Function isNativeModifiersHelper

packages/pi-tui/src/native-modifiers.ts:15–19

(value: unknown)

let nativeModifiersHelper: NativeModifiersHelper | null | undefined;

function isNativeModifiersHelper(value: unknown): value is NativeModifiersHelper {
	if (typeof value !== "object" || value === null) return false;
	const candidate = (value as { isModifierPressed?: unknown }).isModifierPressed;
	return typeof candidate === "function";
}

function loadNativeModifiersHelper(): NativeModifiersHelper | undefined {
	if (nativeModifiersHelper !== undefined) return nativeModifiersHelper ?? undefined;