module.exports = shift
|
|
function shift (stream) {
|
var rs = stream._readableState
|
if (!rs) return null
|
return (rs.objectMode || typeof stream._duplexState === 'number') ? stream.read() : stream.read(getStateLength(rs))
|
}
|
|
function getStateLength (state) {
|
if (state.buffer.length) {
|
// Since node 6.3.0 state.buffer is a BufferList not an array
|
if (state.buffer.head) {
|
return state.buffer.head.data.length
|
}
|
|
return state.buffer[0].length
|
}
|
|
return state.length
|
}
|
