Google Maps API with Browserify


Having to manually run the gulp bundle task after saving source code edits is how the gulp workflow from the previous page is setup. The following changes to the gulpfile will add watchify to the gulp workflow and improve efficiency.

Install watchify and lodash.assign

# dependencies for watchify gulp js task

npm install watchify --save-dev
npm install lodash.assign --save-dev

This updated gulpfile includes watchify for persistent browserify bundling that watches files for changes and only rebuilds what it needs to. To avoid EADDRINUSE errors, the gulp webserver is being set to use port 3000.

'use strict';

var gulp        = require('gulp'),
    assign      = require('lodash.assign'),
    browserify  = require('browserify'),
    buffer      = require('vinyl-buffer'),
    gutil       = require('gulp-util'),
    source      = require('vinyl-source-stream'),
    sourcemaps  = require('gulp-sourcemaps'),
    uglify      = require('gulp-uglify'),
    watchify    = require('watchify'),
    webserver   = require('gulp-webserver');

// custom browserify options
var customOpts = {
    entries: ['./src/js/index.js'],
    debug: true
var opts = assign({}, watchify.args, customOpts);
var b = watchify(browserify(opts));

gulp.task('js', bundle); // run `gulp js` to build the file
b.on('update', bundle); // on any dep update, runs the bundler
b.on('log', gutil.log); // output build logs to terminal

function bundle() {
  return b.bundle()
    // log errors if they happen
    .on('error', gutil.log.bind(gutil, 'Browserify Error'))
    // optional, remove if you don't need to buffer file contents
    // optional, remove if you dont want sourcemaps
    .pipe(sourcemaps.init({loadMaps: true})) // loads map from browserify file
    // Add transformation tasks to the pipeline here.
    .pipe(uglify()) // minify
    .pipe(sourcemaps.write('./')) // writes .map file

// static web server w/ livereload
gulp.task('server', function() {
            port: 3000,
            directoryListing: false,
            open: true

gulp.task('default', ['js', 'server']);
Source Code


Published by

Jim Frenette

Web Developer - views here are my own except those taken from people more clever than me.