Code coverage report for wrappers/browserify.js

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All files » wrappers/ » browserify.js
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/* global clearTimeout*/
var Promise = require('es6-promise').Promise;
var browserify = require('browserify');
var path = require('path');
var extend = require('util')._extend;
var watchify = require('watchify');
var fs = require('../utils/fs');
var File = require('../utils/file');
var log = require('../utils/log');
 
function wait(fileObjs){
    return new Promise(function(resolve, reject) {
        setTimeout(function(){ resolve(fileObjs); }, 100);
    });
}
 
 
function mapExternalFiles(vendorBundle) {
    if (!vendorBundle) return;
    return vendorBundle.map(function (v) {
        return (typeof v === 'string') ? v : v.expose;
    });
}
 
function bundle(b, fileObj, outFile, options) {
    var b_ws = fs.createWriteStream(path.resolve(outFile));
    b.bundle().pipe(b_ws);
    return new Promise(function(resolve, reject) {
        b_ws.end = function(){
            if (options.verbose) {
                log.info('   * ' + outFile + ' saved' );
            }
            fileObj.path = outFile;
            return resolve(fileObj);
        };
        b_ws.on('error', reject);
    });
}
 
function Watch (location, destination, options) {
    this.options = options || {};
    this.options.entries = options.fileObj.path;
    this.fileObj = options.fileObj;
    this.browserSync = options.browserSync;
    this.outFile = path.join(destination, this.fileObj.relativeDir, this.fileObj.name);
    var b = browserify(options, watchify.args);
    var vendor = mapExternalFiles(this.options.vendorBundle);
    if (vendor){
        b.external(vendor);
    }
    b.require(this.fileObj.path, {expose: this.fileObj.name.split('.')[0]});
        return this.file(b);
}
 
Watch.prototype.reloadOnce = function() {
    clearTimeout(this.reloadTimout);
    this.reloadTimout = setTimeout(this.browserSync.reload, 150);
};
 
Watch.prototype.file = function(b) {
    var self = this;
    this.w = watchify(b); //, { delay: 1000 }
    if (this.options.verbose) {
        var  file = path.join(this.fileObj.relativeDir || '', this.fileObj.name );
        log.info('   * watch ' + file);
    }
    this.w.on('update', function () {
            bundle(self.w, self.fileObj, self.outFile, self.options).then(self.reloadOnce.bind(self)).catch(log.onError);
    });
    this.w.bundle();
};
 
 
function Browserify(location, destination, options){
    this.location = location;
    this.destination = destination;
    this.options = options || {};
    this.checkForDeboweify();
}
 
Browserify.prototype.checkForDeboweify = function(){
    var options = this.options;
    if (options.vendorBundle && options.browserify && options.browserify.transform && options.browserify.transform.indexOf('debowerify')>-1){
        log.onError([
            'The browserify transform `debowerify` does not currenlty work with `vendorBundle`.',
            'Please remove `debowerify` from browserify.transform within your package.json.',
            ' * https://github.com/eugeneware/debowerify/issues/62'
        ].join('\n'));
    }
};
 
Browserify.prototype.buildVendor = function(fileObj, options){
    if (!options.vendorBundle) return Promise.resolve();
    delete this.options.entries;
    var outFile = path.join(this.destination, options.vendorTarget);
    var vendorFile = new File({ path: outFile });
    var v_ws = fs.createWriteStream(vendorFile.path);
    browserify().require(options.vendorBundle).bundle().pipe(v_ws);
    return new Promise(function(resolve, reject) {
        v_ws.end = function(){
            return resolve(vendorFile);
        };
        v_ws.on('error', reject);
    });
};
 
Browserify.prototype.file = function(fileObj, browserSync) {
    var options = this.options || {};
    options.entries = fileObj.path;
    var b = browserify(options, (browserSync) ? watchify.args : undefined);
    var vendor = mapExternalFiles(this.options.vendorBundle);
    if (vendor){
        b.external(vendor);
    }
    b.add(fileObj.path);
    b.require(fileObj.path, {expose: fileObj.name.split('.')[0]});
    var  newFile = path.join(this.destination, fileObj.relativeDir, fileObj.name);
    if (options.verbose) {
        var  file = path.join(fileObj.relativeDir || '', fileObj.name );
        log.info('   * ' + file + ' > ' + newFile);
    }
    return bundle(b, fileObj, newFile, options);
};
 
Browserify.prototype.watch = function(browserSync) {
    var self = this;
    return fs.glob(this.location).then(function(fileObjs) {
        fileObjs.forEach(function (fileObj, i) {
            var options = extend(self.options || {},{
                fileObj: fileObj,
                browserSync:browserSync
            });
            new Watch(self.location, self.destination, options);
        });
    }).catch(log.onError);
};
 
Browserify.prototype.write = function(){
    var self = this;
    var options = this.options || {};
    return fs.glob(this.location).then(function(fileObjs){
        if (options.verbose && fileObjs.length===0){
            log.info('no .js files found within `' + self.location + '`');
        }
        var promises = [];
        fileObjs.forEach(function (fileObj, i) {
            promises.push(self.file(fileObj));
        });
        if (options.vendorBundle){
            options.vendorBundle.forEach(function (vendorObj, i) {
                var fileObj = new File({ path: vendorObj.file || vendorObj });
                if (options.verbose) {
                    var  file = path.join(fileObj.relativeDir || '', fileObj.name );
                    log.info('   * Read vendor file ' + file );
                }
                promises.push(self.buildVendor(fileObj, options));
            });
        }
        return Promise.all(promises);
    }).then(function(fileObjs){
        return wait(fileObjs);
    }).then(function(fileObjs){
        if (!self.options.minify || self.options.dev) return Promise.resolve();
        return self.minify(fileObjs);
    });
};
 
 
Browserify.prototype.minify = function(fileObjs) {
    log.info(' * Minifying Scripts: ' + this.destination );
    var Minify = require('./uglifyjs' );
    var promises = [];
    var self = this;
    fileObjs.forEach(function(fileObj){
        if (self.options.verbose) {
            var file = path.join(fileObj.relativeDir || '', fileObj.name);
            log.info('   * ' + file);
        }
        promises.push(new Minify(fileObj).write().catch(log.warn));
    });
    return Promise.all(promises).catch(log.warn);
};
module.exports = Browserify;