auth_error_handler.js

const handleError = (err: AxiosError): Promise<ISignUpResponse> => {
    if (!err.response) {
        return Promise.reject({
            error: {
                code: 'UnresolvedError',
                fields: [],
                description: i18n.t('common:error.unresolvedError')
            }
        });
    }

    const {
        error,
        error_code,
        error_description
    } = err.response.data;

    let property = null;
    let description = null;

    if (error_code) {
        if (error.data) {
            property = error.data[0].property;
            description = error.data[0].description;
        }

        return Promise.reject({
            error: {
                code: property || error_code || error,
                fields: ['Login', 'Password'],
                description: description || error_description
            } as IError
        });
    }

    if (error.code) {
        return Promise.reject({
            error: {
                ...error,
                fields: ['Login', 'Password']
            } as IError
        });
    }

    const { data: errorData } = error;
    const fields = errorData.fields || [];

    if (fields.length) {
        description = fields[0].error;
    }

    return Promise.reject({
        error: {
            code: error.code,
            fields: fields.map((item) => item.field),
            description
        } as IError
    });
};