paper.js/src/load.js

/*
 * Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
 * http://paperjs.org/
 *
 * Copyright (c) 2011 - 2016, Juerg Lehni & Jonathan Puckey
 * http://scratchdisk.com/ & http://jonathanpuckey.com/
 *
 * Distributed under the MIT license. See LICENSE file for details.
 *
 * All rights reserved.
 */

// This file uses PrePro to preprocess the paper.js source code on the fly in
// the browser, avoiding the step of having to manually preprocess it after each
// change. This is very useful during development of the library itself.
if (typeof window === 'object') {
    // Browser based loading through PrePro:
    if (!window.include) {
        var scripts = document.getElementsByTagName('script');
        var src = scripts[scripts.length - 1].getAttribute('src');
        // Assume that we're loading browser.js from a root folder, either
        // through dist/paper-full.js, or directly through src/load.js, and
        // match root as all the parts of the path that lead to that folder.
        var root = src.match(/^(.*\/)\w*\//)[1];
        // First load the PrePro's browser.js file, which provides the include()
        // function for the browser.
        document.write('<script type="text/javascript" src="' + root
                + 'node_modules/prepro/lib/browser.js"></script>');
        // Now that we have include(), load this file again, which will execute
        // the lower part of the code the 2nd time around.
        document.write('<script type="text/javascript" src="' + root
                + 'src/load.js"></script>');
    } else {
        include('options.js');
        include('paper.js');
    }
} else {
    // Node based loading through PrePro:
    var prepro = require('prepro/lib/node.js');
    // Include deafult browser options.
    // Step out and back into src in case this is loaded from dist/paper-node.js
    prepro.include('../src/options.js');
    // Override node specific options.
    prepro.setOptions({
        environment: 'node',
        legacy: false,
        version: 'dev'
    });
    // Load Paper.js library files.
    prepro.include('../src/paper.js');
}