import { QueryRunner } from "../query-runner/QueryRunner";
/**
 * Performs logging of the events in TypeORM.
 */
export interface Logger {
    /**
     * Logs query and parameters used in it.
     */
    logQuery(query: string, parameters?: any[], queryRunner?: QueryRunner): any;
    /**
     * Logs query that is failed.
     */
    logQueryError(error: string | Error, query: string, parameters?: any[], queryRunner?: QueryRunner): any;
    /**
     * Logs query that is slow.
     */
    logQuerySlow(time: number, query: string, parameters?: any[], queryRunner?: QueryRunner): any;
    /**
     * Logs events from the schema build process.
     */
    logSchemaBuild(message: string, queryRunner?: QueryRunner): any;
    /**
     * Logs events from the migrations run process.
     */
    logMigration(message: string, queryRunner?: QueryRunner): any;
    /**
     * Perform logging using given logger, or by default to the console.
     * Log has its own level and message.
     */
    log(level: "log" | "info" | "warn", message: any, queryRunner?: QueryRunner): any;
}
/**
 * Log level.
 */
export type LogLevel = "query" | "schema" | "error" | "warn" | "info" | "log" | "migration";
/**
 * Log message.
 */
export type LogMessage = {
    type?: LogMessageType;
    prefix?: string;
    message: string | number;
    format?: LogMessageFormat;
    parameters?: any[];
    additionalInfo?: Record<string, any>;
};
/**
 * Log message format.
 */
export type LogMessageFormat = "sql";
/**
 * Log message type.
 */
export type LogMessageType = "log" | "info" | "warn" | "error" | "query" | "query-error" | "query-slow" | "schema-build" | "migration";
/**
 * Options for prepare log messages
 */
export type PrepareLogMessagesOptions = {
    highlightSql: boolean;
    appendParameterAsComment: boolean;
    addColonToPrefix: boolean;
};
