Function isInvalidPinSourceForThread

lib/shared/message-utils.js:558–565

(
  messageInfo: RawMessageInfo | MessageInfo,
  threadInfo: LegacyRawThreadInfo | RawThreadInfo | ThreadInfo,
)

}

function isInvalidPinSourceForThread(
  messageInfo: RawMessageInfo | MessageInfo,
  threadInfo: LegacyRawThreadInfo | RawThreadInfo | ThreadInfo,
): boolean {
  const isValidPinSource = !isInvalidPinSource(messageInfo);
  const isFirstMessageInSidebar = threadInfo.sourceMessageID === messageInfo.id;
  return !isValidPinSource || isFirstMessageInSidebar;
}

function isUnableToBeRenderedIndependently(
  message: RawMessageInfo | MessageInfo,