git ssb

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'use strict'
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function id (e) { return e }
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var prop = require('../util/prop')
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var drain = require('./drain')
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module.exports = function find (test, cb) {
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  var ended = false
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  if(!cb)
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    cb = test, test = id
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  else
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    test = prop(test) || id
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  return drain(function (data) {
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    if(test(data)) {
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      ended = true
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      cb(null, data)
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    return false
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    }
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  }, function (err) {
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    if(ended) return //already called back
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    cb(err === true ? null : err, null)
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  })
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}
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