gulpfile.js

const gulp = require("gulp"),
  jade = require("gulp-jade"),
  sass = require("gulp-sass"),
  concat = require("gulp-concat"),
  watch = require("gulp-watch"),
  minify = require("gulp-minify"),
  pretty = require("gulp-pretty-html");
sass.compiler - require("node-sass");

gulp.task("jade", function() {
  return gulp
    .src("/website*.jade")
    .pipe(jade())
    .pipe(pretty())
    .pipe(gulp.dest("./website/dist/"));
});

gulp.task("sass", function() {
  return gulp
    .src("css/*.+(sass|scss)")
    .pipe(concat("style.sass"))
    .pipe(sass().on("error", sass.logError))
    .pipe(gulp.dest("./dist/css/"));
});

gulp.task("compress", function() {
  return gulp
    .src("website/js/*.js")
    .pipe(concat("index.js"))
    .pipe(minify())
    .pipe(gulp.dest("./website/dist/js/"));
});

gulp.task("default", ["jade", "sass", "compress"]);

gulp.task("watch", function() {
  return gulp.watch("./website/*.+(jade|sass|scss|js|html)", [
    "sass",
    "jade",
    "compress"
  ]);
});