id: no-runtime-typeof
valid:
  - |
    function isFoo(x: unknown): x is Foo {
      return typeof x === "object";
    }
  - |
    const isBar = (x: unknown): x is Bar => typeof x === "object";
  - |
    function parseThing(x: unknown) {
      return typeof x === "string";
    }
  - |
    const validateThing = (x: unknown) => typeof x === "string";
  - |
    class C {
      isFoo(x: unknown): x is Foo {
        return typeof x === "object";
      }
    }
invalid:
  - |
    function plain(x: unknown) {
      return typeof x === "string";
    }
  - |
    const check = (x: unknown) => typeof x === "string";
  - |
    class C {
      plain(x: unknown) {
        return typeof x === "string";
      }
    }