export type MigrationInput = {
    schemaVersion: 1;
    executionId: string;
    exportId: string;
    ports: {
        name: string;
        binding: string;
        view: "old" | "new";
        access: ("read" | "write" | "create" | "edge")[];
        atomId?: string;
        attachedAtomId?: string;
        defaultValue?: unknown;
        states?: {
            objectId: string;
            value: unknown;
        }[];
        edges?: MigrationEdge[];
    }[];
};
export type MigrationEdge = {
    id: string;
    edgeTypeId: string;
    firstObjectId: string;
    secondObjectId: string;
    firstProjectionId: string;
    secondProjectionId: string;
    firstOrdinal?: number;
    secondOrdinal?: number;
    firstKeyJson?: string;
    secondKeyJson?: string;
};
export type MigrationOutput = {
    schemaVersion: 1;
    executionId: string;
    writes: {
        port: string;
        objectId: string;
        value: unknown;
    }[];
    creates: {
        port: string;
        logicalKey: string;
        objectId: string;
    }[];
    edgeReplacements: {
        port: string;
        edges: MigrationEdge[];
    }[];
};
export type MigrationContext = {
    enumerate(port: string): {
        objectId: string;
        value: unknown;
    }[];
    read(port: string, objectId: string): unknown;
    write(port: string, objectId: string, value: unknown): void;
    create(port: string, logicalKey: string): string;
    edges(port: string): MigrationEdge[];
    replaceEdges(port: string, edges: MigrationEdge[]): void;
};
export declare const migrationObjectId: (executionId: string, port: string, logicalKey: string) => string;
/** No ordinary RuntimeContext or network/database clients are supplied here.
 * Process isolation belongs to the host, not this convenience API. */
export declare const createMigrationContext: (input: MigrationInput) => {
    context: MigrationContext;
    result: () => MigrationOutput;
};
/** Entrypoint for an immutable package's dedicated bin/migrate executable.
 * stdout is protocol-only; send diagnostics to stderr. The host independently
 * validates every write, helper identity, contract, and completion receipt. */
export declare const serveMigration: (exports: Record<string, (context: MigrationContext) => void | Promise<void>>) => Promise<void>;
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