import {src, dest} from "vinyl-fs";
import {BabelTransformer} from "vinyl-tf-babel";

src("src/**/*.js")
  .pipe(new BabelTransformer())
  .pipe(dest("dist"));

import gulp from "gulp";
import {transform as babel} from "vinyl-tf-babel";

gulp.task("babel", () => {
  return gulp.src("src/**/*.js")
    .pipe(babel())
    .pipe(gulp.dest("dist"));
});

new BabelTransformer([options]);

transform([options]);