import type { IContainerRuntimePort } from '../ports/outbound/IContainerRuntimePort.js';
import type { IWorldAssignmentPort } from '../ports/outbound/IWorldAssignmentPort.js';
import { WorldAssignmentError, type WorldAssignmentSnapshot } from '../../domain/services/worldAssignment.js';
/**
 * Refuse a world assignment change on a server that is not stopped (#670).
 * Nothing is stopped automatically. 'not_found' also means "runtime
 * unreachable" (D1), so it passes only when a strict list succeeds (#734). A
 * throw (or no runtime) is undetermined, and so is a name no server can have
 * (ServerName.fromExisting rejects it).
 */
export declare function checkServerStopped(runtime: IContainerRuntimePort | undefined, server: string): WorldAssignmentError | null;
/**
 * Why the proposed snapshot `next` may not replace the current assignments,
 * or null (#670). Only servers whose assignment changes (world, location, or
 * readable/undetermined) are checked: each must pass checkProposed (R1, R7)
 * and every one of them must be stopped (the error lists the running ones).
 */
export declare function checkSnapshotChange(assignments: IWorldAssignmentPort, runtime: IContainerRuntimePort | undefined, next: WorldAssignmentSnapshot): Promise<WorldAssignmentError | null>;
/** Why `server`'s config.env may not become `configEnv`, or null (#670). */
export declare function checkConfigEnvChange(assignments: IWorldAssignmentPort | undefined, runtime: IContainerRuntimePort | undefined, server: string, configEnv: string): Promise<WorldAssignmentError | null>;
/** Why the platform .env may not become `dotenv` (inherited EXTRA_ARGS), or null (#670). */
export declare function checkPlatformEnvChange(assignments: IWorldAssignmentPort | undefined, runtime: IContainerRuntimePort | undefined, dotenv: string): Promise<WorldAssignmentError | null>;
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