Bug with generics: TS7060: This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma or explicit constraint.

[d00rsfan]

Generic function:
const someFunction = <T>(param: T) => param;

in .mts files must be trailing coma in generic type:
const someFunction = <T,>(param: T) => param;

Problem is in lib/shared.js:69
generics: baseStyleRules['comma-dangle'][1].arrays,

which is declared in rules/style.js:46 as arrays: 'always-multiline',