gulpfile.js

var gulp = require('gulp');
var concat = require('gulp-concat');
var uglify = require('gulp-uglify');
var connect = require('gulp-connect');
var watch = require('gulp-watch');
var colors = require('colors');

gulp.task('build', function() {
  gulp.src([
    './src/js/delegate-service.js',
    './src/js/pdf-viewer-delegate.js',
    './src/js/pdf-ctrl.js',
    './src/js/pdf-viewer-toolbar.js',
    './src/js/pdf-viewer.js'
  ])
    .pipe(concat('angular-pdf-viewer.min.js'))
    .pipe(uglify())
    .pipe(gulp.dest('./dist/'));
});

gulp.task('dev', function() {
  // Start a server
  connect.server({
    root: '',
    port: 3000,
    livereload: true
  });
  console.log('[CONNECT] Listening on port 3000'.yellow.inverse);

  // Watch HTML files for changes
  console.log('[CONNECT] Watching HTML, JS and CSS files for live-reload'.blue);
  watch({
    glob: ['./src/**/*.*']
  })
    .pipe(connect.reload());
});