25 lines
755 B
Plaintext
25 lines
755 B
Plaintext
import { map } from './map';
|
|
export 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 map(function (x) {
|
|
var currentProp = x;
|
|
for (var i = 0; i < length; i++) {
|
|
var p = currentProp === null || currentProp === void 0 ? void 0 : currentProp[properties[i]];
|
|
if (typeof p !== 'undefined') {
|
|
currentProp = p;
|
|
}
|
|
else {
|
|
return undefined;
|
|
}
|
|
}
|
|
return currentProp;
|
|
});
|
|
}
|
|
//# sourceMappingURL=pluck.js.map |