I  have nvm installed and recently fixed an issue with a conflict with a previously installed version of node.  Fixing it meant removing the node executable from the prior location.  Some things still work but I'm getting this error: 
Cannot find module 'typescript'
and this fix didn't help me: How to fix Cannot find module 'typescript' in Angular 4?
running ng new is what is triggering the error.
I have typescript installed globally. And to ensure that is installed with this version of node, I ran:
nvm use 10 && npm i -g typescript
/Users/username/.nvm/versions/node/v10.16.0/lib/node_modules/typescript/bin/tsserver
Thanks, Wayne
Hopefully this will help folks ...
You can use mv, to install Typescript; this seems good for me, but I don't go our of my way to use Typescript.
$ nvm  --version
$ nvm  use stable
$ npm  install typescript --save-dev
$ npx  tsc --version
Version 5.0.4
$ 
what seems to work is fine for me :-)
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