logs-interceptor-node14/dist/utils.d.ts

High-performance, production-ready log interceptor for Node.js 14 applications with Loki integration

import { LogsInterceptorConfig } from './types';
/**
 * Safely stringify any value, handling circular references and non-serializable objects
 */
export declare function safeStringify(value: unknown, maxDepth?: number): string;
/**
 * Detect sensitive data in a string
 */
export declare function detectSensitiveData(text: string, patterns: RegExp[]): boolean;
/**
 * Sanitize sensitive data from an object
 */
export declare function sanitizeData(data: Record<string, unknown>, sensitivePatterns: RegExp[]): Record<string, unknown>;
/**
 * Hash sensitive data for tracking without exposing it
 */
export declare function hashSensitiveData(data: string): string;
/**
 * Parse labels from environment variable string format
 * Format: "key1=value1,key2=value2"
 */
export declare function parseLabels(labelsString: string): Record<string, string>;
/**
 * Determine if a log should be sampled based on sampling rate
 */
export declare function shouldSample(rate: number): boolean;
/**
 * Enhanced sampling with support for different strategies
 */
export declare function shouldSampleAdvanced(rate: number, strategy?: 'random' | 'deterministic' | 'adaptive', key?: string): boolean;
/**
 * Format bytes to human readable string
 */
export declare function formatBytes(bytes: number): string;
/**
 * Calculate compression ratio
 */
export declare function calculateCompressionRatio(original: number, compressed: number): number;
/**
 * Load configuration from environment variables
 */
export declare function loadConfigFromEnv(): Partial<LogsInterceptorConfig>;
/**
 * Merge configurations with precedence: user config > env config > defaults
 */
export declare function mergeConfigs(userConfig: Partial<LogsInterceptorConfig>, envConfig: Partial<LogsInterceptorConfig>): Partial<LogsInterceptorConfig>;
/**
 * Validate that required configuration is present
 */
export declare function validateConfig(config: Partial<LogsInterceptorConfig>): string[];
/**
 * Create a correlation ID for request tracking
 */
export declare function createCorrelationId(): string;
/**
 * Extract metadata from Error objects
 */
export declare function extractErrorMetadata(error: Error): Record<string, unknown>;
/**
 * Parse stack trace to extract useful information
 */
export declare function parseStackTrace(stack: string): Array<{
    function: string;
    file: string;
    line: number;
    column: number;
}>;
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