[BUG] [angular-typescript] Wrong Typescript Version for Angular 6 with Npm

Created by: karismann

Description

Unable to npm run build the sample typescript-angular-v6-provided-in-root\builds\with-npm because the typescript version is not correct :

Error: The Angular Compiler requires TypeScript >=2.7.2 and <2.10.0 but 2.6.2 was found instead.

openapi-generator version

4.0.0-SNAPSHOT

Related issues/PRs

https://github.com/angular/angular/blob/master/CHANGELOG.md#600-2018-05-03

Suggest a fix

tsVersion ">=2.1.5 <2.7.0" value should be replaced by ">=2.7.2 and <2.10.0"

I will send a PR