import type { Metadata, Sharp } from 'sharp';
import { kernelValues } from './transforms/kernel.js';
import { positionValues } from './transforms/position.js';
export interface ProcessedImageMetadata extends ImageMetadata {
    src: string;
    image: Sharp;
}
export interface ImageMetadata extends Metadata {
    allowUpscale?: boolean;
    aspect?: number | undefined;
    backgroundDirective?: string;
    blur?: number | boolean | undefined;
    brightness?: number | '' | undefined;
    fit?: string;
    flip?: true;
    flop?: true;
    flatten?: true;
    hue?: number | '' | undefined;
    invert?: true;
    grayscale?: true;
    kernel?: (typeof kernelValues)[number];
    lossless?: true;
    median?: number;
    normalize?: true;
    pixelDensityDescriptor?: string | undefined;
    position?: (typeof positionValues)[number];
    progressive?: true;
    quality?: number;
    saturation?: number | '' | undefined;
    tint?: string;
    rotate?: number;
    [key: string]: unknown;
}
export type ImageConfig = Record<string, string | string[]>;
export interface Logger {
    info: (msg: string) => void;
    warn: (msg: string) => void;
    error: (msg: string) => void;
}
export interface TransformFactoryContext {
    useParam: (parameter: string) => void;
    manualSearchParams: URLSearchParams;
    logger: Logger;
}
export type TransformFactory<A = Record<string, unknown>> = (metadata: Partial<ImageConfig & A>, ctx: TransformFactoryContext) => ImageTransformation | undefined;
export type TransformOption<A = Record<string, unknown>, T = unknown> = (metadata: Partial<ImageConfig & A>, image: Sharp) => T | undefined;
export type ImageTransformation = (image: Sharp) => Sharp | Promise<Sharp>;
export interface TransformResult {
    image: Sharp;
    metadata: ImageMetadata;
}
/**
 * The JS object returned by the image import.
 */
export type OutputFormat = (args?: string[]) => (metadata: ProcessedImageMetadata[]) => unknown;
/**
 * The img output format.
 */
export interface Img {
    src: string;
    /**
     * The intrinsic width
     */
    w: number;
    /**
     * The intrinsic height. May not be the rendered height.
     * Helps prevent reflow. See https://html.com/attributes/img-height/
     */
    h: number;
    srcset?: string;
}
/**
 * The picture output format.
 */
export interface Picture {
    /**
     * Key is format. Value is srcset.
     */
    sources: Record<string, string>;
    img: {
        src: string;
        w: number;
        h: number;
    };
}