问题
I just connect the app with redux and react-redux connect function, together with state and dispatches. It compiled without problems but the results are not showing. And it looks like below.
I tried to find it and found that i have to change react version.
$ sudo npm install --save react@16.4.0 react-dom@16.4.0
But it didn't work.
I am following this tutorial. https://www.youtube.com/watch?v=BxzO2M7QcZw
回答1:
This is also happen to me. What I figure it out is that this is happen because of dependencies' version is now updated, But the dependencies of the youtube video that you watched were older than these days.
so repalce these dependencies of you package.json file
"react": "^16.4.1",
"react-dom": "^16.4.1",
"react-redux": "^5.0.7",
"react-router-dom": "^4.3.1",
"redux": "^4.0.0",
"redux-thunk": "^2.3.0",
and do npm install
Since connect() function connects a React component to a Redux store,
react, redux need to be version supported, If you willing to use newest dependencies please refer the documentation of redux
I think that above dependencies solve your problem.
回答2:
you're using wrong version of React, React.memo is introduced with version 16.6.0 so, try this command to install the right version
npm install --save react@16.6.0 react-dom@16.6.0
for more info click here
回答3:
That's because @material-ui/styles has a peer dependency on react >= 16.7.0-alpha.0 and react-dom >= 16.7.0-alpha.0 that include hooks.
To use @material-ui/styles, change your react and react-dom dependencies like this:
"dependencies": {
...
"react": "^16.7.0-alpha.2",
"react-dom": "^16.7.0-alpha.2",
...
},
来源：https://stackoverflow.com/questions/55689238/webpack-imported-module-4-react-default-a-memo-is-not-a-function