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27 lines
588 B
27 lines
588 B
var stream = require('stream') |
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function isStream (obj) { |
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return obj instanceof stream.Stream |
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} |
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function isReadable (obj) { |
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return isStream(obj) && typeof obj._read == 'function' && typeof obj._readableState == 'object' |
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} |
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function isWritable (obj) { |
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return isStream(obj) && typeof obj._write == 'function' && typeof obj._writableState == 'object' |
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} |
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function isDuplex (obj) { |
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return isReadable(obj) && isWritable(obj) |
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} |
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module.exports = isStream |
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module.exports.isReadable = isReadable |
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module.exports.isWritable = isWritable |
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module.exports.isDuplex = isDuplex
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