Hierarchical error objects in Node.js (example for prototypal inheritance)

app.js

// Tested with Node.js v0.10.35.

/*jslint node: true, maxerr: 50, maxlen: 80 */

'use strict';

var customErrors = require('./custom_errors'), test;

test = function () {
    console.log(customErrors.isbnError);
    console.log(customErrors.isbnError.withMessage('Just a test!'));
    console.log(customErrors.invalidArgumentError.isPrototypeOf(
        customErrors.isbnError
    ));
    console.log(customErrors.invalidArgumentError.isPrototypeOf(
        customErrors.germanIsbnError
    ));
    console.log(customErrors.isbnError.isPrototypeOf(
        customErrors.germanIsbnError
    ));
    console.log(customErrors.isbnError.isPrototypeOf(
        customErrors.permissionError
    ));
};

test();

custom_errors.js

// Creates a tree of error objects.

/*jslint node: true, maxerr: 50, maxlen: 80 */

'use strict';

var customError = new Error(), createError, exportError;

createError = function (name, proto) {
    var error = Object.create(proto || customError, {
        name: {value: name},
        withMessage: {value: function (message) {
            error.message = message;
            return error;
        }}
    });
    return error;
};

exportError = function (name, nameOfProto) {
    var proto = module.exports[nameOfProto],
        error = createError(name, proto);

    Object.defineProperty(module.exports, name, {
        get: function get() {
            name.message = '';
            Error.captureStackTrace(error, get);
            return error;
        }
    });
};

exportError('invalidArgumentError');
exportError('isbnError', 'invalidArgumentError');
exportError('germanIsbnError', 'isbnError');
exportError('permissionError');