packages/create-react-context/src/index.js
function objectIs(x, y) {
  if (x === y) {
    return x !== 0 || 1 / x === 1 / y;
  }
  return x !== x && y !== y;
}
function objectIs(x, y) {
  if (x === y) {
    return x !== 0 || 1 / x === 1 / y;
  }
  return x !== x && y !== y;
}
Inlined Object.is polyfill. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is