import { Knex } from "knex";
interface TableSchema {
    columns: Record<string, Knex.ColumnInfo>;
    constraints: Constraint[];
    indexes: Index[];
}
interface Constraint {
    name: string;
    type: ConstraintType;
    definition: string;
}
declare enum ConstraintType {
    Check = "CHECK",
    Exclusion = "EXCLUSION",
    Foreign = "FOREIGN",
    Primary = "PRIMARY",
    Trigger = "TRIGGER",
    Unique = "UNIQUE"
}
interface Index {
    name: string;
    definition: string;
}
export declare class KnexClient {
    knex: Knex;
    constructor(config: Knex.Config);
    getTableNames(): Promise<Set<string>>;
    getSchema(): Promise<Record<string, TableSchema>>;
    destroy(): Promise<void>;
    count(tableName: string): Promise<number>;
    private getColumnInfo;
    private getConstraints;
    private getIndexes;
    private parseConstraintType;
}
export {};
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