Ghost/core/server/errors/not-found-error.js

// # Not found error
// Custom error class with status code and type prefilled.

function NotFoundError(message) {
    this.message = message;
    this.stack = new Error().stack;
    this.statusCode = 404;
    this.errorType = this.name;
}

NotFoundError.prototype = Object.create(Error.prototype);
NotFoundError.prototype.name = 'NotFoundError';

module.exports = NotFoundError;