generic-errors/baseError.js

Generic errors with common http codes

var captureStackTrace = require('capture-stack-trace');

function BaseError(data) {
    var oldLimit = Error.stackTraceLimit,
        error;

    Error.stackTraceLimit = 20;

    error = Error.apply(this, arguments);

    Error.stackTraceLimit = oldLimit;

    captureStackTrace(this, BaseError);

    this.__genericError = true;

    if (typeof data === 'string') {
        this.message = data;
    } else {
        for (var key in data) {
            this[key] = data[key];
        }

        if (!this.message && data && data.message) {
            this.message = data.message;
        }
    }

    if (!this.message) {
        this.message = this.toString();
    }
}
BaseError.prototype = Object.create(Error.prototype);
BaseError.prototype.constructor = BaseError;
BaseError.prototype.toString = function () {
    return this.message || this.code + ': ' + this.constructor.name;
};
BaseError.prototype.valueOf = function () {
    return this;
};
BaseError.prototype.toJSON = function () {
    var result = {};

    for (var key in this) {
        if (typeof this[key] !== 'function') result[key] = this[key];
    }

    return result;
};
BaseError.prototype.code = 500;
BaseError.isGenericError = function (obj) {
    return obj instanceof BaseError || (obj != null && obj.__genericError);
};

module.exports = BaseError;