I also write TS. Here is my solution in my personal project that would never fly at work. In your tsconfig.json set: * alwaysStrict: true * noImplicitAny: tr

I also write TS. Here is my solution in my personal project that would never fly at work. In your tsconfig.json set: * alwaysStrict: true * noImplicitAny: true * strictFunctionTypes: true Then I go a step further and wrote my own ESLint rules to: * eliminate classes * eliminate this * eliminate bind, call, and apply * eliminate addEventListener * eliminate try/catch I also use typescript-eslint package to lint against the TypeScript directly. That sounds draconian but it removes a tremendous amount complexity, laziness, and stupidity. Everything comes strongly typed without a bunch of guesswork.