Issue #3070521 by lauriii, tedbow, Wim Leers, larowlan, justafish, zrpnr, alexpott, catch: Trigger deprecation notifications on JavaScript deprecations to notify developers that deprecated code is being used

SA-CORE-2018-001 by cashwilliams, catch, cilefen, droplet, dawehner, bonus, agentrickard, David_Rothstein, Chi, Gábor Hojtsy, Heine, Wim Leers, Schnitzel, drpal, effulgentsia, tedbow, tim.plunkett, tstoeckler, xjm, will_c, stefan.r, samuel.mortenson, larowlan, greggles, logaritmisk, mpdonadio, pwolanin, plach

Issue #2925064 by drpal, dawehner, droplet, xjm, webchick, justafish: [1/2] JS codestyle: no-restricted-syntax

Revert "Issue #2925064 by drpal, dawehner, xjm, justafish, droplet: [1/2] JS codestyle: no-restricted-syntax"

This reverts commit b0a4d7e0.

Issue #2925064 by drpal, dawehner, xjm, justafish, droplet: [1/2] JS codestyle: no-restricted-syntax

Issue #2578377 by YesCT, jhodgdon, Gábor Hojtsy, alexpott, herom, xjm: Make translatable docs consolidated and better for developers

Issue #2548195 by nod_, JohnAlbin, madhavvyas, sriharsha.uppuluri: Only use single quotes in JavaScript and update .eslintrc

Issue #2118663 by cdog, nod_: Remove the Drupal.checkWidthBreakpoint method from drupal.js; replace with window.matchMedia where appropriate

Issue #2554219 by nod_, larowlan, tim.plunkett, regilero, droplet, japerry, samuel.mortenson, Pere Orga, effulgentsia, benjy, Gábor Hojtsy, greggles, Wim Leers, David_Rothstein, pwolanin, neclimdul, EclipseGc, znerol: Port Cross-site Scripting - Ajax system fixes from SA-CORE-2015-003 to Drupal 8

Issue #1639012 by nod_, corbacho, sun, droplet, seutje, tim.plunkett: Guard against broken behaviors

Revert "Revert "Issue #2510104 by pwolanin, nod_, Fabianx, Wim Leers, droplet, Pere Orga: Convert drupalSettings from JavaScript to JSON, to allow for CSP in the future""

This reverts commit e8e883f9.

Revert "Issue #2510104 by pwolanin, nod_, Fabianx, Wim Leers, droplet, Pere Orga: Convert drupalSettings from JavaScript to JSON, to allow for CSP in the future"

This reverts commit 94615a13.

Issue #2510104 by pwolanin, nod_, Fabianx, Wim Leers, droplet, Pere Orga: Convert drupalSettings from JavaScript to JSON, to allow for CSP in the future

Issue #2419897 by penyaskito, Wim Leers, webflo: Javascript translations are loaded in the wrong order due to missing dependencies

Issue #2309737 by rpayanm, hussainweb, max-kuzomko, herom, millerbennett, ianthomas_uk, quietone, Sutharsan, sumitmadan, toddmbloom: Remove deprecated format_plural usage

Issue #2362227 by dawehner, mpdonadio, znerol, tim.plunkett, skipyT: Replace all instances of current_path()

Issue #2146035 by olli, mondrake: Fixed drupalSettings.path.pathPrefix does not contain the language identifier.

Issue #2224691 by Sweetchuck: JavaScript Drupal.t and Drupal.formatPlural only works for non-english languages.

Issue #1996238 by sun, nod_, damiankloip, Wim Leers, longwave, alexpott, Xano, mdrummond, Mark Carver, Jeff Burnz, highrockmedia, joelpittet, et al: Replace hook_library_info() by *.libraries.yml file.

Issue #2182265 by Sweetchuck, nod_: Javascript file translations are several bugs away from working at all.

Issue #1913510 by erich_s, jibran, scresante, nod_, mitron: Core Javascript Files Not Using Standard Indentation.

Issue #1979468 by Wim Leers, nod_, pwolanin, longwave, thedavidmeister, jessebeach, larowlan | catch: .active from linkGenerator(), l() and theme_links() forces an upper limit of per-page caching for all content containing links.

Revert "Issue #1979468 by Wim Leers, pwolanin, nod_, thedavidmeister, larowlan: .active from linkGenerator(), l() and theme_links() forces an upper limit of per-page caching for all content containing links."

This reverts commit 624296e7.