Sha256: 153453c4d84a3c2f13589c37055a7daff61d48475dcce554f7eedad15fc7b3e5
Contents?: true
Size: 905 Bytes
Versions: 1036
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Stored size: 905 Bytes
Contents
// Returns a wrapper function that returns a wrapped callback
// The wrapper function should do some stuff, and return a
// presumably different callback function.
// This makes sure that own properties are retained, so that
// decorations and such are not lost along the way.
module.exports = wrappy
function wrappy (fn, cb) {
if (fn && cb) return wrappy(fn)(cb)
if (typeof fn !== 'function')
throw new TypeError('need wrapper function')
Object.keys(fn).forEach(function (k) {
wrapper[k] = fn[k]
})
return wrapper
function wrapper() {
var args = new Array(arguments.length)
for (var i = 0; i < args.length; i++) {
args[i] = arguments[i]
}
var ret = fn.apply(this, args)
var cb = args[args.length-1]
if (typeof ret === 'function' && ret !== cb) {
Object.keys(cb).forEach(function (k) {
ret[k] = cb[k]
})
}
return ret
}
}
Version data entries
1,036 entries across 414 versions & 47 rubygems