sample react component

App.js

import React from 'react'

class App extends React.Component {
  // NOTE common fields
  static propTypes = {
  }

  static defaultProps = {
  }

  state = {
  }

  method() {
  }

  fieldA = 'I am a field'
  filedB = "I'm not related to the render process, so shouldn't belong to state"

  // NOTE common life cycles
  componentDidMount() {
  }

  componentWillUnmount() {
  }

  componentDidUpdate() {
  }

  render() {
  }

  // NOTE uncommon life cycles
  shouldComponentUpdate(nextProps, nextState) {
  }

  static getDerivedStateFromProps(nextProps, prevState) {
  }
}