* feat(errors): validate preset when filename is absent Closes #10154 * fix: test overrides for filename compulsory * docs: rewrite validate error message per https://github.com/babel/babel/pull/10181#discussion_r301607986 * polish error message
* feat(errors): validate preset when filename is absent Closes #10154 * fix: test overrides for filename compulsory * docs: rewrite validate error message per https://github.com/babel/babel/pull/10181#discussion_r301607986 * polish error message