No
How do i change the values of the manifest.json file? At present my build command appears to copy the template manifest.json directly to the output.
What are you expecting to happen? I think that yeah public/manifest.json is copied directly to build/manifest.json.
At the moment i just have a post build step that copies my own manifest.json file over the default one. I wondered if there was any way to generate it from the package.json or similar.
Hm, can you just modify public/manifest.json? Apart from index.html, I think that everything from public is just copied over with no magic, and you're free to modify anything already there as you see fit.
Modify the file in public/manifest.json; if you need to modify it, a Node script in your postbuild npm-script would be the best option.
Most helpful comment
What are you expecting to happen? I think that yeah
public/manifest.jsonis copied directly tobuild/manifest.json.