import { type Assumption, type AssumptionLedger } from '@manehorizons/cadence-types';
import { type SubjectLedgerSpec } from './ledger.js';
export declare const assumptionLedgerSpec: SubjectLedgerSpec<Assumption, AssumptionLedger, Assumption['status']>;
export declare function readAssumptionLedger(root: string): Promise<AssumptionLedger>;
export declare function writeAssumptionLedger(root: string, ledger: AssumptionLedger): Promise<void>;
export type AddAssumptionInput = {
    recommendationId: string;
    text: string;
};
export declare function addAssumption(root: string, input: AddAssumptionInput): Promise<Assumption>;
export type AssumptionTransitionAction = 'validate' | 'reject' | 'reopen';
export type AssumptionTransitionResult = {
    ok: true;
    ledger: AssumptionLedger;
} | {
    ok: false;
    error: string;
};
export declare function applyAssumptionTransition(ledger: AssumptionLedger, id: string, action: AssumptionTransitionAction, _now?: Date): AssumptionTransitionResult;
export declare function runAssumptionTransition(root: string, id: string, action: AssumptionTransitionAction): Promise<AssumptionTransitionResult>;
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