description

# postMessage method Null safety

void postMessage (

1. dynamic message,
2. String targetOrigin,
3. [List<Object>? transfer]

)
override

Sends a cross-origin message.

## Other resources

- window.postMessage from MDN.
- Cross-document messaging from WHATWG.

## Implementation

    void postMessage(/*any*/ message, String targetOrigin,
        [List<Object>? transfer]) {
      if (transfer != null) {
        var message_1 = convertDartToNative_SerializedScriptValue(message);
        _postMessage_1(message_1, targetOrigin, transfer);
        return;
      }
      var message_1 = convertDartToNative_SerializedScriptValue(message);
      _postMessage_2(message_1, targetOrigin);
      return;
    }