improve server action transform

[hi-ogawa]

probably what's missing is

• closure bind value encryption
• smarter bind (e.g. bind only leaf property x.y instead of full x)
• handle when "use server" appears both at the top and inside closure

[hi-ogawa]

EDIT: fixed by #526

Also, "higher order" action seems not working, so we need to investigate.

vite-plugins/packages/react-server/examples/next/app/actions/header/validator.ts

Lines 3 to 11 in ba18e40

	export function validator(action: any) {
	return async function (arg: string) {
	"use server";
	const auth = cookies().get("auth");
	if (auth?.value !== "1") {
	throw new Error("Unauthorized request");
	}
	return action(arg);
	};

vite-plugins/packages/react-server/examples/next/app/actions/header/page.tsx

Lines 19 to 24 in ba18e40

	// TODO: probably nested server action closure not working
	getAuthedUppercase={validator(async (str: string) => {
	"use server";
	return prefix + " " + str.toUpperCase();
	})}
	/>