| "use strict"; |
| Object.defineProperty(exports, "__esModule", { value: true }); |
| var map_1 = require("./map"); |
| function pluck() { |
| var properties = []; |
| for (var _i = 0; _i < arguments.length; _i++) { |
| properties[_i] = arguments[_i]; |
| } |
| var length = properties.length; |
| if (length === 0) { |
| throw new Error('list of properties cannot be empty.'); |
| } |
| return function (source) { return map_1.map(plucker(properties, length))(source); }; |
| } |
| exports.pluck = pluck; |
| function plucker(props, length) { |
| var mapper = function (x) { |
| var currentProp = x; |
| for (var i = 0; i < length; i++) { |
| var p = currentProp[props[i]]; |
| if (typeof p !== 'undefined') { |
| currentProp = p; |
| } |
| else { |
| return undefined; |
| } |
| } |
| return currentProp; |
| }; |
| return mapper; |
| } |
| //# sourceMappingURL=pluck.js.map |