# all files / packages/web3-core-helpers/src/ errors.js

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     /*
        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 Fabian Vogelsteller <fabian@ethereum.org>
     * @author Marek Kotewicz <marek@ethcore.io>
     * @date 2017
     */

    "use strict";

    module.exports = {
        ErrorResponse: function (result) {
            var message = !!result && !!result.error && !!result.error.message ? result.error.message : 'Returned error: ' + JSON.stringify(result);
            return new Error(message);
        },
        InvalidNumberOfParams: function (got, expected, method) {
            return new Error('Invalid number of parameters for "'+ method +'". Got '+ got +' expected '+ expected +'!');
        },
        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);
        },
        ConnectionTimeout: function (ms){
            return new Error('CONNECTION TIMEOUT: timeout of ' + ms + ' ms achived');
        }
    };