On Tue, Sep 25, 2012 at 1:02 AM, Jussi Kalliokoski <[email protected]> wrote: > I find this interesting as well, because I've been thinking of creating Yet > Another(TM) module loader, which would be a standalone polyfill for Harmony > modules.
I just wrote one: https://github.com/hax/my.js/blob/master/src/loader.js > * If there's a cross-compilation hook on the loader, does the dependency > resolving happen before or after the compilation? Former is more efficient, > but places constraints on the compile-to-JS languages. I also have the same question. Currently Loader API does not provide feature to define module dependencies, so only latter is possible as current draft. In my.js loader implementation, I add extra "references" property which is accessible in hooks to make former works. > * Is there a way to do async cross-compilation with the hooks? e.g. offload > parsing and everything to a worker to keep the main thread responsive? +1. Currently only fetch hook is async, I think translate hook could also be async so that we can utilize Worker. On the other hand, fetch hook could also be sync. In fact I suggest follow API: options.fetch( relURL, baseURL, resolved ) fetch hook returns String (fulfill) or Module instance (skip translate hook) or throws (reject) or returns a Promise object as async form. options.translate( data:ModuleData ) ModuleData structure: { data: String // code source type: String // mimetype such as text/coffeescript uri: String // code uri references: [String] // uri references for dependencies relativeURL: String // relURL baseURL: String resolved: Any // Note: I dont think relativeURL/baseURL/resolved are useful for translate hook but just keep them as current draft } translate hook returns ModuleData or String (translated source) or Module instance (skip parent loader translate hooks) or throws (compilation error) or returns a Promise object as async form. > * Is it possible to import things to local scope? For example, is this a > syntax error, and if not, what happens: `function x () { import y from x }` I think it should be syntax error. _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
