Function isSignal

packages/fresh/src/runtime/server/preact_hooks.ts:588–595

(x: any)

// deno-lint-ignore no-explicit-any
function isSignal(x: any): x is Signal {
  return (
    x !== null &&
    typeof x === "object" &&
    typeof x.peek === "function" &&
    "value" in x
  );
}

// deno-lint-ignore no-explicit-any
function isComputedSignal(x: any): x is ReadonlySignal {