import { type WorkflowContext, type WorkflowResult } from './types.js';
export interface SignPermitInput {
    chainId: number;
    token: string;
    spender: string;
    value: string;
    deadline: number;
    domain: Record<string, unknown>;
    types: Record<string, unknown>;
    message: Record<string, unknown>;
}
/**
 * EIP-2612 permit signing workflow.
 *
 * Security validations:
 * 1. Canonical EIP-2612 types.Permit field check
 * 2. Message field presence (value, spender, deadline)
 * 3. Payload/metadata consistency (message vs top-level args)
 * 4. Domain validation (verifyingContract, chainId)
 */
export declare function signPermit(ctx: WorkflowContext, input: SignPermitInput): Promise<WorkflowResult>;