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Create dev-middleware package (#38194)
Summary: Pull Request resolved: #38194 ## Context RFC: Decoupling Flipper from React Native core: react-native-community/discussions-and-proposals#641 ## Changes Inits the `react-native/dev-middleware` package. Contains an initial implementation of `/open-debugger`, migrated from react-native-community/cli@2535dbe. ## Attribution This implementation is greatly inspired by `expo/dev-server`: https://github.com/expo/expo/blob/1120c716f35cb28d88800e8f5d963d2b2ac94705/packages/%40expo/dev-server/src/JsInspector.ts#L18 Changelog: [Internal] Reviewed By: motiz88 Differential Revision: D46283818 fbshipit-source-id: 84cd5a958e32d7c20fd3aef56eaa01547e4ae192
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‎flow-typed/npm/chrome-launcher_v0.15.x.js‎

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict
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* @format
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* @oncall react_native
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*/
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declare module 'chrome-launcher' {
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import typeof fs from 'fs';
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import typeof childProcess from 'child_process';
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import type {ChildProcess} from 'child_process';
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declare export type Options = {
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startingUrl?: string,
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chromeFlags?: Array<string>,
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prefs?: mixed,
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port?: number,
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handleSIGINT?: boolean,
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chromePath?: string,
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userDataDir?: string | boolean,
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logLevel?: 'verbose' | 'info' | 'error' | 'warn' | 'silent',
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ignoreDefaultFlags?: boolean,
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connectionPollInterval?: number,
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maxConnectionRetries?: number,
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envVars?: {[key: string]: ?string},
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};
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declare export type LaunchedChrome = {
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pid: number,
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port: number,
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process: ChildProcess,
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kill: () => void,
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};
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declare export type ModuleOverrides = {
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fs?: fs,
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spawn?: childProcess['spawn'],
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};
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declare class Launcher {
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launch(options: Options): Promise<LaunchedChrome>;
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}
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declare module.exports: Launcher;
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}

‎flow-typed/npm/connect_v3.x.x.js‎

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict
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* @format
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* @oncall react_native
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*/
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declare module 'connect' {
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import type http from 'http';
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declare export type ServerHandle = HandleFunction | http.Server;
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declare type NextFunction = (err?: mixed) => void;
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declare export type NextHandleFunction = (
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req: IncomingMessage,
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res: http.ServerResponse,
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next: NextFunction,
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) => void | Promise<void>;
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declare export type HandleFunction = NextHandleFunction;
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declare export interface IncomingMessage extends http.IncomingMessage {
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originalUrl?: http.IncomingMessage['url'];
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}
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declare export interface Server extends events$EventEmitter {
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(req: IncomingMessage, res: http.ServerResponse): void;
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use(fn: HandleFunction): Server;
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use(route: string, fn: HandleFunction): Server;
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listen(
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port: number,
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hostname?: string,
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backlog?: number,
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callback?: Function,
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): http.Server;
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listen(port: number, hostname?: string, callback?: Function): http.Server;
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listen(path: string, callback?: Function): http.Server;
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listen(handle: any, listeningListener?: Function): http.Server;
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}
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declare type createServer = () => Server;
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declare module.exports: createServer;
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}

