React Redux 无法解析自己的模块

Question

When I run webpack for my project, I get this error suggesting that the React-Redux package can't resolve some of its internal modules:

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './components/Context' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 3:0-57 12:0-179
 @ ./index.tsx

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './components/Provider' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 1:0-45 12:0-179
 @ ./index.tsx

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './components/connectAdvanced' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 2:0-59 12:0-179
 @ ./index.tsx

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './connect/connect' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 4:0-40 12:0-179
 @ ./index.tsx

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './hooks/useDispatch' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 5:0-70 12:0-179 12:0-179
 @ ./index.tsx

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './hooks/useSelector' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 6:0-70 12:0-179 12:0-179
 @ ./index.tsx

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './hooks/useStore' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 7:0-61 12:0-179 12:0-179
 @ ./index.tsx

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './utils/batch' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 8:0-41 11:0-8
 @ ./index.tsx

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './utils/reactBatchedUpdates' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 9:0-79 11:9-14 12:0-179
 @ ./index.tsx

ERROR in ./node_modules/react-redux/es/index.js
Module not found: Error: Can't resolve './utils/shallowEqual' in '/home/.../frontend/src/node_modules/react-redux/es'
 @ ./node_modules/react-redux/es/index.js 10:0-48 12:0-179
 @ ./index.tsx

Does anyoe have any idea how to resolve this? Could it possibly be because I installed react-redux before redux? If so, how could I fix it. I already tried deleting package-lock.json and deleting node_modules and re-running npm install . I also dug into the filesystem and found that the unresolvable modules exist on the filesystem; for example, even though webpack can't resolve ./components/Provider , the file node_modules/react-redux/es/Provider.js exists and looks fine.

Here is the relevant part of package.json . Could it be a version mismatch or something?

"devDependencies": {
    "@types/classnames": "^2.2.9",
    "@types/react": "^16.9.9",
    "@types/react-dom": "^16.9.1",
    "@types/react-redux": "^7.1.5",
    "@types/redux": "^3.6.0",
    "@typescript-eslint/eslint-plugin": "^2.4.0",
    "@typescript-eslint/parser": "^2.4.0",
    "eslint": "^6.5.1",
    "eslint-config-airbnb": "^18.0.1",
    "eslint-import-resolver-typescript": "^2.0.0",
    "eslint-plugin-import": "^2.18.2",
    "eslint-plugin-jsx-a11y": "^6.2.3",
    "eslint-plugin-react": "^7.16.0",
    "eslint-plugin-react-hooks": "^1.7.0",
    "prop-types": "^15.7.2",
    "react": "^16.10.2",
    "react-dom": "^16.10.2",
    "react-redux": "^7.1.1",
    "redux": "^4.0.4",
    "source-map-loader": "^0.2.4",
    "ts-loader": "^6.2.0",
    "typescript": "^3.6.4",
    "typescript-eslint": "0.0.1-alpha.0",
    "webpack": "^4.41.0",
    "webpack-cli": "^3.3.9"
  },
  "dependencies": {}

Answer 1

Awesome, I finally got it to work. What did the trick in the end was deleting the whole project folder and re-installing it from GitHub. There must have been something wrong with the installed node_modules that even rm -rf couldn't fix.

---

EDIT: I lied. Apparently, when I deleted the project and reloaded it from GitHub, I accidentally reset the commit where I had added all of the Redux stuff, and as soon as I brought it back, the error returned as well. What actuallly happened was an error in my webpack.config.js file:

What I had was "extensions": [".ts", ".tsx"]

What I needed was "extensions": [".ts", ".tsx", ".js"]

Thus, even though the JS files were there, Webpack had been ignoring them because the ".js" extension was missing from my config file. Adding in those four characters fixed the problem. And so ends a several-hour-long session of debugging. Hope this helps anyone else stupid enough to screw up their Webpack config and then try to use it to load React-Redux.