Function speak

src/functional.spec.ts:122–130

(animal: Animal)

    // eslint-disable-next-line
    function speak(animal: Animal): void {
      if (animal.type === "bird") {
        console.log("chirp");
        return;
      }
      // This line must cause the containing function to fail
      // compilation if uncommented
      // f.assertExhaustive(animal);
    }
  });

  describe("partition", () => {