/**
 * Decodes SDK tokens with embedded encoded data.
 */
export default class SdkTokenDecoder {
    private readonly sdkKey;
    private readonly decodedParams;
    constructor(sdkKey: string);
    private getDecodedValue;
    getEventIngestionHostname(): string | null;
    getSubdomain(): string | null;
    /**
     * Gets the raw SDK Key.
     */
    getToken(): string;
    /**
     * Checks if the SDK Key had the subdomain or event hostname encoded.
     */
    isValid(): boolean;
}
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