v6.0.0 - Module not found: Can't resolve 'p-memoize' in create-react-app

I was previously using p-memoize v5.0.1 successfully in a create-react-app project. When I try upgrading to the new p-memoize v6.0.0 I get errors like:

Failed to compile.

./src/index.tsx
Module not found: Can't resolve 'p-memoize' in 'C:\Users\user\folder\my-app\src'

Steps to reproduce:

• Create a new template TypeScript CRA project:

npx create-react-app my-app --template typescript

• Install p-memoize as a dependency in the project:

npm i p-memoize

• Try importing p-memoize in e.g. index.tsx:

...
import reportWebVitals from "./reportWebVitals";
import "p-memoize";

ReactDOM.render(
...

• Try starting the app:

npm start

This results in an error message as above. It works if you downgrade p-memoize to v5.0.1.

[cduff]

FYI, the latest version of p-memoize (6.0.1) now works with the newly released version of create-react-app (5.0.0).

[cduff]

FYI @sindresorhus I just had a bit more of a look at this.

The problem is caused by a change in package.json from

"exports": "./index.js",

to

"exports": "./dist/index.js",

i.e. adding a subpath to exports breaks it. I tested hacking the package to remove the subpath and it works again.

I went looking for potentially associated outstanding issues against create-react-app and found the following:

https://github.com/facebook/create-react-app/issues/10933 https://github.com/facebook/create-react-app/issues/10892 https://github.com/facebook/create-react-app/issues/11528

So it seems there are known issues with create-react-app around this.