import { AclRole } from '../entities/AclRole.js';
/** `none, freeBusyReader, reader, ...`: the bare vocabulary, in order. */
export declare function listRoles(roles?: readonly AclRole[]): string;
/** `none (no access), freeBusyReader (free/busy only), ...`: each role glossed. */
export declare function describeRoles(roles?: readonly AclRole[]): string;
/**
 * The roles that can appear as an effective `accessRole` on a calendar you can
 * already see. `none` cannot: a calendar on your list grants at least
 * free/busy.
 */
export declare const EFFECTIVE_ROLES: readonly AclRole[];
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