Omi - Web Components Framework

- 📶 **Signal**-driven reactive programming by [reactive-signal](https://github.com/Tencent/omi/tree/master/packages/reactive-signal) - 💗 [100+ OMI Templates](https://omi.cdn-go.cn/templates/latest/) & [OMI Templates Source Code](https://github.com/Tencent/omi/tree/master/packages/omi-templates) - 🐲 [OMI Form](https://omi.cdn-go.cn/form/latest/docs/) & [OMI Form Playground](https://omi.cdn-go.cn/form/latest/play/) & [Lucide Omi Icons](https://github.com/omijs/lucide-omi) - ⚡ **Tiny** size, **Fast** performance - 🌐 Everything you need: **Web Components**, **JSX**, Function Components, Router, Suspense, Directive, Tailwindcss... - 💯 Both **object** oriented programming(OOP) and **data** oriented programming(DOP) are supported - 💒 Harness **Constructable Stylesheets** to easily manage and share styles ```tsx import { render, signal, tag, Component, h } from 'omi' const count = signal(0) function add() { count.value++ } function sub() { count.value-- } @tag('counter-demo') export class CounterDemo extends Component { static css = 'span { color: red; }' render() { return ( <> {count.value} ) } } ``` Use this component: ```tsx import { h } from 'omi' import './counter-demo' render(, document.body) // or import { CounterDemo, Other } from './counter-demo' // Prevent tree Shaking when importing other things render(, document.body) // or document.body.appendChild(document.createElement('counter-demo')) ``` ## Install ```bash npm i omi ``` To quickly create an Omi + Vite + TS/JS project: ```bash $ npx omi-cli init my-app # or create js project by: npx omi-cli init-js my-app $ cd my-app $ npm start # develop $ npm run build # release ``` To quickly create an Omi + **Router** + **Signal** + **Suspense** + **Tailwindcss** + Vite + TS project: ```bash $ npx omi-cli init-spa my-app $ cd my-app $ npm start # develop $ npm run build # release ``` ### Packages - Core packages - [`omi`](https://github.com/Tencent/omi/tree/master/packages/omi) - Implementation of omi framework. - [`omi-form`](https://github.com/Tencent/omi/tree/master/packages/omi-form) - Powerful, simple and cross frameworks form solution. - [`lucide-omi`](https://github.com/omijs/lucide-omi) - Lucide icon collection for omi. - [`omiu`](https://github.com/Tencent/omi/tree/master/packages/omiu) - Hope to create the best web components. For example, the powerful [vchart](https://visactor.io/vchart) and [vtable](https://visactor.io/vtable) - [`omi-router`](https://github.com/Tencent/omi/tree/master/packages/omi-router) - Create SPA of omi framework. - [`omi-cli`](https://github.com/omijs/cli) - To quickly create an Omi + Vite + TS/JS project. - Starter kits (not published to npm) - [`omi-elements`](https://github.com/Tencent/omi/tree/master/packages/omi-elements) - Tailwind Element Omi UI KIT. - [`omi-starter-spa`](https://github.com/Tencent/omi/tree/master/packages/omi-starter-spa) - A starter repo for building single page app using Omi + OmiRouter + Tailwindcss + TypeScript + Vite + Prettier. - [`omi-starter-ts`](https://github.com/Tencent/omi/tree/master/packages/omi-starter-ts) - A starter repo for building web app or reusable components using Omi in TypeScript base on Vite. - [`omi-starter-tailwind`](https://github.com/Tencent/omi/tree/master/packages/omi-starter-tailwind) - A starter repo for building web app or reusable components using Omi + Tailwindcss + TypeScript + Vite. - [`omi-starter-js`](https://github.com/Tencent/omi/tree/master/packages/omi-starter-js) - A starter repo for building web app or reusable components using Omi in JavaScript base on Vite. - [`omi-vue`](https://github.com/Tencent/omi/tree/master/packages/omi-vue) - Vue SFC + Vite + OMI + OMI-WeUI. - Components - [`omi-weui`](https://github.com/Tencent/omi/tree/master/packages/omi-weui) - WeUI Components of omi. - [`omi-auto-animate`](https://github.com/Tencent/omi/tree/master/packages/omi-auto-animate) - Omi