Gulpfile with jade support for Ionic@2.0.0

gulpfile.js

var gulp        = require('gulp'),
    gulpWatch   = require('gulp-watch'),
    del         = require('del'),
    runSequence = require('run-sequence'),
    gulpJade   = require('gulp-jade'),
    jade        = require('jade'),
    argv        = process.argv;


/**
 * Ionic hooks
 * Add ':before' or ':after' to any Ionic project command name to run the specified
 * tasks before or after the command.
 */
gulp.task('serve:before', ['watch']);
gulp.task('emulate:before', ['build']);
gulp.task('deploy:before', ['build']);
gulp.task('build:before', ['build']);

// we want to 'watch' when livereloading
var shouldWatch = argv.indexOf('-l') > -1 || argv.indexOf('--livereload') > -1;
gulp.task('run:before', [shouldWatch ? 'watch' : 'build']);

/**
 * Ionic Gulp tasks, for more information on each see
 * https://github.com/driftyco/ionic-gulp-tasks
 *
 * Using these will allow you to stay up to date if the default Ionic 2 build
 * changes, but you are of course welcome (and encouraged) to customize your
 * build however you see fit.
 */
var buildBrowserify = require('ionic-gulp-browserify-typescript');
var buildSass       = require('ionic-gulp-sass-build');
var buildHtml       = require('ionic-gulp-html-copy');
var copyFonts       = require('ionic-gulp-fonts-copy');
var copyScripts     = require('ionic-gulp-scripts-copy');
var tslint          = require('ionic-gulp-tslint');

var isRelease = argv.indexOf('--release') > -1;

var sequenceToRun = ['sass', 'html', 'jade', 'fonts', 'scripts'];

gulp.task('watch', ['clean'], function(done){
  runSequence(
    sequenceToRun,
    function(){
      gulpWatch('app/**/*.scss', function(){ gulp.start('sass'); });
      gulpWatch('app/**/*.html', function(){ gulp.start('html'); });
      gulpWatch('app/**/*.jade', function(){ gulp.start('jade'); });
      buildBrowserify({ watch: true }).on('end', done);
    }
  );
});

gulp.task('build', ['clean'], function(done){
  runSequence(
    sequenceToRun,
    function(){
      buildBrowserify({
        minify: isRelease,
        browserifyOptions: {
          debug: !isRelease
        },
        uglifyOptions: {
          mangle: false
        }
      }).on('end', done);
    }
  );
});

gulp.task('sass', buildSass);
gulp.task('html', buildHtml);
gulp.task('fonts', copyFonts);
gulp.task('scripts', copyScripts);
gulp.task('clean', function(){
  return del('www/build');
});
gulp.task('lint', tslint);

// Jade Support Task 
var jadeConfig = {
  path: 'app/**/*.jade',
  dest: 'www/build',
  onError: function(err) {
    console.error(err.message);
    this.emit('end');
  }
}

gulp.task('jade', function () {
  return gulp.src(jadeConfig.path)
    .on('error', jadeConfig.onError)
    .pipe(gulpJade({
      jade: jade,
      pretty: true
    }))
    .pipe(gulp.dest('www/build'));
});

npm install --save-dev gulp-jade jade