XPCOMUtils module ================= XPCOMUtils is a utility class that lives in :searchfox:`resource://gre/modules/XPCOMUtils.sys.mjs `. Its name is a little confusing because it does not live in XPCOM itself, but it provides utilities that help JS consumers to make consuming ``sys.mjs`` modules and XPCOM services/interfaces more ergonomic. .. js:autoclass:: XPCOMUtils :members: