import { bus } from '../bus';
export declare const ActionType = "ADD_COLUMN";
declare type ActionType = typeof ActionType;
export declare type Action = {
    type: ActionType;
    tableName: string;
    columnName: string;
    dataType: Exclude<bus.COLUMN, 'uuid' | 'serial'>;
    data: bus.ColumnInput;
};
export declare const reducer: (schema: bus.Schema, action: bus.ducks.addColumn.Action) => bus.Schema;
export {};