-
-
Save InTheFiveByFive/3085523 to your computer and use it in GitHub Desktop.
Pixels vs Bytes: Node.js require() for your browser
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// ==Closure.compiler== | |
// @compilation_level SIMPLE_OPTIMIZATIONS | |
// ==/Closure.compiler== | |
// Require 0.3.1 unstable | |
// | |
// Copyright 2012 Torben Schulz <http://pixelsvsbytes.com/> | |
// | |
// This program is free software: you can redistribute it and/or modify | |
// it under the terms of the GNU General Public License as published by | |
// the Free Software Foundation, either version 3 of the License, or | |
// (at your option) any later version. | |
// | |
// This program is distributed in the hope that it will be useful, | |
// but WITHOUT ANY WARRANTY; without even the implied warranty of | |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
// GNU General Public License for more details. | |
// | |
// You should have received a copy of the GNU General Public License | |
// along with this program. If not, see <http://www.gnu.org/licenses/>. | |
// | |
/////////////////////////////////////////////////////////////////////// | |
(function() { | |
'use strict'; | |
if (window.require !== undefined) | |
throw 'RequireException: \'require\' already defined in global scope'; | |
window.require = function(module, callback) { | |
var url = window.require.resolve(module); | |
if (require.cache[url]) { | |
// NOTE The callback should always be called asynchronously | |
callback && setTimeout(callback, 0); | |
return require.cache[url]; | |
} | |
var request = new XMLHttpRequest(); | |
request.onreadystatechange = function() { | |
if (request.readyState != 4) | |
return; | |
if (request.status != 200) | |
throw 'RequireException: '+request.status+' '+request.statustext+' ('+url+')'; | |
if (request.getResponseHeader('content-type').indexOf('application/json') != -1) { | |
window.require.cache[url] = JSON.parse(request.responseText); | |
} | |
else { | |
// INFO eval() could be used here, but appending a script node throws | |
// better exceptions (including line number) in case of an error. | |
var scriptNode = document.createElement('SCRIPT'); | |
scriptNode.type = 'text/javascript'; | |
scriptNode.text = '(function(){'+(window.require.strict?'\'use strict\';':'')+'var exports={};var module={exports: exports};\n'+request.responseText+'window.require.cache[\''+url+'\']=module.exports;\n})();' + '\n//\@ sourceURL=' + url; | |
document.getElementsByTagName('HEAD')[0].appendChild(scriptNode); | |
} | |
callback && callback(); | |
} | |
request.open('GET', url, !!callback); | |
request.send(); | |
return require.cache[url]; | |
} | |
window.require.resolve = function(module) { | |
var r = module.match(/^(\.{0,2}\/)?([^\.]*)(\..*)?$/); | |
return (r[1]?r[1]:'/node_modules/')+r[2]+(r[3]?r[3]:'/index.js'); | |
} | |
// INFO initializing module cache | |
window.require.cache = new Object(); | |
// INFO initializing strict mode toggle | |
window.require.strict = false; | |
})(); |
Added injection of //@ sourceURL to enable better debug breakpoints and stacktracing in Chrome/WebKit, but it's not working as expected..
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Changed lookup directory to be node_modules instead of js_modules, this way you can have an application structure which is compatible between node and browser runtime environments.