salix/loopback/util/user-error.js

/**
 * Class used for user-readable errors. All thrown errors of this
 * class will be translated, propagated to the client and displayed to
 * the final user, so they cannot contain sensitive data and must
 * be understandable by people who do not have a technical profile.
 */
module.exports = class UserError extends Error {
    constructor(message, code, ...translateArgs) {
        super(message);
        this.name = 'UserError';
        this.statusCode = 400;
        this.code = code;
        this.translateArgs = translateArgs;
    }
};