import { PathSeg } from './content.js';
/** A reader for one font program's outlines, with its tables located once. */
export interface OutlineSource {
    /** The glyph's contours in a one-unit em, or `undefined` for an empty one. */
    readonly path: (gid: number) => Array<PathSeg> | undefined;
    /**
     * How many glyphs the program holds. A glyph INSIDE that count which draws
     * nothing is a blank one — a space — and not a glyph the program lacks.
     */
    readonly count: number;
    /**
     * Whether an sfnt program carries a `cmap` at all. Without one there is no
     * way to reach a glyph by character (§9.6.6.4), which says what the file
     * means by its codes: they are glyph INDICES. Absent for a bare CFF, which
     * has no such table and is addressed by NAME through its charset.
     */
    readonly cmap?: boolean;
}
/**
 * Prepare an embedded TrueType program for outline reading (§9.6.6).
 *
 * @param program The raw `/FontFile2` bytes.
 * @returns A reader, or `undefined` where the program carries no `glyf`/`loca`
 *          pair — an OpenType/CFF program under `/FontFile2` is one such, and
 *          its outlines are charstrings this does not read.
 */
export declare function outlineSource(program: Uint8Array): OutlineSource | undefined;
/**
 * §post format 2.0 — the NAME each glyph of a TrueType program goes by.
 *
 * A legacy eight-bit font is reached through this table and nothing else. Its
 * program carries no `cmap`, so a code cannot be turned into a character and
 * then into a glyph; what it can be turned into is a glyph NAME, through the
 * encoding the font dictionary states (Annex D.2) — and the name is looked up
 * here. TrueType_without_cmap.pdf is an Armenian face, Masis, whose `i` draws
 * ի: read as text its line came back "'>in", and drawn by name it is the line
 * the page shows.
 *
 * @param program The raw `/FontFile2` bytes.
 * @returns Glyph name → index, or `undefined` where the table is missing or
 *          states no names of its own (formats 1.0 and 3.0).
 */
export declare function postGlyphNames(program: Uint8Array): Map<string, number> | undefined;