Sourced from ws's releases.

8.0.0

Breaking changes

• The WebSocket constructor now throws a SyntaxError if any of the subprotocol names are invalid or duplicated (0aecf0c9).

• The server now aborts the opening handshake if an invalid Sec-WebSocket-Protocol header field value is received (1877ddeb).

• The protocols argument of handleProtocols hook is no longer an Array but a Set (1877ddeb).

• The opening handshake is now aborted if the Sec-WebSocket-Extensions header field value begins or ends with a white space (e814110e).

• Dropped support for Node.js < 10.0.0 (552b5067).

• The WebSocket constructor now throws a SyntaxError if the connection URL contains a fragment identifier or if the URL's protocol is not one of 'ws:', 'wss:', or 'ws+unix:' (ebea038f).

• Text messages and close reasons are no longer decoded to strings. They are passed as Buffers to the listeners of their respective events. The listeners of the 'message' event now take a boolean argument specifying whether or not the message is binary (e173423c).

  Existing code can be migrated by decoding the buffer explicitly.

  websocket.on('message', function message(data, isBinary) {
   const message = isBinary ? data : data.toString();
   // Continue as before.
  });
  websocket.on('close', function close(code, data) {
  const reason = data.toString();
  // Continue as before.
  });

• The package now uses an ES module wrapper (78adf5f7).

• WebSocketServer.prototype.close() no longer closes existing connections (df7de574).

  Existing code can be migrated by closing the connections manually.

  websocketServer.close();
  for (const ws of websocketServer.clients) {
   ws.terminate();
  }

• The callback of WebSocketServer.prototype.close() is now called with an error if the server is already closed (abde9cfc).

• WebSocket.prototype.addEventListener() is now a noop if the type argument

... (truncated)

• fc40248 [dist] 8.0.0
• 21e6500 [major] Overhaul event classes
• bd7febb [minor] Fix nits
• 6756cf5 [fix] Return null if the event handler is not set
• 8c61563 [fix] Make listeners added via event handler properties independent
• ea95d9c [major] Ignore listeners not added with WebSocket#addEventListener()
• 9558ed1 [major] Make WebSocket#addEventListener() ignore non standard events
• 77a675c [minor] Remove unneeded setters
• 64b3c71 [pkg] Update mocha to version 8.4.0
• abde9cf [major] Call the callback with an error if the server is closed
• Additional commits viewable in compare view

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