import type { AvatarMember } from "./types.js";
export declare const DEFAULT_SIZE = 32;
/** Avatar placeholder service. */
export declare function vercelAvatarUrl(username: string, size: number): string;
export declare function resolveAvatarSrc({ src, username, }: {
    src?: string;
    username?: string;
}, size: number): string | undefined;
/** Keep only the first two uppercase characters, strip emoji/punctuation. */
export declare function normalizeLetter(letter?: string): string | undefined;
export declare function resolveTitle(member: AvatarMember): string | undefined;
export declare function resolveOverlapPx(size: number, overlap: "auto" | number | undefined): number;
/** Decide whether the image branch should render, scoping failures to the source that failed. */
export declare function shouldShowImage(resolvedSrc: string | undefined, erroredSrc: string | undefined): boolean;