Issue with running npm start. Weird error

Question

I am having issues with getting npm run to start

node:internal/modules/cjs/loader:488
      throw e;
      ^

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './lib/tokenize' is not defined by "exports"

Here is the package.json

"name": "my-app",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^5.11.4",
    "@testing-library/react": "^11.1.0",
    "@testing-library/user-event": "^12.1.10",
    "react": "^17.0.2",
    "react-dom": "^17.0.2",
    "react-scripts": "4.0.3",
    "web-vitals": "^1.0.1"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },

any help would be awesome!

Please refer here: https://stackoverflow.com/questions/69693907/error-err-package-path-not-exported-package-subpath-lib-tokenize-is-not-d — MagnusEffect, Nov 25 '21 at 06:30
Does this answer your question? [Error \[ERR\_PACKAGE\_PATH\_NOT\_EXPORTED\]: Package subpath './lib/tokenize' is not defined by "exports" in the package.json of a module in node\_modules](https://stackoverflow.com/questions/69693907/error-err-package-path-not-exported-package-subpath-lib-tokenize-is-not-d) — Kiran Mistry, Nov 25 '21 at 06:35

score 0 · Answer 1 · answered Nov 25 '21 at 06:29

0

This issue occurs when using the latest version of Node. Try rolling back to the LTS version 16.13.0.

Step 1:

nvm uninstall <version>

Step 2:

nvm install --lts

This should work for Windows

answered Nov 25 '21 at 06:29

SadFarm1

16
2

score 0 · Answer 2 · answered Nov 25 '21 at 06:30

for that you need to downgrade the node version here is solution

Solution 1: Downgrade nodejs version

In my case I am using nodejs v17.0.1 and I am facing above error. So that I just downgrade my nodejs to LTS version My error solved automatically. To downgrade nodejs Just use this command. First of all just uninstall latest version. Use this command.

nvm uninstall v17.0.1

          OR

nvm uninstall <your version>

and then Install LTS version. Use this command.

nvm install --lts

Solution 2: Delete node_modules and reinstall

Just delete node_modules and and .lock file then re-install your packages. And again run npm start and now your error might be solved.

Issue with running npm start. Weird error

2 Answers2

Solution 1: Downgrade nodejs version

Solution 2: Delete node_modules and reinstall