import IOInterface from "./IOInterface";
import GltfIO from ".";
import { AbortSignal } from '@azure/abort-controller';
/**
 * Loader implementation for web usage
 */
export declare class WebImpl implements IOInterface {
    /**
     * Check if a URI starts with 'data:', meaning it's a base-64 encoded data
     * @param uri URI to check
     */
    isDataURI(uri: string): boolean;
    /**
     * Decode a data URI and return the decoded data as an ArrayBuffer, will throw if not a data URI
     * @param uri URI to decode
     */
    decodeDataURI(uri: string): ArrayBuffer;
    /**
     * Get the base directory and filename of a file path
     * @param path File path to resolve
     * @returns [baseDir, filename]
     */
    resolveBaseDir(path: string): string[];
    /**
     * Get the absolute path of a file path relative to a base directory
     * @param path File path to resolve
     * @param baseurl Base directory to resolve from
     */
    resolvePath(path: string, baseurl: string): string;
    /**
     * Decode an ArrayBuffer encoded as UTF-8
     * @param buffer ArrayBuffer to decode
     * @param offset Offset in the ArrayBuffer to start decoding from
     * @param length Length of the ArrayBuffer to decode
     */
    decodeUTF8(buffer: ArrayBuffer, offset?: number, length?: number): string;
    /**
     * Load a resource and return it as a string
     * @param path Path to resource
     * @param abortSignal Abort signal if you want to be able to cancel the request at any time
     */
    loadResource(path: string, abortSignal?: AbortSignal): Promise<string>;
    /**
     * Load a resource and return it as an ArrayBuffer
     * @param path Path to resource
     * @param abortSignal Abort signal if you want to be able to cancel the request at any time
     */
    loadBinaryResource(path: string, abortSignal?: AbortSignal): Promise<ArrayBuffer>;
    /**
     * Load an image from a Uint8Array
     * @param arrayView Uint8Array containing the image data
     * @param mimetype Image mimetype (image/png, image/webp, ...)
     * @param abortSignal Abort signal if you want to be able to cancel the request at any time
     */
    loadImageBuffer(arrayView: Uint8Array, mimetype: string, abortSignal?: AbortSignal): Promise<TexImageSource>;
    /**
     * Load an image from a URI
     * @param uri Image URI
     * @param abortSignal Abort signal if you want to be able to cancel the request at any time
     */
    loadImage(uri: string, abortSignal?: AbortSignal): Promise<TexImageSource>;
    /**
     * Load a Blob as an image ready to be used as a texture
     * @param blob Blob to load
     * @param abortSignal Abort signal if you want to be able to cancel the request at any time
     */
    loadImageBlob(blob: Blob, abortSignal: AbortSignal): Promise<TexImageSource>;
    /**
     * @hidden
     */
    writeResource(path: string, data: string): Promise<boolean>;
    /**
     * @hidden
     */
    writeBinaryResource(path: string, data: ArrayBuffer): Promise<boolean>;
}
export declare const IO: WebImpl;
declare const _instance: GltfIO;
export default _instance;