fix: only emit close on last request

emitting `close` early can affect the internal readable stream state.
previously, this was emitted on chunks and reconnects.

lib/index.js

@@ -51,11 +51,19 @@ const createStream = options => {
 const pipeAndSetEvents = (req, stream, end) => {
   // Forward events from the request to the stream.
   [
-    'abort', 'request', 'response', 'error', 'close', 'redirect', 'retry', 'reconnect',
+    'abort', 'request', 'response', 'error', 'redirect', 'retry', 'reconnect',
   ].forEach(event => {
     req.prependListener(event, stream.emit.bind(stream, event));
   });
   req.pipe(stream, { end });
+
+  // Emit `close` only when stream is already destroyed, in case there are multiple requests
+  // due to playlists, chunking, and reconnects.
+  req.on('close', () => {
+    if (stream.destroyed) {
+      stream.emit('close');
+    }
+  });
 };