export type SqlMigrationConstraintMetadata = {
    addedConstraints: Array<{
        constraintType: string | null;
        location: number;
        name: string | null;
        tableName: string;
    }>;
    foreignKeys: Array<{
        columnNames: string[];
        deleteAction: string | null;
        location: number;
        referencedTableName: string | null;
        tableName: string | null;
    }>;
    validatedConstraints: Set<string>;
};
export type ForeignKey = SqlMigrationConstraintMetadata['foreignKeys'][number];
export declare function fkAttrNames(constraint: Record<string, unknown>): string[];
export declare function foreignKeyFromConstraint(constraint: Record<string, unknown>, tableName: string | null, columnNames: string[], baseOffset?: number): ForeignKey;