You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
32 lines
953 B
32 lines
953 B
"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 != null ? currentProp[props[i]] : undefined; |
|
if (p !== void 0) { |
|
currentProp = p; |
|
} |
|
else { |
|
return undefined; |
|
} |
|
} |
|
return currentProp; |
|
}; |
|
return mapper; |
|
} |
|
//# sourceMappingURL=pluck.js.map
|