toloframework/lib/minifyJS.js

Javascript/HTML/CSS compiler for Firefox OS or nodewebkit apps using modules in the nodejs style.

var Fatal = require("./fatal");
var UglifyJS = require("uglify-js");


/**
 * @param args {object} -
 *   * __name__ {string}: Name of the Javascript.
 *   * __content__ {string}: Javascript source content.
 *
 * @return
 *   * __src__ {string}: Verbatim Javascript source content.
 *   * __zip__ {string}: Minified version of the Javascript content.
 *   * __map__ {object}: SourceMap object.
 */
module.exports = function(args) {
    try {
        var minification = UglifyJS.minify(args.content, {
            compress: true,
            fromString: true,
            outSourceMap: args.name + ".map"
        });
        var sourceMap = JSON.parse(minification.map);
        sourceMap = {
            version: sourceMap.version,
            file: sourceMap.file,
            sources: [args.name],
            sourcesContent: [args.content],
            names: sourceMap.names,
            mappings: sourceMap.mappings
        };
        return {src: args.content, zip: minification.code, map: sourceMap};
    }
    catch (ex) {
        Fatal.fire( 
            ex.message + "\n\n"
            + Fatal.extractCodeAtPos( args.content, ex.pos ),
            args.name, 
            args.name 
        );
    }
};