[[oktatas:web:nodejs:gulp|< Gulp]]

====== Gulp - Szerver indítása ======

  * **Szerző:** Sallai András
  * Copyright (c) 2022, Sallai András
  * Licenc: [[https://creativecommons.org/licenses/by-sa/4.0/|CC BY-SA 4.0]]
  * Web: https://szit.hu

===== Szerver feladat =====

A child_process használatához nem kell telepíteni semmit.

<code javascript>
...
const exec = require('child_process').exec;

...
function server() {
    exec('npm start', function (err, stdout, stderr) {
        console.log(stdout);
        console.log(stderr);
        cb(err);
    });
}
...

exports.server = server;
</code>

===== Teljes gulpfile.js =====

<code javascript gulpfile.js>
const { src, dest, series } = require('gulp');
const exec = require('child_process').exec;
const cleanCss = require('gulp-clean-css');
const rename = require('gulp-rename');
const uglify = require('gulp-uglify');

function createHTML(cb) {
    src(['src/*.html'])
    .pipe(dest('public'));
    cb();
}

function createCSS(cb) {
    src(['src/css/*.css'])
    .pipe(cleanCss())
    .pipe(rename({extname: ".min.css"}))
    .pipe(dest('public/css'));
    cb();
}

function createJS(cb) {
    src(['src/js/*.js'])
    .pipe(uglify())
    .pipe(rename({extname: ".min.js"}))
    .pipe(dest('public/js'));
    cb();
}

function server() {
    exec('npm start', function (err, stdout, stderr) {
        console.log(stdout);
        console.log(stderr);
        cb(err);
    });
}

exports.html = createHTML;
exports.css = createCSS;
exports.js = createJS;
exports.server = server;
exports.default = series(createHTML, createCSS, createJS, server);

</code>

===== A lite-server beállítása =====

<code javascript bs-config.json>
{
    "server": ["src"],
    "port": 8000
}
</code>

<code javascript package.json>
{
...
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "lite-server"
  },
... 
}
</code>