1'use strict';
2
3Object.defineProperty(exports, "__esModule", {
4    value: true
5});
6exports.default = _filter;
7
8var _isArrayLike = require('./isArrayLike.js');
9
10var _isArrayLike2 = _interopRequireDefault(_isArrayLike);
11
12var _wrapAsync = require('./wrapAsync.js');
13
14var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
15
16function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
17
18function filterArray(eachfn, arr, iteratee, callback) {
19    var truthValues = new Array(arr.length);
20    eachfn(arr, (x, index, iterCb) => {
21        iteratee(x, (err, v) => {
22            truthValues[index] = !!v;
23            iterCb(err);
24        });
25    }, err => {
26        if (err) return callback(err);
27        var results = [];
28        for (var i = 0; i < arr.length; i++) {
29            if (truthValues[i]) results.push(arr[i]);
30        }
31        callback(null, results);
32    });
33}
34
35function filterGeneric(eachfn, coll, iteratee, callback) {
36    var results = [];
37    eachfn(coll, (x, index, iterCb) => {
38        iteratee(x, (err, v) => {
39            if (err) return iterCb(err);
40            if (v) {
41                results.push({ index, value: x });
42            }
43            iterCb(err);
44        });
45    }, err => {
46        if (err) return callback(err);
47        callback(null, results.sort((a, b) => a.index - b.index).map(v => v.value));
48    });
49}
50
51function _filter(eachfn, coll, iteratee, callback) {
52    var filter = (0, _isArrayLike2.default)(coll) ? filterArray : filterGeneric;
53    return filter(eachfn, coll, (0, _wrapAsync2.default)(iteratee), callback);
54}
55module.exports = exports['default'];