Search code examples
typescripteslinttypescript-eslint

How do I use express.Router in ts and eslint without error

I have tried to export a controller like below

export const IndexController: Router = Router();

I get the following error:

A function with a name starting with an uppercase letter should only be used as a constructor.eslintnew-cap

I have tried to preface this with the 'new' operator and get the following error.

'new' expression, whose target lacks a construct signature, implicitly has an 'any' type.

The only solution I know of is to add the comment eslint-disable-next-line new-cap but this isn't viable and I don't want to paste this every time I want to export a controller.

Solution

  • You can use the capIsNewExceptions option which:

    allows specified uppercase-started function names to be called without the new operator.

    Put it in your ESLint config with:

    "eslint new-cap": ["error", { "capIsNewExceptions": ["IndexController"] }]