The version regexp pattern in the composer-schema is using the a possessive quantifier (*+) which is not supported by the Regular Expression specification from JavaScript.

However the JSON schema spec requires JavaScript expression syntax: https://json-schema.org/understanding-json-schema/reference/regular_expressions.

First reported by microsoft/vscode-json-languageservice#261