export declare const ARKME_EXTENSION_AVATAR_SOURCE_MAX_BYTES: number;
export declare const ARKME_EXTENSION_AVATAR_OUTPUT_MAX_BYTES: number;
export interface ExtensionAvatarCropGeometryInput {
    imageWidth: number;
    imageHeight: number;
    viewportSize: number;
    zoom: number;
    panX: number;
    panY: number;
}
export interface ExtensionAvatarCropGeometry {
    scale: number;
    renderedWidth: number;
    renderedHeight: number;
    displayLeft: number;
    displayTop: number;
    panX: number;
    panY: number;
    sourceX: number;
    sourceY: number;
    sourceSize: number;
}
export interface ExtensionAvatarEncodingCandidate {
    mediaType: 'image/webp' | 'image/jpeg';
    quality: number;
    dimension: number;
}
export interface ExtensionAvatarEncodingResult extends ExtensionAvatarEncodingCandidate {
    blob: Blob;
}
export declare function extensionAvatarSourceError(file: Pick<File, 'type' | 'size'>): string | undefined;
export declare function extensionAvatarCropGeometry(input: ExtensionAvatarCropGeometryInput): ExtensionAvatarCropGeometry;
export declare function chooseExtensionAvatarEncoding(encode: (candidate: ExtensionAvatarEncodingCandidate) => Promise<Blob | null>): Promise<ExtensionAvatarEncodingResult>;
export declare function normalizeExtensionAvatar(image: HTMLImageElement, geometry: Pick<ExtensionAvatarCropGeometry, 'sourceX' | 'sourceY' | 'sourceSize'>): Promise<File>;
//# sourceMappingURL=extension-avatar-crop.d.ts.map