React-Native-Web. Build Error - Unable to resolve "./RCTNetworking"

[CaptainJeff]

Is there an existing issue for this?

• I have searched the existing issues

Describe the issue

When I'm trying to build the project I run into the error

Unable to resolve "./RCTNetworking" from "node_modules/react-native/Libraries/Network/XMLHttpRequest.js"

Seems like the issue is node_modules/react-native/Libraries/Network directory has an RCTNetworking.android.js and RCTNetworking.ios.js but the metro.config.js can't find a corresponding file for web.

I have a dependency that makes my API requests with axios (that i access from my npm module / not directly from my app components/stores.

I've tried mocking out the RCTNetworking but can't seem to get anything to work. It will either not make the request or will fail with the same import error.

For instance if I do

if (moduleName.endsWith("RCTNetworking")) {
      return {
        filePath: require.resolve("identity-obj-proxy"),
        type: "sourceFile"
      }
    }

It hides the error on build but I can't make HTTP calls and gives me the following error when I try to make an API request

TypeError: Cannot read properties of undefined (reading 'default')
    at XMLHttpRequest.send (XMLHttpRequest.js:527:7)
    at dispatchXhrRequest (xhr.js:195:13)
    at tryCallTwo (core.js:45:5)
    at doResolve (core.js:200:13)
    at new Promise (core.js:66:3)
    at xhr (xhr.js:15:10)
    at ThrottlingAdapter.<anonymous> (adapter.js:186:40)
    at Generator.next (<anonymous>)
    at adapter.js:8:71
    at tryCallTwo (core.js:45:5)
    at Axios.request (Axios.js:45:41)

Expected behavior

Would expect to compile and be able to make API requests.

Steps to reproduce

1. npx expo start --web -c

"react-native": "0.74.2",
"expo": "^51.0.0"

Test case

N/A

Additional comments

No response

[CaptainJeff]

Here is some more information

When i run npx expo start --web -c i'm able to resolve this by updating my metro.config.js

/**
 * Metro configuration
 * 
 *
 * u/type {import('metro-config').MetroConfig}
 */
const { getDefaultConfig } = require("expo/metro-config")
const { mergeConfig } = require("@react-native/metro-config")
const path = require("path")

const defaultConfig = getDefaultConfig(__dirname)

const {
  resolver: { sourceExts, assetExts }
} = defaultConfig

const config = {
  transformer: {
    getTransformOptions: async () => ({
      transform: {
        experimentalImportSupport: true,
        inlineRequires: true
      }
    }),
    babelTransformerPath: require.resolve("react-native-svg-transformer/expo")
  },
  resolver: {
    assetExts: [...assetExts.filter((ext) => ext !== "svg"), "ttf", "otf"],
    sourceExts: [...sourceExts, "svg"],
    extraNodeModules: {
      "react-native": path.resolve(__dirname, "node_modules/react-native-web"),
      stream: require.resolve("stream-browserify"),
      buffer: require.resolve("buffer"),
      process: require.resolve("process/browser")
    }
  }
}

config.resolver.resolveRequest = (context, moduleName, platform) => {
  if (platform === "web") {
    if (moduleName.endsWith("RCTNetworking")) {
      return {
        filePath: require.resolve("identity-obj-proxy"),
        type: "sourceFile"
      }
    }

    if (moduleName.endsWith("./RCTAlertManager")) {
      return {
        filePath: require.resolve("identity-obj-proxy"),
        type: "sourceFile"
      }
    }
 
  }

  return context.resolveRequest(context, moduleName, platform)
}

module.exports = mergeConfig(defaultConfig, config)

https://facebook.github.io/metro/docs/configuration
And including global.XMLHttpRequest = global?.originalXMLHttpRequest || global.XMLHttpRequest in my index.js file.

But when i bundle and serve the app npx expo export -p web && npx serve dist --single it doesn't work.

I get various issues.

For example

index-fae72be5f22c92931a109296bd504de0.js:5417 TypeError: Cannot read properties of undefined (reading 'node') which comes from the identify-obj-proxy dependency. But if I fix that then i get

TypeError: r(...).default.addListener is not a function which comes from node_modules/react-native/Libraries/Network/XMLHttpRequest.js

    if (this.readyState !== this.OPENED) {
      throw new Error('Request has not been opened');
    }
    if (this._sent) {
      throw new Error('Request has already been sent');
    }
    this._sent = true;
    const incrementalEvents =
      this._incrementalEvents || !!this.onreadystatechange || !!this.onprogress;

    this._subscriptions.push(
      RCTNetworking.addListener('didSendNetworkData', args =>
        this.__didUploadProgress(...args),
      ),
    );
    this._subscriptions.push(
      RCTNetworking.addListener('didReceiveNetworkResponse', args =>
        this.__didReceiveResponse(...args),
      ),
    );
    this._subscriptions.push(
      RCTNetworking.addListener('didReceiveNetworkData', args =>
        this.__didReceiveData(...args),
      ),
    );

I feel like I've tried everything. If anyone has any tips for this it would be super appreciated!

[CaptainJeff]

Follow up.

This worked after updating my react-native to 0.76.3 and expo to 52.0.11

[Daavidaviid]

Did you get the issue again upgrading to SDK53?
I'm getting a lot of errors like:

Unable to resolve "./BaseViewConfig" from "node_modules/react-native/Libraries/NativeComponent/PlatformBaseViewConfig.js"