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', [], () =>
  gulp
    .src(['./src/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 ./src/hterm_all.js',
    ],
    {
      verbose: true,
    },
  ),
);

gulp.task('default', ['compress']);
gulp.task('upgrade', ['hterm'], () => del(['./libapps']));