import { type Font } from './font.ts';
import { CmapTableBuilder } from './tables/cmap.ts';
export type SubsetOptions = {
    /**
     * Whether font hinting instructions should be preserved.
     * Default is false, meaning hinting instructions will be removed to
     * reduce font size.
     */
    keepHinting: boolean;
};
/**
 * The result of subsetting a font.
 */
export type SubsetResult = {
    /** The subset font data. */
    fontData: Uint8Array;
    /** Maps original glyph IDs to their new IDs in the subset font. */
    glyphIdMapping: ReadonlyMap<number, number>;
};
/**
 * Creates a subset of the given font containing only the specified glyphs.
 *
 * The resulting font will include glyph ID 0 (.notdef) automatically, plus
 * all glyphs referenced by composite glyphs in the subset.
 *
 * @param font The font to subset
 * @param glyphIds The glyph IDs to include in the subset
 */
export declare function createSubset(font: Font, glyphIds: number[], options?: SubsetOptions): SubsetResult;
/**
 * Creates a subset cmap table containing only the specified mappings.
 */
export declare function subsetCmapTable(codePointToGlyphId: Map<number, number>): CmapTableBuilder;