mirror of
https://github.com/Instadapp/Swap-Aggregator-Subgraph.git
synced 2024-07-29 21:57:12 +00:00
29 lines
478 B
JavaScript
29 lines
478 B
JavaScript
'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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