This updates the 4.0 branch to support the latest LTS version of NodeJS (currently 14.x), allowing the same version to be used across all WordPress branches that receive security updates as a courtesy.
Because older branches use (really) old versions of NodeJS, the local Docker environment cannot be backported since the needed dependencies will not run on these older versions (see #48301). This also blocks the ability to move automated testing over to GitHub Actions (see #50401).
This change also introduces a `packager-lock.json` file to the branch.
In addition to backporting the package updates that happened after branching 4.0, dependencies that were removed in future releases have also been updated to their latest versions.
Props desrosj, dd32, netweb, jorbin.
Merges [30059-30063,30066-30067,31425,31504,31557,31648,31649-31650,32356-32357,32988,33726,35363,35513,35521,35538-35541,35859,36861-36865,37017,37019-37020,37212,37612,38111,39110,39113,39115-39117,39478,41835,42460-42461,42463,42887,43320,43323,43977,44219,44233,45321,45765,46404,46408-46409,47404,47867,47872-47873,48705,49636,49933,49937,49939,50126,50176,50185,50192] to the 4.0 branch.
See #52341.
Built from https://develop.svn.wordpress.org/branches/4.0@50218
git-svn-id: http://core.svn.wordpress.org/branches/4.0@49885 1a063a9b-81f0-0310-95a4-ce76da25c4cd
RTL files are now created on build for core CSS files. These files replace the LTR file completely, rather than being in addition to the existing LTR file.
Benefits:
* For the user: less CSS is served in RTL, less HTTP requests on the frontend, and less work for the browser.
* For the core developer: Let the tools do the work.
Notes for core development:
* The file generation task is `grunt rtl`.
* `grunt watch` now handles generating RTL files in /build when a CSS file in /src is saved.
* /src is now locked to LTR. RTL testing must occur via /build. When attempting to run an RTL text direction with /src, an admin notice will display.
Expect RTL bugs. Please report them.
props yoavf.
see #24977.
Built from https://develop.svn.wordpress.org/trunk@26107
git-svn-id: http://core.svn.wordpress.org/trunk@26022 1a063a9b-81f0-0310-95a4-ce76da25c4cd