// Type definitions for labeled-stream-splicer 2.0
// Project: https://github.com/browserify/labeled-stream-splicer
// Definitions by: Junxiao Shi <https://github.com/yoursunny>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 3.5

/// <reference types="node" />
import * as stream from "stream";

type Stream = NodeJS.ReadableStream|NodeJS.WritableStream|NodeJS.ReadWriteStream;
type Index = number|string;
type LabeledStreamList = ReadonlyArray<string|Stream|ReadonlyArray<Stream>>;

interface splicer extends Omit<stream.Duplex, "push"|"unshift"> {
    readonly length: number;
    splice(index: Index, howMany: number, ...stream: ReadonlyArray<Stream>): Stream[];
    push(...stream: ReadonlyArray<Stream>): number;
    pop(): Stream|undefined;
    unshift(...stream: ReadonlyArray<Stream>): number;
    shift(): Stream|undefined;
    get(index: Index): Stream|undefined;
    indexOf(labelOrStream: string|Stream): number;
}

declare function splicer(streams?: LabeledStreamList, opts?: stream.TransformOptions): splicer;

declare namespace splicer {
    function obj(streams?: LabeledStreamList, opts?: stream.TransformOptions): splicer;
}

export = splicer;