How are module specifiers resolved?

Tyler Breisacher tbreisacher at
Mon Nov 10 10:07:52 PST 2014

As far as I can tell, the ECMAScript spec doesn't answer this directly.
The HostNormalizeModuleName section says: "The actual normalization mapping
is implementation defined but typically includes processes such alphabetic
case normalization and expansion of abbreviated file system paths." (
so it sounds like the details of how that will work in web browsers, and
how it will work in node.js, etc., will be defined in a different spec,
perhaps owned by the w3c or something like that. Does (a draft of) that
other spec exist yet? Thanks!
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