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编辑当前文件:/home/freeclou/app.optimyar.com/backend/node_modules/is-stream/index.js
'use strict'; const isStream = stream => stream !== null && typeof stream === 'object' && typeof stream.pipe === 'function'; isStream.writable = stream => isStream(stream) && stream.writable !== false && typeof stream._write === 'function' && typeof stream._writableState === 'object'; isStream.readable = stream => isStream(stream) && stream.readable !== false && typeof stream._read === 'function' && typeof stream._readableState === 'object'; isStream.duplex = stream => isStream.writable(stream) && isStream.readable(stream); isStream.transform = stream => isStream.duplex(stream) && typeof stream._transform === 'function'; module.exports = isStream;