Compare commits
8 Commits
Author | SHA1 | Date | |
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a490f521ab | |||
59027782dc | |||
8c7dd7970c | |||
22d18dc21f | |||
1cb6f727af | |||
824c44d165 | |||
3e062103f8 | |||
6451e93c12 |
@ -1,6 +1,6 @@
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{
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{
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"name": "@push.rocks/smartstream",
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"name": "@push.rocks/smartstream",
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"version": "3.0.39",
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"version": "3.0.43",
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"private": false,
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"private": false,
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"description": "A library to simplify the creation and manipulation of Node.js streams, providing utilities for handling transform, duplex, and readable/writable streams effectively in TypeScript.",
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"description": "A library to simplify the creation and manipulation of Node.js streams, providing utilities for handling transform, duplex, and readable/writable streams effectively in TypeScript.",
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"type": "module",
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"type": "module",
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@ -3,6 +3,6 @@
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*/
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*/
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export const commitinfo = {
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export const commitinfo = {
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name: '@push.rocks/smartstream',
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name: '@push.rocks/smartstream',
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version: '3.0.39',
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version: '3.0.43',
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description: 'A library to simplify the creation and manipulation of Node.js streams, providing utilities for handling transform, duplex, and readable/writable streams effectively in TypeScript.'
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description: 'A library to simplify the creation and manipulation of Node.js streams, providing utilities for handling transform, duplex, and readable/writable streams effectively in TypeScript.'
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}
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}
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@ -157,4 +157,53 @@ export class SmartDuplex<TInput = any, TOutput = any> extends Duplex {
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this.backpressuredArray.push(null);
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this.backpressuredArray.push(null);
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callback();
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callback();
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}
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}
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public async getWebStreams(): Promise<{ readable: ReadableStream, writable: WritableStream }> {
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const duplex = this;
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const readable = new ReadableStream({
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start(controller) {
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duplex.on('readable', () => {
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let chunk;
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while (null !== (chunk = duplex.read())) {
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controller.enqueue(chunk);
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}
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});
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duplex.on('end', () => {
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controller.close();
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});
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},
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cancel(reason) {
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duplex.destroy(new Error(reason));
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}
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});
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const writable = new WritableStream({
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write(chunk) {
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return new Promise<void>((resolve, reject) => {
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const isBackpressured = !duplex.write(chunk, (error) => {
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if (error) {
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reject(error);
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} else {
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resolve();
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}
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});
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if (isBackpressured) {
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duplex.once('drain', resolve);
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}
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});
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},
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close() {
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return new Promise<void>((resolve, reject) => {
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duplex.end(resolve);
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});
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},
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abort(reason) {
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duplex.destroy(new Error(reason));
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}
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});
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return { readable, writable };
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}
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}
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}
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@ -1,6 +1,45 @@
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import * as plugins from './smartstream.plugins.js';
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import * as plugins from './smartstream.plugins.js';
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export class StreamIntake<T> extends plugins.stream.Readable {
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export class StreamIntake<T> extends plugins.stream.Readable {
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// STATIC
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public static async fromStream<U>(inputStream: plugins.stream.Readable | ReadableStream, options?: plugins.stream.ReadableOptions): StreamIntake<U> {
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const intakeStream = new StreamIntake<U>(options);
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if (inputStream instanceof plugins.stream.Readable) {
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inputStream.on('data', (chunk: U) => {
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intakeStream.pushData(chunk);
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});
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inputStream.on('end', () => {
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intakeStream.signalEnd();
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});
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inputStream.on('error', (err: Error) => {
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intakeStream.destroy(err);
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});
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} else {
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const reader = (inputStream as ReadableStream).getReader();
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const readChunk = () => {
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reader.read().then(({ done, value }) => {
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if (done) {
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intakeStream.signalEnd();
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} else {
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intakeStream.pushData(value);
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readChunk();
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}
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}).catch((err) => {
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intakeStream.destroy(err);
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});
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};
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readChunk();
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}
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return intakeStream;
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}
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// INSTANCE
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private signalEndBoolean = false;
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private signalEndBoolean = false;
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private chunkStore: T[] = [];
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private chunkStore: T[] = [];
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public pushNextObservable = new plugins.smartrx.ObservableIntake<any>();
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public pushNextObservable = new plugins.smartrx.ObservableIntake<any>();
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@ -3,6 +3,6 @@
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*/
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*/
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export const commitinfo = {
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export const commitinfo = {
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name: '@push.rocks/smartstream',
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name: '@push.rocks/smartstream',
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version: '3.0.39',
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version: '3.0.43',
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description: 'A library to simplify the creation and manipulation of Node.js streams, providing utilities for handling transform, duplex, and readable/writable streams effectively in TypeScript.'
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description: 'A library to simplify the creation and manipulation of Node.js streams, providing utilities for handling transform, duplex, and readable/writable streams effectively in TypeScript.'
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}
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}
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@ -1,64 +0,0 @@
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export interface IDuplexStream {
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read(): any;
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write(chunk: any, callback?: (error?: Error | null) => void): boolean;
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on(event: string, listener: (...args: any[]) => void): this;
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once(event: string, listener: (...args: any[]) => void): this;
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end(callback?: () => void): void;
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destroy(error?: Error): void;
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}
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export interface IReadableStreamOptions {
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highWaterMark?: number;
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}
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export interface IWritableStreamOptions {
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highWaterMark?: number;
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}
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export function convertDuplexToWebStream(duplex: IDuplexStream): { readable: ReadableStream, writable: WritableStream } {
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const readable = new ReadableStream({
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start(controller) {
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duplex.on('readable', () => {
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let chunk;
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while (null !== (chunk = duplex.read())) {
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controller.enqueue(chunk);
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}
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});
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duplex.on('end', () => {
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controller.close();
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});
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},
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cancel(reason) {
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duplex.destroy(new Error(reason));
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}
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});
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const writable = new WritableStream({
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write(chunk) {
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return new Promise<void>((resolve, reject) => {
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const isBackpressured = !duplex.write(chunk, (error) => {
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if (error) {
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reject(error);
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} else {
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resolve();
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}
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});
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if (isBackpressured) {
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duplex.once('drain', resolve);
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}
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});
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},
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close() {
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return new Promise<void>((resolve, reject) => {
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duplex.end(resolve);
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});
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},
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abort(reason) {
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duplex.destroy(new Error(reason));
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}
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});
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return { readable, writable };
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}
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@ -1,5 +1,2 @@
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import './plugins.js';
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import './plugins.js';
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export * from './classes.webduplexstream.js';
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export * from './classes.webduplexstream.js';
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export {
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convertDuplexToWebStream,
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} from './convert.js';
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