After upgrade eslint says NodeJS is undefined

Question

I have upgraded Eslint from 7.7.0 to 7.10.0 and @types/node from 14.6.0 to 14.11.2. The application tsconfig.json defines types: ["node"] and typescript is version 4.0.3. Eslint is called with eslint --env node,es2020.

Before the upgrade Eslint never flagged any problem in my code. Now Eslint started complaining that NodeJS is not defined in the following code fragment:

private handleServerErrors(error: NodeJS.ErrnoException): void {
    if(error.code === "EADDRINUSE") {
        . . .

I silence the Eslint error and the compilation succeeded. So seems a problem specific to eslint, not the code.

The same problem happens in another file for namespace JQuery, but I had not yet investigated.

Is there anything I'm missing? Need to add some import? What has changed in eslint/typescript/node?

Thanks for your help! mario

Answer 1

In my case, @typescript-eslint/parser@4 causes this problem.

Downgrade it to v3 @typescript-eslint/parser@3 to solve the problem.

See: https://github.com/Chatie/eslint-config/issues/45