Bug - react-templates - Support of react 19

[barreiro]

Describe the problem

After upgrading to patternfly 6.3.1 and to react 19 I get the following error when running npm install:

npm error Could not resolve dependency:
npm error peer react@"^17 || ^18" from @patternfly/react-templates@6.3.1
npm error node_modules/@patternfly/react-templates
npm error   @patternfly/react-templates@"6.3.1" from the root project

How do you reproduce the problem?

Have an existing project with patternfly 6.3.1 and upgrade from react 18 to react 19

Expected behavior

The react-templates package should support react 19.

Is this issue blocking you?

I have copied react-templates components into my project for now, but would like to revert that as son as possible. As alternative we could continue stuck with react-18.

Screenshots

n/a

What is your environment?

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

What is your product and what release date are you targeting?

Horreum and we're targeting 09/30 for the next release.

Any other information?