gulpfile.js

var gulp = require("gulp");
var del = require("del");
var template = require("gulp-template");
var minifyCss = require("gulp-minify-css");
var rename = require("gulp-rename");
var uglify = require("gulp-uglify");
var jshint = require("gulp-jshint");
var mochaPhantomJS = require("gulp-mocha-phantomjs");
var pkg = require("./package.json");

gulp.task("clean", function() {
  return del(["dist/*"]);
});

gulp.task(
  "build-css",
  gulp.series([
    "clean",
    function() {
      return gulp
        .src("bootstrap-toc.css")
        .pipe(template(pkg))
        .pipe(gulp.dest("dist"))
        .pipe(minifyCss({ compatibility: "ie8" }))
        .pipe(
          rename({
            extname: ".min.css"
          })
        )
        .pipe(gulp.dest("dist"));
    }
  ])
);

gulp.task(
  "build-js",
  gulp.series([
    "clean",
    function() {
      return gulp
        .src("bootstrap-toc.js")
        .pipe(template(pkg))
        .pipe(gulp.dest("dist"))
        .pipe(
          uglify({
            output: {
              comments: /^!/
            }
          })
        )
        .pipe(
          rename({
            extname: ".min.js"
          })
        )
        .pipe(gulp.dest("dist"));
    }
  ])
);

gulp.task("js-lint", function() {
  return gulp
    .src("bootstrap-toc.js")
    .pipe(jshint())
    .pipe(jshint.reporter("default"))
    .pipe(jshint.reporter("fail"));
});

gulp.task("test", function() {
  return gulp.src("test/index.html").pipe(mochaPhantomJS());
});

gulp.task("watch", function() {
  gulp.watch("bootstrap-toc.js", ["js-lint", "test"]);
  gulp.watch("test/*", ["test"]);
});

gulp.task("build", gulp.parallel(["build-css", "build-js"]));

gulp.task("default", gulp.parallel(["build", "js-lint", "test"]));