/**
 * Hermes-compatible strict threat scan for memory writes.
 * Port of tools/threat_patterns.py — scope "strict" (union of all/context/strict).
 */
export declare const MAX_SCAN_CHARS = 65536;
type Scope = "all" | "context" | "strict";
/** Invisible / bidi unicode used in injection attacks (Hermes INVISIBLE_CHARS). */
export declare const INVISIBLE_CHARS: Set<string>;
/**
 * Return matched pattern IDs (and invisible_unicode_U+XXXX) for `content`.
 */
export declare function scanForThreats(content: string, scope?: Scope): string[];
/**
 * First human-readable block message for memory writes (Hermes strict).
 * Returns null when clean.
 */
export declare function firstThreatMessage(content: string, scope?: Scope): string | null;
/** Memory-write scan: Hermes `_scan_memory_content`. */
export declare function scanMemoryContent(content: string): string | null;
export {};
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