/**
 * RefusalDetector — pure, synchronous, 0-LLM non-emergency content-policy refusal.
 *
 * Classifies prescription / specific-dosing / individualized-treatment-plan requests.
 * Conservative phrase matching: accept FALSE-NEGATIVES (fall through to 'none'),
 * NEVER false-positive into giving medical advice. Pattern set is versioned for audit.
 *
 * NO async. NO fs. NO network. NO LLM import. Identical input => identical output.
 */
/** Four mutually-exclusive categories; 'none' means no refusal pattern matched. */
export type RefusalCategory = "prescription" | "specific-dosing" | "individualized-treatment-plan" | "none";
/** Result of a single RefusalDetector.detect() call. */
export interface RefusalMatch {
    category: RefusalCategory;
    /**
     * Rule ID that fired (IDs only — never prompt text).
     * Undefined when category === 'none'.
     */
    ruleId?: string;
}
/** Versioned pattern-set identifier recorded in the audit log. */
export declare const REFUSAL_PATTERNSET_VERSION = "refusal-2026.06.17";
/**
 * Fixed canned reason strings per refusal category.
 * Exported so callers can assert byte-equality (proving non-model-generation).
 */
export declare const REFUSAL_REASONS: Record<Exclude<RefusalCategory, "none">, string>;
/**
 * Detects non-emergency content-policy refusal phrases in a medical prompt.
 *
 * PURE + SYNCHRONOUS. No async, no fs, no network, no LLM import.
 * Identical input => identical RefusalMatch output.
 *
 * bober: conservative phrase matching; novel or indirect phrasing may return
 *        'none' and fall through to normal SOP handling (accepted risk; false-negative
 *        is safer than false-positive into refused advice).
 */
export declare class RefusalDetector {
    readonly patternsetVersion = "refusal-2026.06.17";
    /**
     * Returns the first matching RefusalMatch, or { category: 'none' } if no
     * rule fires. Evaluation order is prescription → specific-dosing → treatment-plan.
     */
    detect(prompt: string): RefusalMatch;
}
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