Function postWebKitMessage

packages/shared/src/lib/ios.ts:48–69

(
  handler: WebKitMessageHandlers,
  payload: T,
)

  messageHandlerExists(WebKitMessageHandlers.AppIconSet);

export const postWebKitMessage = <T = unknown>(
  handler: WebKitMessageHandlers,
  payload: T,
): void => {
  const webkitGlobal = globalThis as IOSWebkitGlobal;

  if (!isIOSNative()) {
    throw new Error('sendMessage is only available on iOS');
  }

  if (!messageHandlerExists(handler)) {
    throw new Error(`Message handler ${handler} does not exist`);
  }

  const messageHandler = webkitGlobal.webkit?.messageHandlers?.[handler];

  if (!messageHandler) {
    throw new Error(`Message handler ${handler} does not exist`);
  }

  messageHandler.postMessage(payload);
};