declare type ImageFormat = 'bmp' | 'gif' | 'jpeg' | 'png' | 'tiff' | 'default';
declare type IconPlatform = 'ios' | 'iphone' | 'ipad' | 'watchos' | 'watch' | 'macos' | 'mac' | 'web';
declare type GeneratorType = 'icon' | 'image' | 'iconset' | 'imageset';
interface GeneratorOption {
    type: GeneratorType;
    platform: IconPlatform;
    width?: number;
    height?: number;
    format?: ImageFormat;
}
interface ResizeOption {
    width: number;
    height: number;
    filename?: string;
    format?: ImageFormat;
}
/**
 * Generator class for iconset/imageset.
 */
declare class IconGenerator {
    /**
     * Constructs an IconGenerator object.
     */
    constructor();
    /**
     * Generates .appiconset with a given image. Image must be larger than 1024x1024.
     * @param inputPath     path of input image
     * @param outputPath    path of output app icon
     * @param platform      platform of app icon (ios | watchos | macos)
     */
    generateIconSet(inputPath: string, outputPath: string, platform?: IconPlatform): Promise<void>;
    /**
     * Generates .imageset with a given image.
     * Parameters width and height are for generated @1x image. If both weight and
     * height are given, the image will be resized to exactly weight and height. If
     * one of width and height is given, it will automatically choose the other
     * dimension for the resized images. If none of them is given, the original image
     * is used as @3x.
     * @param inputPath     path of input image
     * @param outputPath    path of output image set
     * @param width         @1x width of the output image
     * @param height        @1x height of the output image
     */
    generateImageSet(inputPath: string, outputPath: string, width?: number, height?: number): Promise<void>;
    /**
     * Generates .appiconset or .imageset or favicon with a given image.
     * @param inputPath         path of input image
     * @param outputPath        path of output images
     * @param generatorOption  options for image generator
     */
    generateImageAssets(inputPath: string, outputPath: string, generatorOption?: GeneratorOption): Promise<void>;
    /**
     * Generate web manifest icon images.
     * @param inputPath    path of input image.
     * @param outputPath   path of output image.
     */
    generateWebIconImages(inputPath: string, outputPath: string): Promise<void>;
    /**
     * Generate resized images with generic options.
     * @param inputPath   path of input image.
     * @param outputPath  path of output image.
     * @param options     generic options for resizing images.
     */
    generateImages(inputPath: string, outputPath: string, options: Array<ResizeOption>): Promise<void>;
    private createDirectoryIfNeeded;
}
export { GeneratorOption, GeneratorType, IconGenerator, IconPlatform, ImageFormat, ResizeOption, };