package.json

Title: vscode package.json String does not match the pattern  xxx

e.g:
package.json String does not match the pattern of "^(?:@[a-z0-9-*~][a-z0-9-*._~]*/)?[a-z0-9-~][a-z0-9-._~]*$".

This behavior is by design to enforce NPM conventions for the package.json file (to paraphrase, "lower-case only"). I agree it is a nuisance, especially since the project name is often pre-filled, e.g. by "create-react-app". As you point out, it is possible to create a custom schema to ignore this, but it's really not recommended. There isn't any alternative at this time. Myself, I just change the value to lower-case.