import type { CompletionRequest } from '../types/messages.js';
import type { InjectionDetectionConfig, SecurityFinding } from '../types/security.js';
/** Finds prompt-injection attempts by pattern. */
export declare class InjectionDetector {
    /** Finds injection attempts in a request's messages. */
    detect(request: CompletionRequest, config?: InjectionDetectionConfig): SecurityFinding[];
    /** Returns the request with injection markers defused. */
    neutralize(request: CompletionRequest): CompletionRequest;
    private extractText;
    private escapeInstructionLikeText;
}