/**
 * Number formatting helpers used by `<NumberField.Root>` and `<NumberField.Input>`.
 *
 * Mirrors `packages/react/src/utils/formatNumber.ts`. A module-scope cache
 * keyed by `(locale, options)` keeps repeated formats cheap — constructing
 * `Intl.NumberFormat` dominates the cost.
 */
export declare function getFormatter(locale?: Intl.LocalesArgument, options?: Intl.NumberFormatOptions): Intl.NumberFormat;
/**
 * Formats `value` with `Intl.NumberFormat(locale, format)`. Returns the
 * empty string when `value` is `null` or non-finite so the visible `<input>`
 * can clear cleanly.
 */
export declare function formatNumber(value: number | null, locale?: Intl.LocalesArgument, format?: Intl.NumberFormatOptions): string;
/**
 * Like {@link formatNumber} but forces maximum precision (20 fraction
 * digits) when the caller didn't pin an explicit precision. Used for
 * controlled-input display where the consumer's `value` prop must round-trip
 * through the formatter without losing digits.
 */
export declare function formatNumberMaxPrecision(value: number | null, locale?: Intl.LocalesArgument, format?: Intl.NumberFormatOptions): string;
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