/**
 *
 * @param sql SQL string with named placeholders
 * @param params Object of placeholder keys with values at the correct locations
 * @returns return an object ```{sql: sql string with mysql placeholders, parameters: array of values at the correct locations}```
 */
export declare const toNamedPlaceholders: (sql: string, params: {
    [key: string]: any;
}) => {
    sql: string;
    parameters: any[];
};