import type * as Corti from "../../api/index.js";
/** Shared scope string for token requests (openid + optional scopes, deduped). */
export declare function buildScopeString(scopes?: string[]): string;
export type TokenRequestClientCredentials = {
    clientId: string;
    clientSecret: string;
    scopes?: string[];
};
export type TokenRequestRopc = {
    clientId: string;
    username: string;
    password: string;
    scopes?: string[];
};
export type TokenRequestRefresh = {
    clientId: string;
    refreshToken: string;
    clientSecret?: string;
    scopes?: string[];
};
export type TokenRequestAuthorizationCode = {
    clientId: string;
    clientSecret: string;
    redirectUri: string;
    code: string;
    scopes?: string[];
};
export type TokenRequestPkce = {
    clientId: string;
    redirectUri: string;
    code: string;
    codeVerifier: string;
    scopes?: string[];
};
export declare function buildTokenRequestBody(request: TokenRequestClientCredentials | TokenRequestRopc | TokenRequestRefresh | TokenRequestAuthorizationCode | TokenRequestPkce): Corti.AuthTokenRequestClientCredentials | Corti.AuthTokenRequestRopc | Corti.AuthTokenRequestRefresh | Corti.AuthTokenRequestAuthorizationCode | Corti.AuthTokenRequestAuthorizationPkce;