The Angular Compiler requires TypeScript >=3.6.4 and <3.9.0 but 3.5.3 was found instead.

Description

When generating an angular-typescript library the package.json is created with the devDependency
"typescript": ">=3.4.0 <3.6.0",
This means that angular 9 and above will not compile. I need to manually change the package.json to
"typescript": "3.8.3", for it to work.

Swagger-codegen version

swagger-codegen-cli-3.0.22.jar

Swagger declaration file content or url

Command line used for generation

java -Dmodels -DsupportingFiles
-jar swagger-codegen-cli-3.0.22.jar
generate -i https://localhost:44387/swagger/v1/swagger.json
-l typescript-angular
-o "src/models"
-Dio.swagger.parser.util.RemoteUrl.trustAll=true
-Dio.swagger.v3.parser.util.RemoteUrl.trustAll=true

Steps to reproduce

Have angular 9 or above installed.
Run swagger codegen and generate a typescript-angular library.
cd into the folder that contains the package.json file
Run npm install
Run npm run build

Related issues/PRs

Suggest a fix/enhancement

Start with the typescript-angular generator output and the package.json produced by the shown swagger-codegen command. Trace which generator template or entry point supplies the TypeScript devDependency, then verify the generated library with npm install and npm run build under Angular 9 or later. Done means the generated dependency range no longer selects an incompatible TypeScript version.