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author | Yaroslav De La Peña Smirnov <yaros.rus_89@live.com.mx> | 2017-11-29 11:44:34 +0300 |
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committer | Yaroslav De La Peña Smirnov <yaros.rus_89@live.com.mx> | 2017-11-29 11:44:34 +0300 |
commit | 67fdec20726e48ba3a934cb25bb30d47ec4a4f29 (patch) | |
tree | 37fd9f4f0b0c20103e1646fc83021e4765de3680 /node_modules/after/index.js | |
download | spanish-checkers-67fdec20726e48ba3a934cb25bb30d47ec4a4f29.tar.gz spanish-checkers-67fdec20726e48ba3a934cb25bb30d47ec4a4f29.zip |
Initial commit, version 0.5.3
Diffstat (limited to 'node_modules/after/index.js')
-rw-r--r-- | node_modules/after/index.js | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/node_modules/after/index.js b/node_modules/after/index.js new file mode 100644 index 0000000..ec24879 --- /dev/null +++ b/node_modules/after/index.js @@ -0,0 +1,28 @@ +module.exports = after + +function after(count, callback, err_cb) { + var bail = false + err_cb = err_cb || noop + proxy.count = count + + return (count === 0) ? callback() : proxy + + function proxy(err, result) { + if (proxy.count <= 0) { + throw new Error('after called too many times') + } + --proxy.count + + // after first error, rest are passed to err_cb + if (err) { + bail = true + callback(err) + // future error callbacks will go to error handler + callback = err_cb + } else if (proxy.count === 0 && !bail) { + callback(null, result) + } + } +} + +function noop() {} |