34 lines
1.0 KiB
Markdown
34 lines
1.0 KiB
Markdown
# stream-exhaust
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Ensure that the provided stream is flowing data, even if the stream hasn't been
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piped to another stream.
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```javascript
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var exhaustively = require('stream-exhaust');
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exhaustively(fs.createReadStream(__filename))
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.on('close', () => { console.log('all done, despite being streams{1+N}!') });
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```
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## Prior Art
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This is based on [stream-consume](https://github.com/aroneous/stream-consume)
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by [aroneous](https://github.com/aroneous). It is a separate package because it has
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different semantics:
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1. It does not call `.resume()` on streams2+ streams. streams2 streams monkeypatch `.pipe`
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when entering flowing mode; avoiding `resume()` avoids that fate.
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2. It does not examine `._readableState`; instead it checks for the presence of `._read`.
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## API
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### exhaust(Stream s) -> Stream s
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Takes a stream, `s`, and returns it. Ensures that the stream is flowing, either by calling
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`.resume()` if the stream is a streams1 stream, or by piping it to a "black hole" stream that
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continually asks for more data.
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## License
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MIT
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