Function binding

tests/async/test_page.py:441–443

(source: Dict, a: int, b: int)

    binding_source = []

    def binding(source: Dict, a: int, b: int) -> int:
        binding_source.append(source)
        return a + b

    await page.expose_binding("add", lambda source, a, b: binding(source, a, b))