id: no-unknown-parameters
valid:
  - "function f(x: string) {}"
  - "function f(cause: unknown) {}"
  - "const g = (cause?: unknown) => {};"
  - "class C { m(cause: unknown) {} }"
invalid:
  - "function f(x: unknown) {}"
  - "const g = (x: unknown) => {};"
  - "class C { m(x: unknown) {} }"
  - "interface I { m(x: unknown): void; }"
  - "function f(x?: unknown) {}"