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Only check if ancient when not in browser #58

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Only check if ancient when not in browser #58

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6 changes: 4 additions & 2 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,15 +3,17 @@ var eos = require('end-of-stream')
var fs = require('fs') // we only need fs to get the ReadStream and WriteStream prototypes

var noop = function () {}
var ancient = /^v?\.0/.test(process.version)

var isFn = function (fn) {
return typeof fn === 'function'
}

var isFS = function (stream) {
if (!ancient) return false // newer node version do not need to care about fs is a special way
if (!fs) return false // browser

var ancient = /^v?\.0/.test(process.version)
if (!ancient) return false // newer node version do not need to care about fs is a special way

return (stream instanceof (fs.ReadStream || noop) || stream instanceof (fs.WriteStream || noop)) && isFn(stream.close)
}

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