {String} src
* @param {String} filename
* @return {String} src
*/
function doInjectRewire(src, filename) {
var rewireRequires;
// 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.
if (filename.indexOf(rewireLib) === -1) {
// Search for all rewire() statements an return the required path.
rewireRequires = getRewireRequires(src);
// Add all modules that are loaded by rewire() manually to browserify because browserify's
// require-sniffing doesn't work here.
rewireRequires.forEach(function forEachRewireRequire(requirePath) {
// Resolve to absolute paths
if (requirePath.charAt(0) === ".") {
requirePath = path.resolve(path.dirname(filename), requirePath);
}
b.require(requirePath);
});
// Injects the special code
src = injectRewire(src, settersAndGettersSrc);
// Because browserify doesn't create a new, independent module instance each time the module is
// executed we have to make it fake-independent. Thus the rewired module doesn't influence the original module.
// This is a crazy hack, but: hey don't blame me! Make a pull-request to browserify :)
src += ' module = require("rewire").getIndependentModule(module);';
}
return src;
}
/**
* Gets called before each module is loaded.
* This function ensures that lib/bundlers/browserify/browserifyRewire.js is returned instead of lib/index.js
*
* @param {String} filename
* @return {String} filename
*/
function forwardBrowserifyRewire(filename) {
if (filename === rewireIndex) {
filename = __dirname + "/browserifyRewire.js";
}
return filename;
}
// Register file handler
b.register(".js", doInjectRewire);
b.register("path", forwardBrowserifyRewire);
return b;
}
/**
* 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
* - override the internal require with a require proxy.
*
* @private
* @type {String}
*/
settersAndGettersSrc = (
'var rewire = require("rewire"); ' +
// Registers the setters and getters of every module according to their filename. These setter and getter
// allow us to gain access to the private scope of the module.
'rewire.register(__filename, module, ' + setterSrc + ', ' + getterSrc + '); ' +
// Overrides the module internal require with a require proxy. This proxy is necessary to call rewire with the
// module's filename at the first parameter to resolve the path. This way rewire() works exactly like require().
'require = rewire.getProxy(require, __dirname); ' +
// Cleaning up
'rewire = undefined;'
).replace(/\s+/g, " "); // strip out unnecessary spaces to be unobtrusive in the debug view
module.exports = browserifyMiddleware;
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