Last change
on this file since 84d0fbb was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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Property mode
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100644
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File size:
588 bytes
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[6a3a178] | 1 | var stream = require('stream')
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| 2 |
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| 3 |
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| 4 | function isStream (obj) {
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| 5 | return obj instanceof stream.Stream
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| 6 | }
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| 7 |
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| 8 |
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| 9 | function isReadable (obj) {
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| 10 | return isStream(obj) && typeof obj._read == 'function' && typeof obj._readableState == 'object'
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| 11 | }
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| 12 |
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| 13 |
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| 14 | function isWritable (obj) {
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| 15 | return isStream(obj) && typeof obj._write == 'function' && typeof obj._writableState == 'object'
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| 16 | }
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| 17 |
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| 18 |
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| 19 | function isDuplex (obj) {
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| 20 | return isReadable(obj) && isWritable(obj)
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| 21 | }
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| 22 |
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| 23 |
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| 24 | module.exports = isStream
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| 25 | module.exports.isReadable = isReadable
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| 26 | module.exports.isWritable = isWritable
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| 27 | module.exports.isDuplex = isDuplex
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