version of @formkit/auto-animate. - [`omi-suspense`](https://github.com/Tencent/omi/tree/master/packages/omi-suspense) - Handling asynchronous dependencies. - Directives - [`omi-transition`](https://github.com/Tencent/omi/tree/master/packages/omi-transition) - Applying animations when an component is entering and leaving the DOM. - [`omi-ripple`](https://github.com/Tencent/omi/tree/master/packages/omi-ripple) - A lightweight component for adding ripple effects to user interface elements. - Examples (not published to npm) - [`snake-game-2tier`](https://github.com/Tencent/omi/tree/master/packages/snake-game-2tier) - SNake Game with `Signal` class - [`snake-game-3tier`](https://github.com/Tencent/omi/tree/master/packages/snake-game-3tier) - SNake Game with reactivity functions - [`omi-tutorial`](https://github.com/omijs/tutorial) - Source code of omi tutorial. **If you want to help the project grow, start by simply sharing it with your peers!** - [Share via Dev.to]() - [Share via Twitter](https://twitter.com/intent/tweet?text=Web%20Components%20Framework%20%F0%9F%8E%89http%3A%2F%2Fomijs.org%2F%0A%0A%20Everything%20you%20need%3A%20Web%20Components%2C%20JSX%2C%20Router%2C%20Suspense%2C%20Directive%2C%20Tailwindcss...%20%0A%0A%20Tailwind%20Element%20Omi%20UI%20KIT%3E%20%F0%9F%92%AFhttps%3A%2F%2Fomi.cdn-go.cn%2Felements%2Flatest%2F) - [Share via Facebook](https://www.facebook.com/sharer/sharer.php?u=http%3A//omijs.org) - [Share via LinkedIn](http://www.linkedin.com/shareArticle?url=http%3A%2F%2Fomijs.org%2F) - [Share via Pinterest](https://www.pinterest.com/pin/create/button?url=http://omijs.org/&media=https://repository-images.githubusercontent.com/36606437/66abfcfb-096b-4c9d-a290-77165213e605&description=Omi-Web%20Componnets%20Framework) - [Share via Reddit](https://reddit.com/submit?url=http://omijs.org/&title=web%20components%20framework) - [Share via StumbleUpon](https://www.stumbleupon.com/submit?url=http://omijs.org/&title=web%20components%20framework) - [Share via Vkontakte](https://vk.com/share.php?url=http://omijs.org/) - [Share via Weibo](https://service.weibo.com/share/share.php?url=https://omijs.org/&title=web%20components%20framework) - [Share via Hackernews](https://news.ycombinator.com/submitlink?u=http://omijs.org/&t=web%20components%20framework) Thank you! ## Usage ### TodoApp with reactivity functions > Data oriented programming In data-oriented programming, the focus is on the data itself and the operations on the data, rather than the objects or data structures that hold the data. This programming paradigm emphasizes the change and flow of data, and how to respond to these changes. The TodoApp with reactivity functions is a good example of this, using the concepts of reactive programming, where the UI automatically updates to reflect changes in the data (i.e., the to-do list). ```tsx import { render, signal, computed, tag, Component, h } from 'omi' const todos = signal([ { text: 'Learn OMI', completed: true }, { text: 'Learn Web Components', completed: false }, { text: 'Learn JSX', completed: false }, { text: 'Learn Signal', completed: false } ]) const completedCount = computed(() => { return todos.value.filter(todo => todo.completed).length }) const newItem = signal('') function addTodo() { // api a todos.value.push({ text: newItem.value, completed: false }) todos.update() // Trigger UI auto update // api b, same as api a // todos.value = [...todos.value, { text: newItem.value, completed: false }] newItem.value = '' // Changing the value type can automatically update the UI } function removeTodo(index: number) { todos.value.splice(index, 1) todos.update() // Trigger UI auto update } @tag('todo-list') class TodoList extends Component { onInput = (event: Event) => { const target = event.target as HTMLInputElement newItem.value = target.value } render() { return ( <>

