Install
npm install @thewebformula/lithe
Routing
@thewebformula/lithe uses directory based routing. All routes go in a 'routes' folder.
app/
└── routes/
├── index/
│ └── index.js # /
├── 404/
│ └── index.js # /404 (or any url that is not found)
├── one/
│ └── index.js # one/
├── two[id?]/
│ └── index.js # two/:id?
├── three/
│ └── [id]/
│ └── index.js # three/:id
└── four/
└── [...all]/
└── index.js # four/* (four/a/b/)
app/routes/index/index.js → /
app/routes/one/index.js → one
app/routes/two[id?]/index.js → two/:id?
app/routes/three/[id]/index.js → three/:id
app/routes/four/[...rest]/index.js →
four/*
Directory route details
routes/index/index.js Root page (/)
routes/404/index.js Not found page. Auto redirect on non
matching routes
index.js Route component file
[id] Directory that represents a url parameter
[id?] Directory that represents an options url parameter
name[id?] Inline url parameter to avoid sub folder
[...rest] Directory that represents catch-all route
[...rest?] Directory that represents optional catch-all
route
index.html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="Cache-Control" content="no-store" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title></title>
<!-- app.js and app.css will automatically be updated to match bundle outputs -->
<link href="app.css" rel="stylesheet">
<script src="app.js" type="module"></script>
</head>
<body>
<!-- page template render into this element -->
<page-content></page-content>
<!-- Alternative using id attribute -->
<div id="page-content"></div>
</body>
</html>
Main application file
app.js
Required: Automatically uses app.js as entry file for bundling
/* Main app file
* you can import any code in here
*/
import someModule from './someModule.js';
// routes are automatically loaded
Prevent navigation allows you to lock down the app for uses like authentication
import { preventNavigation } from '@thewebformula/lithe';
// if not authenticated redirect to login and prevent navigation
if (!document.cookie.includes('authenticated=true')) {
if (location.pathname !== '/login') location.href = '/login';
preventNavigation(true);
}
Main application Styles
app.css
Optional: Will bundle and minify into a single file
@import url('./other.css');
body {
background-color: white;
}
Page
page.js and page.html
import { Component, Signal, html } from '@thewebformula/lithe';
import htmlTemplate from './page.html'; // automatically bundles
export default class extends Component {
// html page title
static title = 'Page';
/**
* Pass in HTML string. Use for imported .HTML
* Supports template literals: <div>${this.var}</div>
* @type {String}
*/
static htmlTemplate = htmlTemplate;
someVar = new Signal('Some var');
clickIt_bound = this.clickIt.bind(this);
constructor() {
super();
}
connectedCallback() {
console.log(this.urlParameters); // { id: 'value' }
console.log(this.searchParameters); // { id: 'value' }
}
disconnectedCallback() { }
// not called on initial render
beforeRender() { }
afterEnder() {
this.querySelector('#event-listener-button')
.addEventListener('click', this.clickIt_bound);
}
clickIt() {
console.log('clicked it!');
}
changeValue() {
this.someVar.value = 'Value updated';
}
/**
* Alternative method for html templates, instead of importing html file
*/
template() {
return html`
<div>Page Content</div>
<div>${this.someVar}</div>
${
// nested html
this.show ? html`<div>Showing</div>` : ''
}
<!--
You can comment out expressions
text
-->
<!-- "page" will reference the current page class -->
<button onclick="page.clickIt()">Click Method</button>
<button id="event-listener-button">Event listener</button>
<button onclick="page.changeValue()">Change value</button>
`;
}
}
Build app
build.js
No need for webpack or other bundlers. ESbuild is packed in and pre configured.
Build config
import build from '@thewebformula/lithe/build';
/**
* runs dev server by default on port 3000 with livereload
* basedir defaults to 'app/'
*/
build({ basedir: 'app/' });
Run commands
# Development run
node build.js
# Development run with watch to enable livereload
node --watch-path=./app build.js
# Production run. minifies and gzips
NODE_ENV=production node build.js