Add Typescript Webpack loading to a react-app-rewired config.
/* config-overrides.js */
const rewireTypescript = require('react-app-rewire-typescript');
module.exports = function override(config, env) {
// ...
config = rewireTypescript(config, env);
// ...
return config;
}For running .ts test files, take a look at ts-jest. PRs to integrate ts-jest compatibility into this repo are welcome.