time-to-botec

Benchmark sampling in different programming languages
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index.js (746B)

      1 export function isStream(stream) {
      2 	return stream !== null
      3 		&& typeof stream === 'object'
      4 		&& typeof stream.pipe === 'function';
      5 }
      6 
      7 export function isWritableStream(stream) {
      8 	return isStream(stream)
      9 		&& stream.writable !== false
     10 		&& typeof stream._write === 'function'
     11 		&& typeof stream._writableState === 'object';
     12 }
     13 
     14 export function isReadableStream(stream) {
     15 	return isStream(stream)
     16 		&& stream.readable !== false
     17 		&& typeof stream._read === 'function'
     18 		&& typeof stream._readableState === 'object';
     19 }
     20 
     21 export function isDuplexStream(stream) {
     22 	return isWritableStream(stream)
     23 		&& isReadableStream(stream);
     24 }
     25 
     26 export function isTransformStream(stream) {
     27 	return isDuplexStream(stream)
     28 		&& typeof stream._transform === 'function';
     29 }