{ todo.completed = !todo.completed todos.update() // Trigger UI auto update }} /> {todo.completed ? ~~{todo.text}~~ : todo.text} {' '}

Completed count: {completedCount.value}

) } } render(, document.body) ``` ### TodoApp with Signal Class > Object oriented programming In object-oriented programming, the focus is on the objects, which contain both data and methods to operate on the data. This programming paradigm emphasizes the interaction and cooperation between objects, and how to organize and manage code through object encapsulation, inheritance, and polymorphism. The TodoApp with reactivity functions can also be implemented in an object-oriented way, for example, by creating a TodoList class that contains the data of the to-do list and methods to operate on this data, as well as a `update` method to update the UI. ```tsx import { render, Signal, tag, Component, h, computed } from 'omi' type Todo = { text: string, completed: boolean } class TodoApp extends Signal<{ todos: Todo[], filter: string, newItem: string }> { completedCount: ReturnType constructor(todos: Todo[] = []) { super({ todos, filter: 'all', newItem: '' }) this.completedCount = computed(() => this.value.todos.filter(todo => todo.completed).length) } addTodo = () => { // api a this.value.todos.push({ text: this.value.newItem, completed: false }) this.value.newItem = '' this.update() // api b, same as api a // this.update((value) => { // value.todos.push({ text: value.newItem, completed: false }) // value.newItem = '' // }) } toggleTodo = (index: number) => { const todo = this.value.todos[index] todo.completed = !todo.completed this.update() } removeTodo = (index: number) => { this.value.todos.splice(index, 1) this.update() } } const todoApp = new TodoApp([ { text: 'Learn OMI', completed: true }, { text: 'Learn Web Components', completed: false }, { text: 'Learn JSX', completed: false }, { text: 'Learn Signal', completed: false } ]) @tag('todo-list') class TodoList extends Component { onInput = (event: Event) => { const target = event.target as HTMLInputElement todoApp.value.newItem = target.value } render() { const { todos } = todoApp.value const { completedCount, toggleTodo, addTodo, removeTodo } = todoApp return ( <>

toggleTodo(index)} /> {todo.completed ? ~~{todo.text}~~ : todo.text} {' '}

Completed count: {completedCount.value}

) } } render(, document.body) ``` We won't discuss which method is good or bad here. You can choose either method using omi. ## Auto Import h vite.config.js: ```tsx import { defineConfig } from 'vite' export default defineConfig({ esbuild: { jsxInject: "import { h } from 'omi'", jsxFactory: "h", jsxFragment: "h.f" } }) ``` You can inject code during construction, so you don't have to manually export `h`. ## Define Cross Framework Component The case of using Omi component in Vue is as follows: ![](./assets/omi-vue.gif) my-counter.tsx: ```tsx import { tag, Component, h, bind } from 'omi' @tag('my-counter') class MyCounter extends Component { static props = { count: { type: Number, default: 0, changed(newValue, oldValue) { this.state.count = newValue this.update() } } } state = { count: null } install() { this.state.count = this.props.count } @bind sub() { this.state.count-- this.update() this.fire('change', this.state.count) } @bind add() { this.state.count++ this.update() this.fire('change', this.state.count) } render() { return ( <> {this.state.count} ) } } ``` ### Using in Vue3 ```vue ``` If you `fire` the `count-change` in an Omi component: ```ts this.fire('count-change', this.state.count) ``` To use the component and listen for events in Vue: ```html ``` ### Using in React ```tsx import { useState, useRef, useEffect } from 'react' import useEventListener from '@use-it/event-listener' import './my-counter' function App() { const [count, setCount] = useState(100) const myCounterRef = useRef(null) useEffect(() => { const counter = myCounterRef.current if (counter) { const handleChange = (evt) => { setCount(evt.detail) } counter.addEventListener('change', handleChange) return () => { counter.removeEventListener('change', handleChange) } } }, []) return ( <>

Omi + React

) } export default App ``` ## Contributors

## License MIT © Tencent

	Stars	Issues	Version	Updated	Created
@mpxjs/core	3,536	30	2.9.32	a day ago	5 years ago
@tarojs/taro	34,821	1,164	3.6.29	5 days ago	6 years ago
chameleon-runtime			1.0.1	4 years ago	5 years ago
mpvue	20,421	467	1.4.6	5 years ago	7 years ago
omi	12,928	59	7.6.7	a month ago	7 years ago
wepy			1.7.2	6 years ago	8 years ago

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