找不到名称 'sendResponse'

Question

chrome.runtime.onMessage.addListener(
function(props) {
switch(props) {
case props.request_type = 'msg':
websocketClass.msgSubmit(props.data)
break;
case props.request_type = 'url':
websocketClass.msgSubmit(props.data)
break;
case props.request_type = 'his':
sendResponse({his: websocketClass.messages});
        }
    }
);

我有一个问题，尽管我添加了@types/chrome，sendResponse 仍然returns 上述错误。我怎样才能完成这项工作？

Answer 1

sendResponse 不是全局符号，它是侦听器的参数但您只指定了 props，请参阅 documentation.
switch 永远不会匹配，它只会用值（'msg'、'url'、'his'）覆盖 request_type。

chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {
  switch (msg.request_type) {
    case 'msg':
    case 'url':
      websocketClass.msgSubmit(msg.data);
      break;
    case 'his':
      sendResponse({ his: websocketClass.messages });
    case 'foo':
      callFunctionThatReturnsPromise(msg).then(sendResponse);
      // Keeps the internal channel open for sendResponse after this listener exits.
      // Only use `return true` if you really invoke sendResponse asynchronously.
      return true;
  }
});

找不到名称 'sendResponse'

Cannot find name 'sendResponse'

google-chrome-extension

typescript