import type * as mariadb from 'mariadb';
import type { LeafColumn, Table } from '../../schema.js';
import { StatementKind } from '../kind.js';
export type LeafColumnNormalizer = (expr: string) => string;
export declare const nullIfEmptyString: (expr: string) => string;
export declare const trimWhitespaces: (expr: string) => string;
export declare const normalizeWhitespaces: (expr: string) => string;
export declare const sanitize: (expr: string, extras?: ReadonlyArray<string>) => string;
export declare const slugify: (expr: string) => string;
export declare const normalizeJSONArray: (expr: string, isNullable: boolean) => string;
export declare const normalizeJSONObject: (expr: string, isNullable: boolean) => string;
export declare const normalizeDraftJS: (expr: string, isNullable: boolean) => string;
export declare const normalize: (expr: string, normalizers: ReadonlyArray<LeafColumnNormalizer>) => string;
export interface NormalizeStatementConfig {
    /**
     * @see https://mariadb.com/kb/en/ignore/
     */
    ignore?: boolean;
    customize?: (args: {
        column: LeafColumn;
        columnIdentifier: string;
        defaultNormalization: string | undefined;
    }) => string | undefined;
    /**
     * Update only a subset of the table
     */
    where?: string;
}
/**
 * @see https://mariadb.com/kb/en/update/
 */
export declare class NormalizeStatement implements mariadb.QueryOptions {
    readonly table: Table;
    readonly kind = StatementKind.DATA_MANIPULATION;
    readonly sql: string;
    static normalizations(table: Table, config?: NormalizeStatementConfig): Map<LeafColumn, string>;
    constructor(table: Table, config?: NormalizeStatementConfig);
}
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