Gulp Inject - Single and Multiple

gulp-inject-single-mutiple

gulp.task('scripts_insert', ['vendor_scripts', 'site_scripts'], function () {

	var transform = function(filepath, file, i, length) {
		return '<script src="' + filepath + '" async></script>';
	};

	return gulp.src(paths.js.template)
	.pipe(inject(gulp.src(paths.js.dest.lib + '/*.js', {read: false}), {addRootSlash: false, transform: transform}))
	.pipe(gulp.dest(base_paths.templates));

});

/* used only if multiple scripts are necessary */
gulp.task('multiple_scripts_insert', ['vendor_scripts', 'site_scripts'], function () {

	var vendor_stream = gulp.src([paths.js.dest.vendor + '/*.js'], {read: false});

	var lib_stream = gulp.src([paths.js.dest.lib + '/*.js'], {read: false, transform: transform});
	
	return gulp.src(paths.js.template)
		.pipe(inject(series(vendor_stream, lib_stream),{addRootSlash: false})) // This will always inject vendor files before app files
		.pipe(gulp.dest(base_paths.templates));

});