Lotek is a Script (Joiner / Combiner / Minifier) for HTML, CSS and JavaScript. Pretty helpfull for building asset bundle script into One Small File.
Lotek is not WebPack. But it has some similiarity.
While WebPack is for Modular Project.
Lotek is a script combiner for Basic JS (Think like jQuery, Bootstrap, etc...).
in example if you have this code in your HTML files :
<html>
<body>
<!-- ..... -->
<!-- Because i use jquery a lot,
even if I use modern framework like Svelte, Vue, etc..
I still need to include jQuery (Because it has so many library :D ) -->
<script src="./jquery.min.js"></script>
<script src="./bootstrap.min.js"></script>
<script src="https://somecdn.com/somejquerylibrary.min.js"></script>
<script src="./yourlibscript.js"></script>
<script src="./anotherscript.js"></script>
<script src="./anotherscript2.js"></script>
<script src="./yourwebpackscript.min.js"></script>
<!-- ..... -->
</body>
</html>In my case, that code is affecting page speed load performance because browser will try to download all those script.
Lotek will combine them into 1 script file and make page load much faster and efficient. And also it will make code more simple like this :
<html>
<body>
<!-- ..... -->
<script src="./lotek.bundle.min.js"></script>
<script src="./yourwebpackscript.min.js"></script>
<!-- ..... -->
</body>
</html>Just give it a try, and you'll love it so much.
Crafted with ❤️ by Herlangga Sefani (a.k.a Gaibz)
> npm install lotek --save-dev
In joiner.js file
const Lotek = require("lotek");
const config = {
groups : [
{
// specify group name, for identifier
name : "Production",
// if true, then it will print out file location information inside output file
debug_mode : true,
// configuration for JS File
js : {
files : [
"https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js",
"./assets/src/js/script1.js",
"./assets/src/js/script2.js"
],
output : "./assets/dist/bundle.assets.production.min.js",
// if true then content of file will be inside a javascript closure function. ()()
use_closure_per_file : false,
// if true then content of all file will be inside javascript closure function
use_closure_all : false,
// compress output into minified version
minify : true,
// @see : <https://www.npmjs.com/package/terser#compress-options>
minify_options : {}
},
// Configuration for CSS Files
css : {
files : [
"https://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap-glyphicons.css",
"https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/5.1.1/css/fileinput.min.css",
"./assets/src/css/style1.css",
"./assets/src/css/style2.css"
],
output : "./assets/dist/bundle.assets.production.min.css",
// For Css This is important, as inside of css files may contain url() linked to another directory
url_replaces : [
{
find : "assets/",
replacement : "../"
},
// ... more
],
// Replace Log Output Filepath
replace_log_output : "./replacer_log.txt",
// compress output into minified version
minify : true,
// @see https://github.com/jakubpawlowicz/clean-css#constructor-options
minify_options: {
// format: 'beautify'
}
},
// Configuration for HTML File
html : {
files : [
"./dev.html"
],
output : "./index.html",
// you may want to change some code inside html for joining
replaces : [
{
find : `<link href="./assets/src/css/style1.css" rel="stylesheet" />`,
replacement : `<link href='./assets/dist/bundle.assets.production.min.css' rel='stylesheet' />`,
},
{
find : `<link href="./assets/src/css/style2.css" rel="stylesheet" />`,
replacement : "",
},
{
find : `<script src="./assets/src/js/script1.js"></script>`,
replacement : `<script src="./assets/dist/bundle.assets.production.min.js"></script>`,
},
{
find : `<script src="./assets/src/js/script2.js"></script>`,
replacement : "",
},
// ... more
],
// minify html using html-minifier
minify : true,
// @see https://www.npmjs.com/package/html-minifier#options-quick-reference
minify_options : {
removeAttributeQuotes: true,
removeComments : true,
collapseWhitespace : true,
minifyJS : true,
minifyCSS : true,
}
}
}
]
}
new Lotek(config).compile().then(() => {
console.log("Done.");
}); Then Simply run in command line
> node joiner.js
groups[] [Array]
Groups is an array of multiple config to be bundled.
groups[].name [String]
Specify Group name for identifier, example : Production, Development, or anything you want.
groups[].debug_mode [Boolean]
If set to true, then it will print out file source location inside output file on top of code.
