DefinitelyTyped/types/gulp-imagemin/index.d.ts

// Type definitions for gulp-imagemin 4.1
// Project: https://github.com/sindresorhus/gulp-imagemin#readme
// Definitions by: Romain Faust <https://github.com/romain-faust>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 2.2

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

import { Plugin } from 'imagemin';
import { Options as GifsicleOptions } from 'imagemin-gifsicle';
import { Options as JpegtranOptions } from 'imagemin-jpegtran';
import { Options as OptipngOptions } from 'imagemin-optipng';
import { Options as SvgoOptions } from 'imagemin-svgo';
import { Transform } from 'stream';

declare function imagemin(pluginsOrOptions?: ReadonlyArray<Plugin> | imagemin.Options): Transform;
declare function imagemin(plugins?: ReadonlyArray<Plugin>, options?: imagemin.Options): Transform;

declare namespace imagemin {
    interface Options {
        verbose?: boolean;
    }

    type PluginFactory<T> = (options?: T) => Plugin;

    const gifsicle: PluginFactory<GifsicleOptions>;
    const jpegtran: PluginFactory<JpegtranOptions>;
    const optipng: PluginFactory<OptipngOptions>;
    const svgo: PluginFactory<SvgoOptions>;
}

export = imagemin;