import * as dntShim from "../../../../../_dnt.shims.js";
/** Disposition of the delimiter for {@linkcode DelimiterStreamOptions}. */
export type DelimiterDisposition = 
/** Include delimiter in the found chunk. */
"suffix"
/** Include delimiter in the subsequent chunk. */
 | "prefix"
/** Discard the delimiter. */
 | "discard";
/** Options for {@linkcode DelimiterStream}. */
export interface DelimiterStreamOptions {
    /**
     * Disposition of the delimiter.
     *
     * @default {"discard"}
     */
    disposition?: DelimiterDisposition;
}
/**
 * Divide a stream into chunks delimited by a given byte sequence.
 *
 * If you are working with a stream of `string`, consider using {@linkcode TextDelimiterStream}.
 *
 * @example
 * Divide a CSV stream by commas, discarding the commas:
 * ```ts
 * import { DelimiterStream } from "@std/streams/delimiter-stream";
 * import { assertEquals } from "@std/assert";
 *
 * const inputStream = ReadableStream.from(["foo,bar", ",baz"]);
 *
 * const transformed = inputStream.pipeThrough(new TextEncoderStream())
 *   .pipeThrough(new DelimiterStream(new TextEncoder().encode(",")))
 *   .pipeThrough(new TextDecoderStream());
 *
 * assertEquals(await Array.fromAsync(transformed), ["foo", "bar", "baz"]);
 * ```
 *
 * @example
 * Divide a stream after semi-colons, keeping the semicolons in the output:
 * ```ts
 * import { DelimiterStream } from "@std/streams/delimiter-stream";
 * import { assertEquals } from "@std/assert";
 *
 * const inputStream = ReadableStream.from(["foo;", "bar;baz", ";"]);
 *
 * const transformed = inputStream.pipeThrough(new TextEncoderStream())
 *   .pipeThrough(
 *     new DelimiterStream(new TextEncoder().encode(";"), {
 *       disposition: "suffix",
 *     }),
 *   ).pipeThrough(new TextDecoderStream());
 *
 * assertEquals(await Array.fromAsync(transformed), ["foo;", "bar;", "baz;"]);
 * ```
 */
export declare class DelimiterStream extends dntShim.TransformStream<Uint8Array, Uint8Array> {
    #private;
    /**
     * Constructs a new instance.
     *
     * @param delimiter A delimiter to split the stream by.
     * @param options Options for the delimiter stream.
     */
    constructor(delimiter: Uint8Array, options?: DelimiterStreamOptions);
}
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