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Diffstat (limited to 'build-es/whilst.js')
-rw-r--r-- | build-es/whilst.js | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/build-es/whilst.js b/build-es/whilst.js new file mode 100644 index 0000000..2f5c2ef --- /dev/null +++ b/build-es/whilst.js @@ -0,0 +1,15 @@ +'use strict'; + +import noop from 'lodash-es/noop'; +import rest from 'lodash-es/rest'; + +export default function whilst(test, iterator, cb) { + cb = cb || noop; + if (!test()) return cb(null); + var next = rest(function(err, args) { + if (err) return cb(err); + if (test.apply(this, args)) return iterator(next); + cb.apply(null, [null].concat(args)); + }); + iterator(next); +} |