(Cross posted to firefox-dev, please reply on dev.platform) DOM Promise has been in the tree for a while, and is enabled for ChromeWorkers and certified apps. With a couple of patches, it will achieve conformance with the AP2 spec [1], which is what TC39 has accepted as the bare minimum for Promises in ECMA6. It will also be available on Workers as long as the pref is enabled. We currently have two JS promise implementations in our codebase: toolkit/modules/Promise.jsm addon-sdk <http://mxr.mozilla.org/mozilla-central/source/addon-sdk/>/source<http://mxr.mozilla.org/mozilla-central/source/addon-sdk/source/> /lib <http://mxr.mozilla.org/mozilla-central/source/addon-sdk/source/lib/>/ sdk<http://mxr.mozilla.org/mozilla-central/source/addon-sdk/source/lib/sdk/> /core<http://mxr.mozilla.org/mozilla-central/source/addon-sdk/source/lib/sdk/core/> /promise.js<http://mxr.mozilla.org/mozilla-central/source/addon-sdk/source/lib/sdk/core/promise.js>
which offer a different API and reimplement some code, one for chrome, one for content. My intention is: 1) Enable Promises for all chrome code. 2) Set dom.promise.enabled to true for tests 3) Migrate all users of the two promise implementations to the new style (including tests). 4) Get rid of these two JS implementations. The work is being tracked in Bug 939636 [2]. It would be a great help if developers who work on code using Promises could download the patch that enables Promises in chrome and submit patches to that bug updating code/tests. The new spec has a different style of creating promises, which may not interface well with callback oriented code. Feel free to ping me (nsm on IRC) if you need help. If there is a reason this shouldn't be done, please let me know. At some point in the future Spidermonkey will implement Promises natively, at which point (theoretically) all the code can simply transition to that with no changes. Nikhil [1] https://github.com/domenic/promises-unwrapping [2] https://bugzil.la/939636 _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
