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Matt McKegg / mutant



Tree: 01e9e1d516a0bcf09d486425ab7cba0f919f5a1a

Files: 01e9e1d516a0bcf09d486425ab7cba0f919f5a1a / once-true.js

315 bytesRaw
1var watch = require('./watch')
2module.exports = function onceTrue (value, fn) {
3 var done = false
4 var release = watch(value, (v) => {
5 if (v && !done) {
6 done = true
7 setImmediate(doRelease)
8 fn(v)
9 }
10 }, { nextTick: true })
11
12 return release
13
14 function doRelease () {
15 release()
16 }
17}
18

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