‎flow-typed/npm/node-fetch_v2.x.x.js‎

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict
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* @format
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* @oncall react_native
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*/
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// Modified from flow-typed repo:
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// https://github.com/flow-typed/flow-typed/blob/master/definitions/npm/node-fetch_v2.x.x/flow_v0.104.x-/node-fetch_v2.x.x.js
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declare module 'node-fetch' {
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import type http from 'http';
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import type https from 'https';
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import type {URL} from 'url';
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import type {Readable} from 'stream';
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declare export type AbortSignal = {
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+aborted: boolean,
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+onabort: (event?: {...}) => void,
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+addEventListener: (name: string, cb: () => mixed) => void,
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+removeEventListener: (name: string, cb: () => mixed) => void,
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+dispatchEvent: (event: {...}) => void,
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...
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};
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declare export class Request mixins Body {
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constructor(
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input: string | {href: string, ...} | Request,
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init?: RequestInit,
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): this;
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context: RequestContext;
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headers: Headers;
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method: string;
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redirect: RequestRedirect;
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referrer: string;
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url: string;
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// node-fetch extensions
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agent: http.Agent | https.Agent;
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compress: boolean;
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counter: number;
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follow: number;
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hostname: string;
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port: number;
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protocol: string;
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size: number;
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timeout: number;
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}
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declare type HeaderObject = {[index: string]: string | number, ...};
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declare export type RequestInit = {|
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body?: BodyInit,
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headers?: HeaderObject | null,
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method?: string,
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redirect?: RequestRedirect,
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signal?: AbortSignal | null,
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// node-fetch extensions
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agent?: (URL => http.Agent | https.Agent) | http.Agent | https.Agent | null,
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compress?: boolean,
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follow?: number,
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size?: number,
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timeout?: number,
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|};
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declare export interface FetchError extends Error {
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// cannot set name due to incompatible extend error
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// name: 'FetchError';
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type: string;
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code: ?number;
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errno: ?number;
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}
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declare export interface AbortError extends Error {
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// cannot set name due to incompatible extend error
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// name: 'AbortError';
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type: 'aborted';
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}
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declare type RequestContext =
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| 'audio'
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| 'beacon'
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| 'cspreport'
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| 'download'
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| 'embed'
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| 'eventsource'
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| 'favicon'
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| 'fetch'
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| 'font'
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| 'form'
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| 'frame'
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| 'hyperlink'
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| 'iframe'
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| 'image'
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| 'imageset'
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| 'import'
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| 'internal'
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| 'location'
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| 'manifest'
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| 'object'
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| 'ping'
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| 'plugin'
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| 'prefetch'
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| 'script'
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| 'serviceworker'
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| 'sharedworker'
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| 'subresource'
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| 'style'
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| 'track'
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| 'video'
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| 'worker'
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| 'xmlhttprequest'
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| 'xslt';
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declare type RequestRedirect = 'error' | 'follow' | 'manual';
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declare export class Headers {
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append(name: string, value: string): void;
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delete(name: string): void;
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forEach(callback: (value: string, name: string) => void): void;
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get(name: string): string;
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getAll(name: string): Array<string>;
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has(name: string): boolean;
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raw(): {[k: string]: string[], ...};
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set(name: string, value: string): void;
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entries(): Iterator<[string, string]>;
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keys(): Iterator<string>;
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values(): Iterator<string>;
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@@iterator(): Iterator<[string, string]>;
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}
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declare export class Body {
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buffer(): Promise<Buffer>;
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json(): Promise<any>;
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json<T>(): Promise<T>;
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text(): Promise<string>;
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body: stream$Readable;
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bodyUsed: boolean;
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}
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declare export class Response mixins Body {
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constructor(body?: BodyInit, init?: ResponseInit): this;
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clone(): Response;
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error(): Response;
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redirect(url: string, status: number): Response;
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headers: Headers;
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ok: boolean;
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status: number;
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statusText: string;
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size: number;
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timeout: number;
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type: ResponseType;
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url: string;
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}
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declare type ResponseType =
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| 'basic'
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| 'cors'
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| 'default'
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| 'error'
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| 'opaque'
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| 'opaqueredirect';
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declare interface ResponseInit {
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headers?: HeaderInit;
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status: number;
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statusText?: string;
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}
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declare type HeaderInit = Headers | Array<string>;
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declare type BodyInit =
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| string
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| null
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| Buffer
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| Blob
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| Readable
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| URLSearchParams;
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declare export default function fetch(
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url: string | Request,
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init?: RequestInit,
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): Promise<Response>;
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}

‎flow-typed/npm/temp-dir_2.x.x.js‎

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict
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* @format
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* @oncall react_native
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*/
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declare module 'temp-dir' {
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declare module.exports: string;
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}

‎packages/dev-middleware/.babelrc‎

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{
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"presets": [
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"@babel/preset-flow",
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[
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"@babel/preset-env",
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{
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"targets": {
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"node": "16"
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}
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}
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]
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]
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}

‎packages/dev-middleware/.gitignore‎

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# Dependencies
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/node_modules
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# Build output
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/dist

‎packages/dev-middleware/README.md‎

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# @react-native/dev-middleware
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![https://img.shields.io/npm/v/@react-native/dev-middleware?color=brightgreen&label=npm%20package](https://www.npmjs.com/package/@react-native/dev-middleware)
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Dev server middleware supporting core React Native development features. This package is preconfigured in all React Native projects.
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## Endpoints
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### `/open-debugger`
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Open the JavaScript debugger for a given CDP target (direct Hermes debugging).

‎packages/dev-middleware/index.js.flow‎

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict
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* @format
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* @oncall react_native
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*/
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export * from './src';

‎packages/dev-middleware/package.json‎

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{
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"name": "@react-native/dev-middleware",
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"version": "0.73.0",
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"description": "Dev server middleware for React Native",
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"keywords": [
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"react-native",
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"tools"
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],
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"homepage": "https://github.com/facebook/react-native/tree/HEAD/packages/dev-middleware#readme",
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"bugs": "https://github.com/facebook/react-native/issues",
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"repository": {
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"type": "git",
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"url": "https://github.com/facebook/react-native.git",
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"directory": "packages/dev-middleware"
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},
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"license": "MIT",
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"exports": "./dist/index.js",
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"files": [
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"dist"
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],
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"scripts": {
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"build": "yarn clean && babel src --out-dir dist",
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"dev": "babel src --out-dir dist --source-maps --watch",
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"clean": "rimraf dist",
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"prepare": "yarn build"
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},
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"dependencies": {
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"chrome-launcher": "^0.15.2",
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"connect": "^3.6.5",
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"node-fetch": "^2.6.0",
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"temp-dir": "^2.0.0"
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},
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"devDependencies": {
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"@babel/cli": "^7.20.0",
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"@babel/core": "^7.20.0",
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"@babel/preset-env": "^7.20.0",
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"@babel/preset-flow": "^7.20.0",
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"rimraf": "^3.0.2"
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},
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"engines": {
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"node": ">=18"
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}
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}

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