import { EventDecoder, StreamEvent } from './sse-protocol';
/**
 * Server-sent event.
 */
export declare class SSEDecoder implements EventDecoder {
    private event?;
    private data;
    private chunks;
    constructor();
    protected buildServerSentEvent(): StreamEvent<string>;
    decode(line: string): StreamEvent<string> | undefined;
    /**
     * Partitions a string into three parts based on a delimiter.
     * @param str The string to partition.
     * @param delimiter The delimiter to partition the string by.
     * @returns A tuple containing the three parts of the partitioned string.
     * The first part is the string before the delimiter, the second part is the delimiter itself,
     * and the third part is the string after the delimiter.
     * If the delimiter is not found in the string, the first part is the entire string, the second part is an empty string, and the third part is an empty string.
     * @example
     * partition('hello,world', ',') // ['hello', ',', 'world']
     * partition('hello,world', '.') // ['hello,world', '', '']
     * partition('hello,world', 'l') // ['he', 'l', 'lo,world']
     */
    protected partition(str: string, delimiter: string): [string, string, string];
}
//# sourceMappingURL=sse-decoder.d.ts.map