import { Document, ILogger, Texture } from '@gltf-transform/core';
import { NEEDLE_compression_texture_schema } from '../extensions/index.js';
import { INeedleTextureTransformContext, NeedleTransformContext } from './needle_common.js';
import sharp from 'sharp';
export interface NeedleWebPOptions {
}
export declare class NeedleWebPContext implements INeedleTextureTransformContext {
    options: NeedleWebPOptions;
    logger: ILogger;
    private compressed;
    constructor(options: NeedleWebPOptions);
    prepare(document: Document): Promise<void>;
    process(index: number, texture: Texture, settings: Pick<NEEDLE_compression_texture_schema, "quality" | "slot"> & Partial<sharp.WebpOptions>, context: NeedleTransformContext): Promise<boolean>;
    finalize(document: Document): Promise<void>;
}