export declare class TokenValidator {
    private readonly serverUrl;
    private readonly cache;
    private cleanupInterval?;
    constructor(serverUrl: string);
    validate(apiToken: string): Promise<boolean>;
    /**
     * Does this token authenticate as a SeaTable *account* token?
     *
     * Only asked after validate() failed, so the extra request is bounded by the
     * failure rate. Used to tell the user they pasted the wrong kind of token.
     */
    looksLikeAccountToken(apiToken: string): Promise<boolean>;
    cleanup(): void;
    destroy(): void;
}
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