import type { AuthorType } from "../types.mts";
export type NormalizedBotUsernames = ReadonlySet<string>;
export declare function normalizeBotUsernames(botUsernames?: readonly string[] | undefined | null): NormalizedBotUsernames;
export declare function normalizeAuthorType(typeName: string | undefined | null, login: string | undefined | null): AuthorType;
export declare function isHumanAuthor(author: {
    author?: string;
    login?: string;
    authorType?: AuthorType;
}): boolean;
export declare function isConfiguredBotAuthor(author: {
    author?: string;
    login?: string;
    authorType?: AuthorType;
}, botUsernames?: NormalizedBotUsernames): boolean;
export declare function isViewerAuthoredHuman(author: {
    author?: string;
    login?: string;
    authorType?: AuthorType;
    viewerDidAuthor?: true;
}, botUsernames?: NormalizedBotUsernames): boolean;