Add typescript eslint rules #3457
Description
Describe the problem
The lack of eslint rules for the declaration files allow the type declarations to be inconsistent, specifically preferring interfaces over types or vice-versa and using the method notation (name(): ReturnType) over the function field notation (name: () => ReturnType).
Describe the proposed solution
Installing the typescript eslint packages to enforce style rules.
Alternatives considered
No response
Importance
nice to have
Additional Information
No response