flexor-apps/postcss-preset-env.d.ts

declare module 'postcss-preset-env' {
    import {
        plugin, Plugin, ParserInput,
        Result, LazyResult, Root, ProcessOptions
    } from 'postcss';

    interface PluginOptions {
        stage?: number;
        features?: any;
        browsers?: string;
        insertBefore?: any;
        insertAfter?: any;
        autoprefixer?: any;
        preserve?: boolean;
        importFrom?: string;
        exportTo?: string;
    }

    const PostcssPresetEnv: Plugin<PluginOptions>;
    export default PostcssPresetEnv;
}