| 'use strict'; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = _filter; |
| |
| var _isArrayLike = require('./isArrayLike'); |
| |
| var _isArrayLike2 = _interopRequireDefault(_isArrayLike); |
| |
| var _wrapAsync = require('./wrapAsync'); |
| |
| var _wrapAsync2 = _interopRequireDefault(_wrapAsync); |
| |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
| |
| function filterArray(eachfn, arr, iteratee, callback) { |
| var truthValues = new Array(arr.length); |
| eachfn(arr, (x, index, iterCb) => { |
| iteratee(x, (err, v) => { |
| truthValues[index] = !!v; |
| iterCb(err); |
| }); |
| }, err => { |
| if (err) return callback(err); |
| var results = []; |
| for (var i = 0; i < arr.length; i++) { |
| if (truthValues[i]) results.push(arr[i]); |
| } |
| callback(null, results); |
| }); |
| } |
| |
| function filterGeneric(eachfn, coll, iteratee, callback) { |
| var results = []; |
| eachfn(coll, (x, index, iterCb) => { |
| iteratee(x, (err, v) => { |
| if (err) return iterCb(err); |
| if (v) { |
| results.push({ index, value: x }); |
| } |
| iterCb(err); |
| }); |
| }, err => { |
| if (err) return callback(err); |
| callback(null, results.sort((a, b) => a.index - b.index).map(v => v.value)); |
| }); |
| } |
| |
| function _filter(eachfn, coll, iteratee, callback) { |
| var filter = (0, _isArrayLike2.default)(coll) ? filterArray : filterGeneric; |
| return filter(eachfn, coll, (0, _wrapAsync2.default)(iteratee), callback); |
| } |
| module.exports = exports['default']; |