web3.js/lib/web3/errors.js

/*
    This file is part of web3.js.

    web3.js is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    web3.js 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with web3.js.  If not, see <http://www.gnu.org/licenses/>.
*/
/** 
 * @file errors.js
 * @author Marek Kotewicz <marek@ethdev.com>
 * @date 2015
 */

module.exports = {
    InvalidNumberOfParams: function () {
        return new Error('Invalid number of input parameters');
    },
    InvalidConnection: function (host){
        return new Error('CONNECTION ERROR: Couldn\'t connect to node '+ host +'.');
    },
    InvalidProvider: function () {
        return new Error('Provider not set or invalid');
    },
    InvalidResponse: function (result){
        var message = !!result && !!result.error && !!result.error.message ? result.error.message : 'Invalid JSON RPC response: ' + JSON.stringify(result);
        return new Error(message);
    }
};