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Add require.js paths option to alias paths to external libraries. #2

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Add require.js paths option to alias paths to external libraries. #2

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39 changes: 25 additions & 14 deletions lib/amd-loader.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,22 +5,24 @@ var Module = require("module");
var moduleStack = [];
var defaultCompile = module.constructor.prototype._compile;

module.constructor.prototype._compile = function(content, filename){
module.constructor.prototype._compile = function(content, filename){
moduleStack.push(this);
try {
try {
return defaultCompile.call(this, content, filename);
}
finally {
moduleStack.pop();
}
};

var paths = exports.paths = {};

global.define = function (id, injects, factory) {

// infere the module
var currentModule = moduleStack[moduleStack.length-1];
var module = currentModule || require.main;

// parse arguments
if (!factory) {
// two or less arguments
Expand All @@ -36,7 +38,7 @@ global.define = function (id, injects, factory) {
}
else{
// anonymous, deps included
injects = id;
injects = id;
}
}
else {
Expand All @@ -51,29 +53,38 @@ global.define = function (id, injects, factory) {
// async require
return callback.apply(this, relativeId.map(req))
}

var chunks = relativeId.split("!");
if (chunks.length >= 2) {
var prefix = chunks[0];
relativeId = chunks.slice(1).join("!");
}

var id = Module._resolveFilename(relativeId, module)[0];


for (var _path in paths) {
if (relativeId.slice(0, _path.length) == _path) {
var replace = paths[_path];
relativeId = replace + relativeId.slice(_path.length);
break;
}
}

var id = Module._resolveFilename(relativeId, module);

if (prefix && prefix.indexOf("text") !== -1) {
return fs.readFileSync(id);
} else
} else {
return require(id);
}
}.bind(this, module);

injects.unshift("require", "exports", "module");
injects.push("require", "exports", "module");

id = module.id;
if (typeof factory !== "function") {
// we can just provide a plain object
return module.exports = factory;
}

var returned = factory.apply(module.exports, injects.map(function (injection) {
switch (injection) {
// check for CommonJS injection variables
Expand All @@ -85,9 +96,9 @@ global.define = function (id, injects, factory) {
return req(injection);
}
}));

if (returned) {
// since AMD encapsulates a function/callback, it can allow the factory to return the exports.
module.exports = returned;
}
};
};