setState with callback.js

onClick = e => {
  e.persist();
  const clickCounts = { ...this.state.clickCounts };
  let clickCount = +clickCounts[e.target.name] || 0;
  clickCounts[e.target.name] = ++clickCount;
  
  // - From this,
  // this.setState({ clickCounts });
  
  // + To this
  this.setState({ clickCounts }, () =>
    console.log(
      `Button Name (▶️️ inside callback) = `,
      this.state.clickCounts
    )
  );
  console.log(
    `Button Name (◀️ outside callback) = ${e.target.name}`,
    this.state.clickCounts
  );
};