Method expose_binding

playwright/_impl/_page.py:515–529

(self, name: str, callback: Callable)

        return await self.expose_binding(name, lambda source, *args: callback(*args))

    async def expose_binding(self, name: str, callback: Callable) -> Disposable:
        if name in self._bindings:
            raise Error(f'Function "{name}" has been already registered')
        if name in self._browser_context._bindings:
            raise Error(
                f'Function "{name}" has been already registered in the browser context'
            )
        self._bindings[name] = callback
        return from_channel(
            await self._channel.send(
                "exposeBinding",
                None,
                dict(name=name),
            )
        )

    async def set_extra_http_headers(self, headers: Dict[str, str]) -> None:
        await self._channel.send(