babel-preset-test-bundled-dependencies/node_modules/core-js/modules/_same-value.js

Allow custom config for create-react-app without ejecting

// 7.2.9 SameValue(x, y)
module.exports = Object.is || function is(x, y){
  return x === y ? x !== 0 || 1 / x === 1 / y : x != x && y != y;
};