ex : /*! File : somedir/somefile.ext */
groups[].js [Object]
Object of javascript bundle configuration
groups[].js.files [Array]
Array of files to be bundled, you can put url from http / https
groups[].js.output [String]
Output file of combined and minified javascript code
groups[].js.use_closure_per_file [Boolean]
if true then it will make closure per file code, see example output
/*! Code of original file1.js */
console.log("File 1");
/*! Code of original file2.js */
console.log("File 1");
/*! Code of output with closure per file set to true */
(() => {
console.log("File 1");
})();
(() => {
console.log("File 2");
})();groups[].js.use_closure_all [Boolean]
if true then it will make closure per file code, see example output
/*! Code of original file1.js */
console.log("File 1");
/*! Code of original file2.js */
console.log("File 1");
/*! Code of output with closure all set to true */
(() => {
console.log("File 1");
console.log("File 2");
})();groups[].js.minify [Boolean]
if true then it will minify the output of all code (Powered by Terser),
see example output
/*! Code of original file1.js */
console.log("File 1");
/*! Code of original file2.js */
console.log("File 1");
/*! Code of output with minify to true */
console.log("File 1");console.log("File 2");groups[].js.minify_options [Object]
Since I used Terser for minify, please visit Terser Options for better explanation
groups[].css [Object]
Object of CSS (Cascading StyleSheet) bundle configuration
groups[].css.files [Array]
Array of files to be bundled, you can put url from http / https
groups[].css.output [String]
Output file of combined and minified css
groups[].css.url_replaces [Array of Object]
For CSS Sometimes you need to specify the path of assets inside CSS, this thing will act like url translator.
For example inside an @import url(...) or background:url(...)
With this configuration it will automatically detect your asset url and refactor into new url by specify find and replacement.
the Object should contain : find and replacement key.
If you have a css file like this (./assets/src/css/style.css) :
/*! Example of CSS */
body {
background:url('./images/someimage.png');
}and you set the config like this (./joiner.js):
/*! Config example */
css = {
files : [
"./assets/src/css/style.css"
],
output : "./assets/dist/bundle.css",
url_replaces : [
{
find : "assets/",
replacement : "../"
}
]
}And the output of CSS should be :
/*!
Without url_replace is set, which will give you wrong path
*/
body {
background:url('./assets/src/css/./images/someimage.png');
}
/*!
With url_replace is set will give you correct path
*/
body {
background:url('./../src/css/./images/someimage.png');
}
/*!
With url_replace is set and minified
*/
body {
background:url('../src/css/images/someimage.png');
}groups[].css.replace_log_output [String]
output file for saving replace log
groups[].css.minify [Boolean]
if true then it will minify the output of all code (Powered by Clean-CSS),
see example output
/*! Code of original style1.css */
body {
cursor: pointer;
background: url('./images/sample1.png');
}
/*! Code of original style2.css */
body {
border: 1px solid #ddd;
}
/*! Code of output with minify to true */
body{cursor:pointer;background:url(../src/css/images/sample1.png)}body{border:1px solid #ddd}groups[].css.minify_options [Object]
Since I used Clean-CSS for minify, please visit Clean CSS Options for better explanation
groups[].html [Object]
Object of HTML bundle configuration
groups[].html.files [Array]
Array of files to be bundled, you can put url from http / https
groups[].html.output [String]
Output file of combined and minified html
groups[].css.replaces [Array of Object]
Find and Replace content inside HTML. This is usefull if you want to automatically change source script for development and production.
Just see example (dev.html) :
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Some Title</title>
<link href="./assets/src/css/style1.css" rel="stylesheet" />
<link href="./assets/src/css/style2.css" rel="stylesheet" />
</head>
<body>
<script src="./assets/src/js/script1.js"></script>
<script src="./assets/src/js/script2.js"></script>
</body>
</html>and you set the config like this (./joiner.js):
/*! Config example */
html = {
files : [
"./dev.html"
],
output : "./index.html",
replaces : [
{
find : `<link href="./assets/src/css/style1.css" rel="stylesheet" />`,
replacement : `<link href='./assets/dist/bundle.assets.production.min.css' rel='stylesheet' />`,
},
{
find : `<link href="./assets/src/css/style2.css" rel="stylesheet" />`,
replacement : "",
},
{
find : `<script src="./assets/src/js/script1.js"></script>`,
replacement : `<script src="./assets/dist/bundle.assets.production.min.js"></script>`,
},
{
find : `<script src="./assets/src/js/script2.js"></script>`,
replacement : "",
},
]
}And the output of HTML should be :
<!-- File : ./dev.html -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Some Title</title>
<link href='./assets/dist/bundle.assets.production.min.css' rel='stylesheet' />
</head>
<body>
<script src="./assets/dist/bundle.assets.production.min.js"></script>
</body>
</html>groups[].html.minify [Boolean]
if true then it will minify the output of all code (Powered by html-minifier).
groups[].html.minify_options [Object]
Since I used html-minifier for minify, please visit HTML Minifier Options for better explanation
Thanks to all of these wonderfull people who make this project awesome.
 Herlangga Sefani 💻 |
 Mocchapine 💻 |