/**
 * Type representing a logger function.
 * @template T - The type of data the logger function accepts.
 */
type LoggerFn<T> = (data: T) => void;
/**
 * Type representing logger data.
 * @template T - The type of the data object.
 */
type LoggerData<T extends object> = T & {
    /**
     * The method used for logging.
     */
    method: string;
};
/**
 * Type representing logger options.
 * @template T - The type of the data object.
 * @template Fields - The keys of the data object.
 */
type LoggerOptions<T, Fields extends keyof T> = {
    /**
     * The logger configuration, which can be one of three types:
     * - 'all': log all fields, optionally using a custom logger function.
     * - 'omit': omit certain fields from logging, optionally using a custom logger function.
     * - 'pick': log only certain fields, optionally using a custom logger function.
     */
    logger: {
        type?: 'all';
        /**
         * An optional custom logger function for logging all fields.
         */
        loggerFn?: LoggerFn<T>;
    } | {
        type: 'omit';
        fields: Fields[];
        /**
         * An optional custom logger function for logging all fields except those specified.
         */
        loggerFn?: LoggerFn<Omit<T, Fields>>;
    } | {
        type: 'pick';
        fields: Fields[];
        /**
         * An optional custom logger function for logging only the specified fields.
         */
        loggerFn?: LoggerFn<Pick<T, Fields>>;
    };
};

export type { LoggerData as L, LoggerOptions as a };