didupdate-class.tsx

import React, { Component } from 'react'

interface State {
  name: string
}

class DidUpdate extends Component<{}, State> {
  state = {
    name: ''
  }

  componentDidMount() {
    console.log('Eu estou montado')
  }

  componentDidUpdate() {
    console.log('Sofri alteração')
  }

  handleChange = (e: React.ChangeEvent<HTMLInputElement>) =>
    this.setState({ name: e.target.value })

  render() {
    const { name } = this.state
    return (
      <>
        <input value={name} onChange={this.handleChange} />
      </>
    )
  }
}

export default DidUpdate