gulpfile.js

"use strict";

var gulp = require("gulp"),
    concat = require("gulp-concat"),
    uglifycss = require("gulp-uglifycss"),
    rename = require("gulp-rename"),
    flatten = require("gulp-flatten");

gulp.task("build-css", function() {
	return gulp.src([
        "src/app/components/common/common.css",
		    "src/app/components/**/*.css"
    ])
        .pipe(concat("primeng.css"))
        .pipe(gulp.dest("dist/resources"));
});

gulp.task("build-css-prod", function() {
    return gulp.src([
        "src/app/components/common/common.css",
        "src/app/components/badge/badge.css",
        "src/app/components/button/button.css",
        "src/app/components/checkbox/checkbox.css",
        "src/app/components/colorpicker/colorpicker-images.css",
        "src/app/components/inputtext/inputtext.css",
        "src/app/components/inputtextarea/inputtextarea.css",
        "src/app/components/password/password.css",
        "src/app/components/radiobutton/radiobutton.css",
        "src/app/components/ripple/ripple.css",
        "src/app/components/tooltip/tooltip.css"
    ])
    .pipe(concat("primeng.css"))
    .pipe(gulp.dest("dist/resources"))
    .pipe(uglifycss({"uglyComments": true}))
    .pipe(rename("primeng.min.css"))
    .pipe(gulp.dest("dist/resources"));
});

gulp.task("copy-component-css", function () {
    return gulp.src([
        "src/app/components/**/*.css",
        "src/app/components/**/images/*.png",
        "src/app/components/**/images/*.gif"
    ])
    .pipe(gulp.dest("dist/resources/components"));
});

gulp.task("images", function() {
    return gulp.src(["src/app/components/**/images/*.png", "src/app/components/**/images/*.gif"])
        .pipe(flatten())
        .pipe(gulp.dest("dist/resources/images"));
});

gulp.task("themes", function() {
    return gulp.src(["src/assets/components/themes/**/*",
        "!src/assets/components/themes/soho-*/**/*",
        "!src/assets/components/themes/viva-*/**/*",
        "!src/assets/components/themes/mira/**/*",
        "!src/assets/components/themes/nano/**/*"])
        .pipe(gulp.dest("dist/resources/themes"));
});

//Copy readme
gulp.task("readme", function() {
    return gulp.src(["README.md"])
    .pipe(gulp.dest("dist"));
});

//Building project with run sequence
gulp.task("build-assets", gulp.series("copy-component-css", "build-css-prod", "images", "themes", "readme"));