/// <reference types="node" />

/**
 * Object for adjusting options on subset-font output.
 */
interface SubsetFontOptions {
    /**
     * The desired output format. Defaults to the format of the original font.
     */
    targetFormat?: "sfnt" | "woff" | "woff2" | "truetype";
    /**
     * An array of numbers specifying the extra name ids to preserve in the name table. See README for details.
     */
    preserveNameIds?: number[];
}

/**
 * Create a subset font from an existing font in SFNT (TrueType/OpenType), WOFF, or WOFF2 format.
 *
 * @param buffer A buffer containing the original font to subset.
 * @param text A string of characters to subset the original font to.
 * @param options Additional options to configure the subsetter with.
 */
declare function subsetFont(buffer: Buffer, text: string, options?: SubsetFontOptions): Promise<Buffer>;

export = subsetFont;