/**
 * Converts a value to a decimal. If the value cannot be converted to a decimal, $toDecimal errors.
 * If the value is null or missing, $toDecimal returns null.
 * This is just an alias for `$toDouble` in this library.
 */
export declare const $toDecimal: (obj: import("../../../types").AnyObject, expr: import("../../../types").Any, options: import("../../../types").Options) => number | null;