@notross/mongo-singleton/cjs/utils/logger.d.ts

A lightweight, zero-fuss way to get a single shared MongoDB connection across your Node.js codebase.

import { LoggerCallback, LogLevel, LogMethod, LogResult } from '../types';
/**
 * Logger with in-memory history, optional console output,
 * and user-supplied callback support. Supports filtering by level.
 */
export declare class Logger {
    private callback;
    private logging;
    logs: LogResult[];
    private levels?;
    debug: LogMethod;
    error: LogMethod;
    info: LogMethod;
    log: LogMethod;
    warn: LogMethod;
    /**
     * @param props.logging - Whether logs are echoed to console. Defaults to true.
     * @param props.logLevels - If provided, only these levels will be output.
     * @param props.callback - Optional function invoked with every log entry.
     */
    constructor(props?: {
        logging?: boolean;
        logLevels?: LogLevel[];
        callback?: LoggerCallback;
    });
    /**
     * Set which log levels are allowed to emit.
     * @param levels - Array of allowed LogLevel values. Undefined resets to all.
     */
    setLevels(levels?: LogLevel[]): void;
    /**
     * Toggle console logging on or off.
     * @param logging - If provided, sets explicitly; otherwise flips current state.
     */
    toggleLogging(logging?: boolean): void;
    /**
     * Internal output to console respecting level filters.
     * @private
     */
    private output;
    /**
     * Core log runner; formats the message, stores it, invokes callback, and outputs.
     * @private
     */
    private run;
}
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