import type { PaletteProps } from "../types";
/** A field always renders on at least one surface — the first is the reference backdrop. */
export type FieldSurfaces = readonly [string, ...string[]];
export declare const placeholderInkOn: (palette: PaletteProps, surfaces: FieldSurfaces) => string;
export declare const fieldSurfaces: (palette: PaletteProps) => FieldSurfaces;
/** The hint ink every field in this library reads. Takes no backdrop: see `fieldSurfaces`. */
export declare const placeholderInk: (palette: PaletteProps) => string;