TypeError with typescript export class (2.21.0 and 2.21.1)

[daddyman]

After upgrading from 2.20.2 to 2.21.1 (2.21.0 also fails) I get this error during linting. The error does not occur if I revert back to 2.20.2 (all other packages the same).

> eslint -c .eslintrc.js --ext .ts src


Oops! Something went wrong! :(

ESLint: 7.2.0

TypeError: Cannot read property 'value' of null
Occurred while linting c:\dev\mob\webservices\src\helpers\auth-helper.ts:2
    at ExportNamedDeclaration (c:\dev\mob\webservices\node_modules\eslint-plugin-import\lib\rules\no-internal-modules.js:111:44)
    at c:\dev\mob\webservices\node_modules\eslint\lib\linter\safe-emitter.js:45:58
    at Array.forEach (<anonymous>)
    at Object.emit (c:\dev\mob\webservices\node_modules\eslint\lib\linter\safe-emitter.js:45:38)
    at NodeEventGenerator.applySelector (c:\dev\mob\webservices\node_modules\eslint\lib\linter\node-event-generator.js:254:26)
    at NodeEventGenerator.applySelectors (c:\dev\mob\webservices\node_modules\eslint\lib\linter\node-event-generator.js:283:22)
    at NodeEventGenerator.enterNode (c:\dev\mob\webservices\node_modules\eslint\lib\linter\node-event-generator.js:297:14)
    at CodePathAnalyzer.enterNode (c:\dev\mob\webservices\node_modules\eslint\lib\linter\code-path-analysis\code-path-analyzer.js:635:23)
    at c:\dev\mob\webservices\node_modules\eslint\lib\linter\linter.js:949:32
    at Array.forEach (<anonymous>)

The code in auth-helper.ts starts with:

export class AuthHelper {	// This is line 2

    public static checkAuth(auth?: string): boolean {
    }
}