Issue #3439646 by Tom Konda, smustgrave: Some of string comparisons should use String.prototype.startsWith() or String.prototype.endsWith()

Issue #3238308 by mstrelan, bnjmnm, nod_, smustgrave, larowlan, rikki_iki: Refactor (if feasible) uses of the jQuery css function to use Vanilla/native

Issue #3278415 by nod_, lauriii, catch, Wim Leers, longwave, xjm, claudiu.cristea: Remove usages of the JavaScript ES6 build step, the build step itself, and associated dev dependencies

Jess authored 3 years ago and Ben Mullins committed 3 years ago

Issue #3262573 by longwave, nod_, xjm, alexpott, lauriii: Update our yarn dev dependencies to the extent allowed by current constraints

Issue #3253148 by mherchel, longwave, ckrina, droplet: Remove IE from core's browserlist, remove non-essential CSS importing and recompile assets