import { z } from 'zod';
export declare const StanceSchema: z.ZodEnum<{
    supports: "supports";
    opposes: "opposes";
    uncertain: "uncertain";
    blocks: "blocks";
}>;
export type Stance = z.infer<typeof StanceSchema>;
export declare const SignalSchema: z.ZodObject<{
    issue: z.ZodString;
    stance: z.ZodEnum<{
        supports: "supports";
        opposes: "opposes";
        uncertain: "uncertain";
        blocks: "blocks";
    }>;
    confidence: z.ZodNumber;
    evidence: z.ZodArray<z.ZodString>;
    claim: z.ZodString;
}, z.core.$strip>;
export type Signal = z.infer<typeof SignalSchema>;
export declare const SignalBlockSchema: z.ZodObject<{
    signal: z.ZodObject<{
        issue: z.ZodString;
        stance: z.ZodEnum<{
            supports: "supports";
            opposes: "opposes";
            uncertain: "uncertain";
            blocks: "blocks";
        }>;
        confidence: z.ZodNumber;
        evidence: z.ZodArray<z.ZodString>;
        claim: z.ZodString;
    }, z.core.$strip>;
}, z.core.$loose>;
export type SignalBlock = z.infer<typeof SignalBlockSchema>;
export type ParseSignalResult = {
    ok: true;
    signal: Signal;
} | {
    ok: false;
    reason: 'absent' | 'malformed';
};
export declare function extractSignalBlock(content: string): unknown;
export declare function parseSignal(content: string): ParseSignalResult;