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JavaScript Building Applications with React and Redux Putting it all Together Updating the Player, Counter and AddPlayerForm Components

Saqib Ishfaq
Saqib Ishfaq
13,912 Points
Posted by Saqib Ishfaq
Saqib Ishfaq
13,912 Points

not rendering the application and getting this error in console>>>

Context.js:10 Uncaught TypeError: _react.default.createContext is not a function
    at Object.<anonymous> (Context.js:10)
    at __webpack_require__ (bootstrap 07a6edc6a165a4397740:555)
    at fn (bootstrap 07a6edc6a165a4397740:86)
    at Object.<anonymous> (Provider.js:16)
    at __webpack_require__ (bootstrap 07a6edc6a165a4397740:555)
    at fn (bootstrap 07a6edc6a165a4397740:86)
    at Object.<anonymous> (index.js:7)
    at __webpack_require__ (bootstrap 07a6edc6a165a4397740:555)
    at fn (bootstrap 07a6edc6a165a4397740:86)
    at Object.<anonymous> (index.js:3)
Daniel Baker
Daniel Baker
15,369 Points

Same here, any luck?

3 Answers

shi zhen
shi zhen
3,339 Points
shi zhen
shi zhen
3,339 Points

I've got the same error while following along. What I've done to fix it are following:

David Hamilton
David Hamilton
21,522 Points
David Hamilton
David Hamilton
21,522 Points

The issue is with using a newer version of react-redux with an old version of react.

You can get it to work by going into the package.json and changing the react-redux version to "^5.0.0".

John Nguyen
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
John Nguyen
Full Stack JavaScript Techdegree Graduate 30,501 Points
John Nguyen
.a{fill-rule:evenodd;}techdegree seal-36
John Nguyen
Full Stack JavaScript Techdegree Graduate 30,501 Points

I had the same issue. It (most likely) has to do with your react-redux and redux versions.

I solved the issue by

1) downloading the project files(for this video) and copying the package.json file from the 'final' version of this video.

Package.json

{
  "name": "react-redux-course",
  "version": "1.0.0",
  "description": "React-Redux course for Treehouse",
  "main": "src/index.js",
  "scripts": {
    "prestart": "npm run lint",
    "start": "webpack-dev-server --progress --inline --hot",
    "lint": "eslint ./src/**/*.{js, jsx} --fix",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [
    "react",
    "redux",
    "treehouse"
  ],
  "author": "Beau Palmquist",
  "license": "MIT",
  "dependencies": {
    "react": "^15.3.2",
    "react-dom": "^15.3.2",
    "react-redux": "^4.4.5",
    "redux": "^3.6.0"
  },
  "devDependencies": {
    "babel-core": "^6.13.2",
    "babel-eslint": "^6.1.2",
    "babel-loader": "^6.2.7",
    "babel-preset-es2015": "^6.13.2",
    "babel-preset-react": "^6.11.1",
    "babel-preset-stage-0": "^6.5.0",
    "eslint": "^3.3.1",
    "eslint-plugin-react": "^6.1.2",
    "react-hot-loader": "^1.3.0",
    "webpack": "^1.13.2",
    "webpack-dev-server": "^1.16.2"
  }
}

2) running npm i

And that should fix the issue.

If you are still running into issues, you'd want to check your code compared to the 'final' version of this video's code. I had to do this and I used diffchecker.com to compare my code to the 'final' version.