/**
 * Shannon entropy analysis for detecting obfuscated/encoded payloads.
 *
 * High entropy (>6.0) in source code files indicates compressed, encoded,
 * or obfuscated content — a common technique in supply-chain malware.
 */
import type { Finding } from "./types.js";
/**
 * Calculate Shannon entropy of a string.
 * Returns a value between 0 (uniform) and ~8 (random/encrypted).
 */
export declare function shannonEntropy(data: string): number;
/**
 * Analyze a file's content for high-entropy indicators.
 */
export declare function analyzeEntropy(content: string, relativePath: string): Finding[];
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