Files: 149f6bea0b174eebfb9243bd4b94384adb0ac740 / once-true.js
315 bytesRaw
| 1 | var watch = require('./watch') |
| 2 | module.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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