import { DataSource } from 'typeorm';
import { DatabaseDialect, TableInfo, DatabaseSchema } from '../types/database.types';
export declare abstract class BaseSchemaIntrospector {
    protected readonly dataSource: DataSource;
    constructor(dataSource: DataSource);
    abstract getDialect(): DatabaseDialect;
    abstract getAllTables(): Promise<TableInfo[]>;
    abstract getTableInfo(tableName: string, schema?: string): Promise<TableInfo>;
    getDatabaseSchema(): Promise<DatabaseSchema>;
}
export declare class PostgresSchemaIntrospector extends BaseSchemaIntrospector {
    getDialect(): DatabaseDialect;
    getAllTables(): Promise<TableInfo[]>;
    getTableInfo(tableName: string, schema?: string): Promise<TableInfo>;
    private getColumns;
    private getEnumValues;
    private getPrimaryKeys;
    private getForeignKeys;
    private getIndexes;
}
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