This is great news! Thanks for all the work that has gone into this and thanks in advance for continued support!
Greg Rundlett https://eQuality-Tech.com https://freephile.org On Tue, Mar 16, 2021 at 7:27 PM Roan Kattouw <rkatt...@wikimedia.org> wrote: > > The Vue migration team is pleased to announce that MediaWiki finally has > built-in support for writing modern JavaScript with ES6. > > Up until now, all JavaScript code in MediaWiki has been written in ES5 (a > version of JavaScript standardized in 2009), because MediaWiki maintains > support for some browsers that don't support ES6. Over the years this has > become increasingly frustrating for developers, because ES6 (standardized in > 2015) adds new language features that make writing code easier and more > pleasant, but these features couldn't be used in MediaWiki. A lot of modern > code and tools are now written in ES6, and browsers that don't support ES6 > have become obsolete. At this point, the only significant non-ES6 browser > that MediaWiki continues to support is Internet Explorer 11, whose usage is > relatively low, but not yet quite low enough for us to drop support for it. > In keeping with the IE11 announcement[1] from earlier this month, we will > continue to support IE11, but some new features will not support it. > > What this means for developers is that you can now use ES6 code in MediaWiki > core, extensions, and skins, as long as it's in a feature that doesn't need > to support IE11. ResourceLoader modules that use ES6 code have to be flagged > as such, and you will need to put ES6 code in a separate directory so that > different eslint rules can be applied. For detailed instructions on how to > start using ES6 in your code, see > https://www.mediawiki.org/wiki/ResourceLoader/ES6 . > > Unfortunately, ES6 code is not yet supported in on-wiki JavaScript (Gadgets, > user scripts, and site scripts), because we need to check that these scripts > are syntactically valid, and our current validator only understands ES5 [2]. > > To make this possible, we added functionality[3] to ResourceLoader to allow > modules to mark themselves as ES6-only, and prevent those modules from being > loaded in browsers that don't support ES6. We also made significant > changes[4] to our JavaScript minifier[5] to support the minification of ES6 > code, which previously generated invalid output[6] when confronted with ES6 > syntax. And we updated our eslint ruleset[7] to add a linter configuration > for ES6 code[8]. Thank you to Timo Tijhof (Krinkle) and DannyS712 for code > reviewing the ResourceLoader and minifier changes, to Lucas Werkmeister for > finding a critical bug[9] in the minifier change, and to James Forrester and > Ed Sanders for code reviewing the linter changes and releasing new versions > of all these packages. > > Roan Kattouw > On behalf of the Vue migration team (Anne Tomasevich, Eric Gardner, Volker > Eckl, and myself) > > [1] https://www.mediawiki.org/wiki/Compatibility/IE11 > [2] https://phabricator.wikimedia.org/T75714 > [3] https://gerrit.wikimedia.org/r/c/mediawiki/core/+/657953 > [4] https://gerrit.wikimedia.org/r/c/mediawiki/libs/Minify/+/664700 > [5] https://github.com/wikimedia/Minify/ > [6] https://phabricator.wikimedia.org/T255556 > [7] https://github.com/wikimedia/eslint-config-wikimedia > [8] https://github.com/wikimedia/eslint-config-wikimedia/pull/358 > [9] https://phabricator.wikimedia.org/T277161 > _______________________________________________ > Wikitech-l mailing list > Wikitech-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikitech-l _______________________________________________ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
