/**
 * Utility Functions for Secure-Scan
 */
import { SupportedLanguage, Severity } from '../types';
/**
 * Generate a unique ID
 */
export declare function generateId(): string;
/**
 * Calculate SHA256 hash of content
 */
export declare function calculateHash(content: string): string;
/**
 * Get language from file extension
 */
export declare function getLanguageFromExtension(filePath: string): SupportedLanguage | null;
/**
 * Check if file should be excluded
 */
export declare function shouldExclude(filePath: string, excludePatterns: string[]): boolean;
/**
 * Get file extension for syntax highlighting
 */
export declare function getHighlightLanguage(language: SupportedLanguage | null): string;
/**
 * Extract code context around a line
 */
export declare function extractCodeContext(content: string, lineNumber: number, contextLines?: number): {
    code: string;
    contextBefore: string;
    contextAfter: string;
};
/**
 * Count lines in content
 */
export declare function countLines(content: string): number;
/**
 * Severity to numeric value for comparison
 */
export declare function severityToNumber(severity: Severity): number;
/**
 * Compare severities
 */
export declare function isHigherOrEqualSeverity(a: Severity, b: Severity): boolean;
/**
 * Get severity color for reporting
 */
export declare function getSeverityColor(severity: Severity): string;
/**
 * Get severity badge class
 */
export declare function getSeverityBadge(severity: Severity): string;
/**
 * Format duration for display
 */
export declare function formatDuration(ms: number): string;
/**
 * Escape HTML for safe display
 */
export declare function escapeHtml(text: string): string;
/**
 * Truncate text with ellipsis
 */
export declare function truncate(text: string, maxLength: number): string;
/**
 * Check if string looks like Base64
 */
export declare function isBase64Like(str: string): boolean;
/**
 * Check if string looks like hex encoded
 */
export declare function isHexEncoded(str: string): boolean;
/**
 * Calculate Shannon entropy of a string
 * High entropy suggests encrypted/compressed/obfuscated content
 */
export declare function calculateEntropy(str: string): number;
/**
 * Check if code appears obfuscated based on entropy and patterns
 */
export declare function looksObfuscated(code: string): boolean;
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