wetty/gulpfile.js

const gulp = require('gulp');
const concat = require('gulp-concat');
const minify = require('gulp-minify');
const babel = require('gulp-babel');
const shell = require('gulp-shell');
const del = require('del');

gulp.task('compress', ['hterm'], () => gulp
  .src([
    './libapps/hterm_all.js',
    './src/wetty.js',
  ])
  .pipe(concat('wetty.js'))
  .pipe(babel())
  .pipe(
    minify({
      ext: {
        min: '.min.js',
      },
      exclude    : ['tasks'],
      noSource   : true,
      ignoreFiles: ['.combo.js', '*.min.js'],
    })
  )
  .pipe(gulp.dest('./public/wetty')));

gulp.task('hterm',
  shell.task([
    'git clone https://chromium.googlesource.com/apps/libapps',
    'LIBDOT_SEARCH_PATH=$(pwd)/libapps ./libapps/libdot/bin/concat.sh -i ./libapps/hterm/concat/hterm_all.concat -o ./libapps/hterm_all.js',
  ], {
    verbose: true,
  }));

gulp.task('default', ['compress'], () => {
  return del(['./libapps']);
});