/// <reference types="node" />
import { Style } from "../types/Metadata";
import { SubsetOptions } from "../types/SubsetOptions";
import { ProviderOptions } from "../types/ProviderOptions";
export declare const renderEnv: any;
export declare const getFontWeight: (style: Style) => number | string;
export declare const createHash: (blob: string | Buffer) => string;
export declare const validateOptionNumber: (options: any, option: string, allowUndefined: boolean) => void;
declare type ValidateOptions = (options: SubsetOptions | ProviderOptions) => void;
export declare const validateOptions: ValidateOptions;
export {};