Angular.js ObjectId to Date filter

angular-idToDate-filter.js

/**
 * Extracts creation timestamp from ObjectId.
 *
 * Usage for default id mongoose objects in html:
 * {{ object._id | idToDate | date:'medium' }}
 */
angular.module('idToDate').filter('idToDate', [function() {
    return function idToDate (objectId) {
        return new Date(parseInt(objectId.slice(0, 8), 16) * 1000);
    };
}]);