import { SqlResult } from '../models/SqlResult';
/** Case-insensitive raw value. absent → undefined; present-null → null. */
export declare function getValue(row: Record<string, unknown>, column: string): unknown;
/** String coercion. null/undefined pass through; else String(v). */
export declare function getString(row: Record<string, unknown>, column: string): string | null | undefined;
/** Number coercion (pg/mysql decimal-as-string → number). null/undefined pass through; else Number(v). */
export declare function getNumber(row: Record<string, unknown>, column: string): number | null | undefined;
/**
 * Boolean coercion normalizing engine representations.
 * null/undefined pass through. boolean → as-is. number → v !== 0.
 * string (case-insensitive): true/false sets above; any other non-empty string → ResultError.
 */
export declare function getBoolean(row: Record<string, unknown>, column: string): boolean | null | undefined;
/** Values of `column` across every row (via getValue). */
export declare function getColumn(rows: Record<string, unknown>[], column: string): unknown[];
/** A predicate over a raw row record. */
export type RowPredicate = (row: Record<string, unknown>) => boolean;
/** First row matching `where` (matcher-aware partial or a raw-row predicate). */
export declare function findRow<T extends object>(rows: T[], where: Record<string, unknown> | RowPredicate): T | undefined;
/** All rows matching `where` (matcher-aware partial or a raw-row predicate). */
export declare function filterRows<T extends object>(rows: T[], where: Record<string, unknown> | RowPredicate): T[];
/** Value of the first row's `column` (named, or the first field when omitted). undefined if no rows. */
export declare function getScalar<T extends object>(result: SqlResult<T>, column?: string): unknown;