gulpfile.js

process.env.NODE_ENV = 'production';

const gulp = require('gulp');
const plumber = require('gulp-plumber');
const gulpBabel = require('gulp-babel');
const babelConfig = require('./config/babel');
const defaultConfig = require('./config/config.defaults');

const dest = './publish';

const copy = () => {
  return gulp
    .src([
      './!(node_modules|publish)/**/*',
      './!(node_modules|publish)',
      './.!(git)*',
      './!*.js',
    ])
    .pipe(plumber())
    .pipe(gulp.dest(dest));
};

const babel = () => {
  return gulp
    .src([
      './!(node_modules|publish)/**/*.@(js|ts|jsx|tsx)',
      './*.@(js|ts|jsx|tsx)',
    ])
    .pipe(gulpBabel(babelConfig(true, defaultConfig)))
    .on('error', (error) => console.log(error))
    .pipe(plumber())
    .pipe(gulp.dest(dest));
};

const watch = () => {
  return gulp
    .watch(
      ['./!(node_modules|publish)**/*', './!(node_modules|publish)'],
      ['babel']
    )
    .on('change', function (event) {
      console.log(
        'File ' + event.path + ' was ' + event.type + ', running tasks...'
      );
    })
    .on('error', (error) => console.log(error));
};

exports.watch = watch;
exports.default = gulp.series(copy, babel);