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doc: make unshift doc compliant with push doc #28953

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doc: make unshift doc compliant with push doc #28953

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doc: make unshift doc compliant with push doc
EduardoRFS Aug 4, 2019
69798b2
Update doc/api/stream.md
EduardoRFS Aug 4, 2019
6234ca3
fixup! Update doc/api/stream.md
Trott Aug 6, 2019
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9 changes: 6 additions & 3 deletions doc/api/stream.md
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Expand Up @@ -1244,13 +1244,16 @@ changes:
description: The `chunk` argument can now be a `Uint8Array` instance.
-->

* `chunk` {Buffer|Uint8Array|string|any} Chunk of data to unshift onto the
* `chunk` {Buffer|Uint8Array|string|null|any} Chunk of data to unshift onto the
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read queue. For streams not operating in object mode, `chunk` must be a
string, `Buffer` or `Uint8Array`. For object mode streams, `chunk` may be
any JavaScript value other than `null`.
string, `Buffer`, `Uint8Array` or `null`. For object mode streams, `chunk`
may be any JavaScript value.
* `encoding` {string} Encoding of string chunks. Must be a valid
`Buffer` encoding, such as `'utf8'` or `'ascii'`.

Passing `chunk` as `null` signals the end of the stream (EOF), after which no
more data can be written.

The `readable.unshift()` method pushes a chunk of data back into the internal
buffer. This is useful in certain situations where a stream is being consumed by
code that needs to "un-consume" some amount of data that it has optimistically
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