On Thu, Mar 22, 2012 at 4:54 PM, Brendan Eich <bren...@mozilla.org> wrote: > John J Barton wrote: >> >> If I go back to my previous question, can we understand what should happen >> here? >> >> if (version === 1) >> import y from 'lib1.js'; >> else >> import y from 'lib2.js'; > > > Again, no.
No, we can't understand this case? No, this is a compile error? > > 1. We are not breaking run-to-completion by nesting (conditionally on > control flow) blocking event loops. Where is the blocking event loop in the example above? I thought you said the modules are pre-fetched. > > 2. Also we are not losing static binding by having the names injected by > static syntactic forms depend on control flow dynamics. Well the example has control flow dynamics and names, so what happens? > > >> To me the answer should be that the lib1.js and lib2.js are fetched >> (because I did not specify async). But they should not be executed (or >> compiled IMO) until the statement executes. That does not seem to be what >> Brendan thinks. > > > Don't break the web. Good advice to be sure ;-) > > Seriously, you want something that is not tenable for developers or browser > implementors. Both 1 and 2 matter. You might argue 2 is not important but 1 > remains. TC39 wants dynamic things to be dynamic (modules reflect when > passed to load callbacks as objects with properties), and static things to > bind statically. I'm not arguing for anything other than clarification. Hopefully someone will just tell me that import statements can never appear in if statements. jjb _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
