dbmedialab/reader-critics

//
// LESERKRITIKK v2 (aka Reader Critics)
// Copyright (C) 2017 DB Medialab/Aller Media AS, Oslo, Norway
// https://github.com/dbmedialab/reader-critics/
//
// This program is free software: you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your option) any later
// version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with
// this program. If not, see <http://www.gnu.org/licenses/>.
//

import { MongoError } from 'mongodb';

export const isDuplicateError = (err : Error) : boolean => (
    err instanceof MongoError && err.code === 11000
);

export class DuplicateError extends Error {

    constructor(err : MongoError) {
        super(err.message.replace(/^.*key error index:/, '').trim());
        Object.setPrototypeOf(this, DuplicateError.prototype);
        this.name = 'DuplicateError';
    }

}