import type { Font } from 'opentype.js';
export type FontBaseTool = ReturnType<typeof createFontBaseTool>;
export declare const createFontBaseTool: (buffer: ArrayBuffer) => {
    tableEntries: Map<string, {
        tag: string;
        checksum: number;
        offset: number;
        length: number;
        compression: string | boolean;
    }> | Map<string, {
        tag: string;
        compressedLength?: number | undefined;
        offset: number;
        length: number;
        compression: string | boolean;
    }>;
    data: DataView;
    font: Font;
    getTable(parser: {
        parse: Function;
    }, name: string, ...args: unknown[]): any;
};
/** 访问文件中的 feature 信息 */
export declare const getFeatureQueryFromBuffer: (tool: FontBaseTool) => {
    getFeature(i: string): {
        sub: number | number[];
        by: number | number[];
    }[];
};
/** 从字体中读取 name table */
export declare const getNameTableFromTool: (tool: FontBaseTool) => any;
export declare const getCMapFromTool: (tool: FontBaseTool) => any;
/** 获取字体的 glyphID -> unicode[] 映射表 */
export declare function getGlyphIDToUnicodeMap(tool: FontBaseTool): Map<number, number[]>;