gulpfile.js

const gulp = require("gulp"),
    csso = require("gulp-csso"),
    htmlmin = require("gulp-htmlmin"),
    jsonminify = require("gulp-jsonminify"),
    SRC = ".",
    DEST = "./dist";

gulp.task("styles", () => gulp
    .src(`${SRC}/css/*.css`)
    .pipe(csso())
    .pipe(gulp.dest(`${DEST}/css`)));

gulp.task("scripts", () => gulp.src([`${DEST}/js/*.js`, `${SRC}/js/editor.min.js`]).pipe(gulp.dest(`${DEST}/js`)));

gulp.task("html", () => gulp
    .src(`${SRC}/html/*.html`)
    .pipe(
        htmlmin({
            collapseWhiteSpace: true,
            removeComments: true,
        }),
    )
    .pipe(gulp.dest(`${DEST}/html`)));

gulp.task("manifest", () => gulp
    .src(`${SRC}/manifest.json`)
    .pipe(jsonminify())
    .pipe(gulp.dest(DEST)));

gulp.task("images", () => gulp.src(`${SRC}/imgs/*.*`).pipe(gulp.dest(`${DEST}/imgs`)));

gulp.task("default", gulp.series("styles", "scripts", "html", "manifest", "images"));