import type { PgTable } from '../query/pg-core/index.js';
import type { PgUpdateSetSource } from '../query/pg-core/query-builders/update.js';
import type { DefinedTable } from '../domain/types.js';
import type { WriteState } from './state.js';
type InsertValues<T extends PgTable> = T extends {
    $inferInsert: infer V;
} ? V : Record<string, any>;
export declare class UpsertBuilder<T extends PgTable, TResult = unknown> implements PromiseLike<TResult> {
    private readonly state;
    constructor(state: WriteState);
    values(rows: InsertValues<T> | ReadonlyArray<InsertValues<T>>): UpsertBuilder<T, TResult>;
    onConflict(columns: readonly (keyof T['$inferSelect'] & string)[]): UpsertBuilder<T, TResult>;
    set(values: PgUpdateSetSource<T>): UpsertBuilder<T, TResult>;
    returning(): UpsertBuilder<T, Record<string, unknown>[]>;
    returning<TShape extends Record<string, unknown>>(shape: TShape): UpsertBuilder<T, Record<string, unknown>[]>;
    then<TFulfilled = TResult, TRejected = never>(onfulfilled?: ((value: TResult) => TFulfilled | PromiseLike<TFulfilled>) | null, onrejected?: ((reason: unknown) => TRejected | PromiseLike<TRejected>) | null): PromiseLike<TFulfilled | TRejected>;
}
/** Starts a pipework-owned upsert against `table`. Chain with `.values(...).onConflict([...]).set(...).returning(...)`. */
export declare function upsert<T extends DefinedTable<any> & PgTable>(table: T): UpsertBuilder<T, any>;
export {};
//# sourceMappingURL=upsert.d.ts.map