Add random function input Fuzzers?

[pke]

I have the real-life use case of needing to harden my tested (typescript) functions against invalid input.

Lets say a function under test accepts 2 arguments: an array and a string. Of course TS ensure during writing code that the types match. However, the functions input can also come from user input and/or remote server data and during runtime TS naturally has nothing to say ;)
So I came up with this helper function I think we could add to Fuzzers maybe or better integrate into jest as an expect extension?

function invalidInput(f: Function, expected: any) {
  const testValues = [true, false, 0, "", undefined, null, [], {}]
  testValues.forEach((value) => {
    expect(f.apply(f, new Array(f.length).fill(value))).toBe(expected)
  })
}

It probes the function f with inputs of all kind of inputs: true, false, 0, "", undefined, null, [], {}.
I could imagine having a Fuzzer that can be created from given f and does not generate random values, but those testValues.

What do you think, does this make sense or is this out of scope for fuzzy testing?