client-components-PostForm1.tsx

handleSubmit = (ev: React.FormEvent) => {
  const { name, content } = this.state;
  ev.preventDefault();

  this.setState({
    isPosting: true,
    error: null,
  });

  api.submitPost(name, content)
    .then(res => {
      this.setState({
        isPosting: false,
        pendingPost: res.post,
        paymentRequest: res.paymentRequest,
      });
      this.checkIfPaid();
    }).catch(err => {
      this.setState({
        isPosting: false,
        error: err.message,
      })
    });
};