unshift
The readable.unshift() method pushes a chunk of data back into the internal buffer for the stream.
This is useful in certain cases where a stream is being consumed by a parser, which needs to "un-consume" some data that it has optimistically pulled out of the source, so that it can be processed by a different parser.
Parameters
chunk
The chunk of data to unshift.
The readable.unshift() method pushes a chunk of data back into the internal buffer for the stream.
This is useful in certain cases where a stream is being consumed by a parser, which needs to "un-consume" some data that it has optimistically pulled out of the source, so that it can be processed by a different parser.
Parameters
chunk
The chunk of data to unshift.
encoding
The encoding of the chunk.