More concise static props definitions for cross framework use🎉

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 (
      <>
        <button onClick={this.sub}>-</button>
        <span>{this.state.count}</span>
        <button onClick={this.add}>+</button>
      </>
    )
  }
}