element-book v23.4.2

element-book

An element-vir drop-in element for building, testing, and demonstrating a collection of elements (or, in other words, a design system).

Installation

npm i element-book

Terminology

• Page: a group of pages and / or element examples. Pages can be infinitely nested.
• Element Example: an individual element example with independent state, styles, title, etc.

Usage

1. Define element-book pages with defineBookPage:

   import {defineBookPage} from '../data/book-entry/book-page/define-book-page.js';
   
   export const myPage = defineBookPage({
       /** Use `undefined` if your page is at the top level. */
       parent: undefined,
       title: 'My Page',
   });

2. Inside of a page definition, define an element example:

   import {html} from 'element-vir';
   import {defineBookPage} from '../data/book-entry/book-page/define-book-page.js';
   
   export const myPage = defineBookPage({
       /** Use `undefined` if your page is at the top level. */
       parent: undefined,
       title: 'My Page',
       defineExamples({defineExample}) {
           defineExample({
               title: 'My Example',
               render() {
                   return html`
                       <p>Render your element here.</p>
                   `;
               },
           });
       },
   });

3. Instantiate an instance of the element book app into your app and pass in all your pages:

   import {defineElementNoInputs, html} from 'element-vir';
   import {ElementBookApp} from '../ui/elements/element-book-app/element-book-app.element.js';
   import {myPage} from './define-page.example.js';
   
   export const MyApp = defineElementNoInputs({
       tagName: 'my-app',
       render() {
           return html`
               <${ElementBookApp.assign({
                   pages: [
                       myPage,
                   ],
               })}></${ElementBookApp}>
           `;
       },
   });

Why not Storybook?

Because Storybook is un-composable, impossible to debug, and full of behind-the-scenes *magic* that you can't backtrack without already understanding the inner workings of Storybook itself. With element-book, it's all just imports that you can directly follow with the TypeScript compiler.