* **babel-preset-app:** support specifying core-js version ([#5411](https://github.com/nuxt/nuxt.js/issues/5411)) ([159123f](https://github.com/nuxt/nuxt.js/commit/159123f))
* **ts:** switch from babel preset to ts-loader ([#4563](https://github.com/nuxt/nuxt.js/issues/4563)) ([75e3df6](https://github.com/nuxt/nuxt.js/commit/75e3df6))
### Features
* **builder:** optional typescript support ([#4557](https://github.com/nuxt/nuxt.js/issues/4557)) ([7145c1a](https://github.com/nuxt/nuxt.js/commit/7145c1a))
* replace babel-plugin-transform-vue-jsx with [@vue](https://github.com/vue)/babel-preset-jsx ([#4740](https://github.com/nuxt/nuxt.js/issues/4740)) ([da8a3d8](https://github.com/nuxt/nuxt.js/commit/da8a3d8))