In an OSGI context json-schema-validator requires the following package imports to be resolved:

com.fasterxml.jackson.databind,version=[2.10,3)
com.fasterxml.jackson.databind.node,version=[2.10,3)
org.apache.commons.lang3,version=[3.5,4)
org.jcodings
org.jcodings.specific
org.joni
org.joni.exception
org.slf4j,version=[1.7,2)

where all but org.jcodings, org.jcodings.specific, org.joniandorg.joni.exceptionare available as OSGI bundles publicly.org.jruby.joni:joni` unfortunately is not archived as OSGI bundle and so requires a custom rewrapping.

From doc/ecma-262.md I understood that the default is java.util.Regex anyway so the import of packages provided by org.jruby.joni:joni can be marked optional for resolution and can be provided when necessary.