typescript peer dependency warning #137
Description
The ts-node dependency requires a peer dependency of typescript >= 2.0 but it is not listed in this project's package.json.
Technically peer dependencies should be listed at every step of the dependency chain (see vuejs/vue-cli#1190 (comment)).
Considering ts-node is only needed for typescript server support, it can be listed as an optional peer dependency (implemented in yarn, and pnpm also showed interest)