edlp_d8/web/modules/custom/gulpfile.mjs

'use strict';

import gulp from 'gulp';
const { series, src, dest, watch } = gulp;
import gulpif from 'gulp-if';
import * as dartSass from 'sass';
import gulpSass from 'gulp-sass';
const sass = gulpSass(dartSass);
import autoprefixer from 'gulp-autoprefixer';
import stripDebug from 'gulp-strip-debug';
import jsmin from 'gulp-jsmin';
import cssmin from 'gulp-cssmin';
import rename from 'gulp-rename';
import minimist from 'minimist';

// var es = require('event-stream');

var modules = [
  {
    modname:'edlp_studio',
    srcjs:['./edlp_studio/assets/scripts/edlp_studio.js']
  }, 
  {
    modname:'edlp_search',
    srcjs:['./edlp_search/assets/scripts/edlp_search.js']
  },
  {
    modname:'edlp_corpus',
    srcjs:['./edlp_corpus/assets/scripts/corpus.js', './edlp_corpus/assets/scripts/physics.js'],
    srccss:['./edlp_corpus/assets/styles/corpus.scss']
  }]; 

// to get minified assets run `gulp --env=prod`
var argv = minimist(process.argv.slice(2));
console.dir(argv);
var prod = argv.env === 'prod' ? true : false;

function handleError(err) {
  console.log(err.toString());
}

function scripts() {
  return new Promise(function(resolve, reject) {
    modules.map(function(module) {
      // console.log('module', module);
      
      src(module.srcjs, {allowEmpty: true})
        .on('data', function(file) {
          console.log('File src:', file.path);
        })
        .pipe(gulpif(prod, stripDebug()))
        .pipe(gulpif(prod, jsmin()))
        .pipe(rename({suffix: '.min'}))
        .pipe(dest(`./${module.modname}/assets/dist/scripts/`));
        // .on('data', function(file) {
        //   console.log('File dest:', file.path);
        // });
    });
    resolve();
  });
  // return src(['./edlp_studio/assets/scripts/edlp_studio.js'])
  //       .pipe(gulpif(prod, stripDebug()))
  //       .pipe(gulpif(prod, jsmin()))
  //       .pipe(rename({suffix: '.min'}))
  //       .pipe(dest('./edlp_studio/assets/dist/scripts/'));
};

function styles() {
  return new Promise(function(resolve, reject) {
    modules.map(function(module) {
      if (module.srccss) {
        src(module.srccss, {allowEmpty: true})
          .pipe(sass().on('error', sass.logError))
          .pipe(autoprefixer({
              cascade: false
          })).on('error', handleError)
          .pipe(gulpif(prod, cssmin()))
          // .pipe(cssmin())
          .pipe(rename({suffix: '.min'}))
          .pipe(dest('./'+module.modname+'/assets/dist/styles/'));
      }
    });
    resolve();
  });
  // return src('./edlp_studio/assets/styles/*.scss')
  //       .pipe(sass().on('error', sass.logError))
  //       .pipe(autoprefixer({
  //           cascade: false
  //       })).on('error', handleError)
  //       .pipe(gulpif(prod, cssmin()))
  //       // .pipe(cssmin())
  //       .pipe(rename({suffix: '.min'}))
  //       .pipe(dest('./edlp_studio/assets/dist/styles/'));
};

// default gulp task
function devwatch () {
  // series(scripts, styles, done => {
    for (var i = 0; i < modules.length; i++) {
      watch('./'+modules[i].modname+'/assets/styles/*.scss', styles);
      watch('./'+modules[i].modname+'/assets/scripts/*.js', scripts);
    }
  //   done()
  // })
};


export default series(scripts, styles); //
export { devwatch }