How to create a proxy using react create app

sample.js

//step 1: Inside package.json add proxy key

// eg: "proxy": "http://jsonplaceholder.typicode.com"

//step 2: sample program to retrive from jsonplaceholder

(async()=>{
  const apiData = await fetch('/users');
  const json = await apiData.json();
  console.log("JJJ:", json);
})()