gulpfile.js

const gulp = require('gulp');
const $ = require('gulp-load-plugins')();
const pkg = require('./package.json');
const banners = require('./config/banners');
const jestConfig = require('./config/jest');
const jsdocConfig = require('./config/jsdoc');

// build
// --
gulp.task('clean', () => {
  return gulp
    .src(['coverage', 'dist', 'docs'], { allowEmpty: true, read: false })
    .pipe($.clean({ force: true }));
});

gulp.task('compile', () => {
  return gulp
    .src('./src/Core.js')
    .pipe(
      $.preprocess({
        context: { NODE_ENV: 'production' }
      })
    )
    .pipe($.rename(`${pkg.name}.js`))
    .pipe($.stripComments())
    .pipe($.babel())
    .pipe($.header(banners.max))
    .pipe(gulp.dest('./dist'));
});

gulp.task('uglify', () => {
  return gulp
    .src(`./dist/${pkg.name}.js`)
    .pipe($.uglify())
    .pipe($.header(banners.min))
    .pipe($.rename(`${pkg.name}.min.js`))
    .pipe(gulp.dest('./dist'));
});

gulp.task('build', gulp.series('clean', 'compile', 'uglify'));

// continuous build
// --
gulp.task(
  'watch',
  gulp.series('build', () => {
    gulp.watch(['./src/**/*.js', '!./src/**/*.test.js'], gulp.series('build'));
  })
);

// run unit tests (requires build/'dist' output)
// --
gulp.task('clean:coverage', () => {
  return gulp
    .src('./coverage', { allowEmpty: true, read: false })
    .pipe($.clean({ force: true }));
});

gulp.task(
  'test',
  gulp.series('clean:coverage', 'build', () => {
    return gulp.src('./dist/grindstone.min.js').pipe($.jest.default(jestConfig));
  })
);

// generate documentation
// --
gulp.task('clean:jsdoc', () => {
  return gulp
    .src('./docs', { allowEmpty: true, read: false })
    .pipe($.clean({ force: true }));
});

gulp.task(
  'jsdoc',
  gulp.series('clean:jsdoc', () => {
    return gulp
      .src(['./test/*.js', './config/*.js', './src/**/*.js'])
      .pipe($.jsdoc3(jsdocConfig));
  })
);