gulpfile.js

var gulp = require('gulp'),
  runSequence = require('run-sequence'),
  newVer;

gulp.task('karma', function(done) {
  var karma = require('karma').server;
  karma.start({
    frameworks: ['jasmine'],
    files: [
      'bower_components/angular/angular.js',
      'bower_components/angular-mocks/angular-mocks.js',
      'bower_components/localforage/dist/localforage.js',
      'src/angular-localForage.js',
      'tests/*.js'
    ],
    singleRun: true,
    browsers: ['Firefox', 'Chrome']
  }, done);
});

gulp.task('build-files', function() {
  var rename = require('gulp-rename'),
    uglify = require('gulp-uglify'),
    header = require('gulp-header'),
    pkg = require('./package.json'),
    banner = ['/**',
      ' * <%= pkg.name %> - <%= pkg.description %>',
      ' * @version v<%= version %>',
      ' * @link <%= pkg.homepage %>',
      ' * @license <%= pkg.license %>',
      ' * @author <%= pkg.author %>',
      ' */',
      ''].join('\n');

  return gulp.src('src/angular-localForage.js')
    .pipe(header(banner, { pkg: pkg, version: newVer || pkg.version }))
    .pipe(gulp.dest('dist'))
    .pipe(uglify())
    .pipe(header(banner, { pkg: pkg, version: newVer || pkg.version }))
    .pipe(rename({suffix: '.min'}))
    .pipe(gulp.dest('dist'));
});

gulp.task('build', ['karma'], function(done) {
  runSequence('karma', 'build-files', done);
});

gulp.task('promptBump', function() {
  var prompt = require('gulp-prompt'),
    semver = require('semver'),
    pkg = require('./package.json');

  return gulp.src('')
    .pipe(prompt.prompt({
      type: 'list',
      name: 'bump',
      message: 'What type of version bump would you like to do ? (current version is ' + pkg.version + ')',
      choices: [
        'patch (' + pkg.version + ' --> ' + semver.inc(pkg.version, 'patch') + ')',
        'minor (' + pkg.version + ' --> ' + semver.inc(pkg.version, 'minor') + ')',
        'major (' + pkg.version + ' --> ' + semver.inc(pkg.version, 'major') + ')',
        'none (exit)'
      ]
    }, function(res) {
      if(res.bump.match(/^patch/)) {
        newVer = semver.inc(pkg.version, 'patch');
      } else if(res.bump.match(/^minor/)) {
        newVer = semver.inc(pkg.version, 'minor');
      } else if(res.bump.match(/^major/)) {
        newVer = semver.inc(pkg.version, 'major');
      }
    }));
});

gulp.task('changelog', function() {
  var streamqueue = require('streamqueue'),
    stream = streamqueue({objectMode: true}),
    exec = require('gulp-exec'),
    concat = require('gulp-concat'),
    clean = require('gulp-clean');

  stream.queue(gulp.src('').pipe(exec('node ./changelog.js ' + newVer, {pipeStdout: true})));
  stream.queue(gulp.src('CHANGELOG.md').pipe(clean()));

  return stream.done()
    .pipe(concat('CHANGELOG.md'))
    .pipe(gulp.dest('./'));
});

gulp.task('updatePackage', function() {
  var jeditor = require("gulp-json-editor");

  return gulp.src('package.json')
    .pipe(jeditor({
      'version': newVer
    }))
    .pipe(gulp.dest("./"))
});

gulp.task('updateBower', function() {
  var jeditor = require("gulp-json-editor");

  return gulp.src('bower.json')
    .pipe(jeditor({
      'version': newVer
    }))
    .pipe(gulp.dest("./"));
});

gulp.task('release', ['karma'], function(done) {
  runSequence('promptBump', 'updatePackage', 'updateBower', 'changelog', 'build-files', done);
});