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dangerousbeans / dangerous_patchbay



forked from Dominic / patchbay

Tree: 74fe7cba24a1be16ab96edeb828f80c1740bef44

Files: 74fe7cba24a1be16ab96edeb828f80c1740bef44 / plugs.js

939 bytesRaw
1exports.first = function first(plug) {
2  return function () {
3    var args = [].slice.call(arguments)
4    for(var i = 0; i < plug.length; i++) {
5      var val = plug[i].apply(null, args)
6      if(val) return val
7    }
8  }
9}
10
11exports.map = function (plug) {
12  return function () {
13    var args = [].slice.call(arguments)
14    return plug.map(function (fn) {
15      if(fn) return fn.apply(null, args)
16    }).filter(Boolean)
17  }
18}
19
20exports.asyncConcat = function (plug) {
21  return function () {
22    var args = [].slice.call(arguments)
23    var cb = args.pop()
24    var allResults = []
25    var waiting = plug.length
26    plug.forEach(function (fn) {
27      if (!fn) return next()
28      fn.apply(null, args.concat(next))
29    })
30    function next(err, results) {
31      if (err) {
32        waiting = 0
33        return cb(err)
34      }
35      if (results) allResults = allResults.concat(results)
36      if (--waiting === 0) cb(null, allResults)
37    }
38  }
39}
40
41

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