export type GraphModelMigrationBasisFields = {
    readonly graphId: string;
    readonly basisId: string;
};
/** Runtime-backed identity for one migration source or target basis. */
export default class GraphModelMigrationBasis {
    readonly graphId: string;
    readonly basisId: string;
    constructor(fields: GraphModelMigrationBasisFields);
    /** Returns a stable key for equality and map indexing. */
    toKey(): string;
}
