React polyfills for ie >= 9
问题 I'm trying to set up React App for IE 9+ browsers. Here is my current src. package.json { "name": "react-ts-template", "version": "0.1.0", "private": true, "dependencies": { "@testing-library/jest-dom": "^4.2.4", "@testing-library/react": "^9.3.2", "@testing-library/user-event": "^7.1.2", "@types/jest": "^24.0.0", "@types/node": "^12.0.0", "@types/react": "^16.9.0", "@types/react-dom": "^16.9.0", "@types/crypto-js": "3.1.44", "react": "^16.13.1", "react-dom": "^16.13.1", "react-scripts": "3.4