Change Details

{icon chevron-left} {T178356} | [None yet] {icon chevron-right} This ticket is to see about raising the grade A support / modern layer JS version from ES2015 (aka "ES6") to the next milestone ES2017 ("ES8"). #### Blockers * [x] Peast validator ([[ https://phabricator.wikimedia.org/T277675#9528940 | supports ES15 / ES2024 ]]) * minifier * [x] ES2016 (ES7) ([[ https://gerrit.wikimedia.org/r/c/mediawiki/libs/Minify/+/891938 | gerrit:891938 ]]) * [ ] ES2017 (ES8) * [ ] wanting to support certain old browser versions because they have significant market share - we should get signoff from a WMF dev for this. maybe Krinkle? #### Todo once unblocked * [ ] update feature tests in startup.js to check for ES2017 (ES8) ([[ https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1105907 | gerrit:1105907 ]]. but may not be needed. no Array.includes errors in logstash in last 3 months) * [ ] patch [[ https://github.com/wikimedia/eslint-config-wikimedia | eslint-config-wikimedia ]] * [ ] to allow ES2016 (ES7) (https://github.com/wikimedia/eslint-config-wikimedia/pull/599) * [ ] to allow ES2017 (ES8) * [ ] patch Peast configuration (site script validator) to allow ES2017 (ES8) in ResourceLoader / gadgets * [ ] update https://www.mediawiki.org/wiki/Compatibility#General_information #### Features * [[ https://github.com/sudheerj/ECMAScript-features | ES7 / ES2016 ]] ** `**` (exponential operator, to the power of) ** `Array.includes()` * [[ https://github.com/sudheerj/ECMAScript-features?tab=readme-ov-file#es2017-or-es8 | ES8 / ES2017 ]] ** `async` / `await` ** `Object.values()` ** `Object.entries()` ** `Object.getOwnPropertyDescriptors()` ** `String.padStart()`, `String.padEnd()` ** shared memory and atomics ** trailing commas #### Related tickets * {T277675} * Gadgets - {T357197} * Codex - {T382391}

{icon chevron-left} {T178356} | [None yet] {icon chevron-right} ### Motivation This ticket is to raise the Grade A requirement for the Modern JS layer, from ES2016 (aka "ES7") to the next milestone ES2017 ("ES8"). The primary motivation is native use of `async-await` syntax, as introduced in ES2017. **JavaScript features**: * [[ https://github.com/sudheerj/ECMAScript-features | ES7 / ES2016 ]] ** `**` (exponential operator, to the power of) ** `Array.includes()` * [[ https://github.com/sudheerj/ECMAScript-features?tab=readme-ov-file#es2017-or-es8 | ES8 / ES2017 ]] ** `async` / `await` ** `Object.values()` ** `Object.entries()` ** `Object.getOwnPropertyDescriptors()` ** `String.padStart()`, `String.padEnd()` ** shared memory and atomics ** trailing commas #### Blockers * [x] Peast validator: already [[ https://phabricator.wikimedia.org/T277675#9528940 | supports any ES version upto ES2024 ]] * [ ] JavaScriptMinifier: support ES2016 and ES2017: {T277675} * [ ] Browser market share for older browser versions is low enough. We should get signoff from a WMF dev for this. Maybe @Krinkle? #### Todo Once unblocked: 1. ResourceLoader: * [ ] update startup.js to raise feature tests requirement to ES2017. * [ ] update Peast call in Module::validateScriptFile() to allow ES2017 in Gadgets and user scripts. 2. [[ https://github.com/wikimedia/eslint-config-wikimedia | eslint-config-wikimedia ]]: * [ ] update "client" preset to allow ES2016 (ES7) (https://github.com/wikimedia/eslint-config-wikimedia/pull/599) * [ ] update "client" preset to allow ES2017 * [ ] publish release to npm 3. Documentation: * [ ] Update https://www.mediawiki.org/wiki/Compatibility#General_information #### Related tickets * {T277675} * Gadgets - {T357197} * Codex - {T382391}

{icon chevron-left} {T178356} | [None yet] {icon chevron-right} This ticket is to see about raising the grade A support / modern layer JS version from ES2015 (aka "ES6") to the next milestone ES2017 ("ES8").### Motivation #### BlockersThis ticket is to raise the Grade A requirement for the Modern JS layer, from ES2016 (aka "ES7") to the next milestone ES2017 ("ES8"). * [x] Peast validator ([[ https://phabricator.wikimedia.org/T277675#9528940 | supports ES15 / ES2024 ]]) * minifier * [x] ES2016 (ES7) ([[ https://gerrit.wikimedia.org/r/c/mediawiki/libs/Minify/+/891938 | gerrit:891938 ]]) * [ ] ES2017 (ES8) * [ ] wanting to support certain old browser versions because they have significant market share - we should get signoff from a WMF dev for this.The primary motivation is native use of `async-await` syntax, maybe Krinkle?as introduced in ES2017. #### Todo once unblocked * [ ] update feature tests in startup.js to check for ES2017 (ES8) ([[ https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1105907 | gerrit:1105907 ]]. but may not be needed. no Array.includes errors in logstash in last 3 months) * [ ] patch [[ https://github.com/wikimedia/eslint-config-wikimedia | eslint-config-wikimedia ]] * [ ] to allow ES2016 (ES7) (https://github.com/wikimedia/eslint-config-wikimedia/pull/599) * [ ] to allow ES2017 (ES8) * [ ] patch Peast configuration (site script validator) to allow ES2017 (ES8) in ResourceLoader / gadgets * [ ] update https://www.mediawiki.org/wiki/Compatibility#General_information #### Features**JavaScript features**: * [[ https://github.com/sudheerj/ECMAScript-features | ES7 / ES2016 ]] ** `**` (exponential operator, to the power of) ** `Array.includes()` * [[ https://github.com/sudheerj/ECMAScript-features?tab=readme-ov-file#es2017-or-es8 | ES8 / ES2017 ]] ** `async` / `await` ** `Object.values()` ** `Object.entries()` ** `Object.getOwnPropertyDescriptors()` ** `String.padStart()`, `String.padEnd()` ** shared memory and atomics ** trailing commas #### Blockers * [x] Peast validator: already [[ https://phabricator.wikimedia.org/T277675#9528940 | supports any ES version upto ES2024 ]] * [ ] JavaScriptMinifier: support ES2016 and ES2017: {T277675} * [ ] Browser market share for older browser versions is low enough. We should get signoff from a WMF dev for this. Maybe @Krinkle? #### Todo Once unblocked: 1. ResourceLoader: * [ ] update startup.js to raise feature tests requirement to ES2017. * [ ] update Peast call in Module::validateScriptFile() to allow ES2017 in Gadgets and user scripts. 2. [[ https://github.com/wikimedia/eslint-config-wikimedia | eslint-config-wikimedia ]]: * [ ] update "client" preset to allow ES2016 (ES7) (https://github.com/wikimedia/eslint-config-wikimedia/pull/599) * [ ] update "client" preset to allow ES2017 * [ ] publish release to npm 3. Documentation: * [ ] Update https://www.mediawiki.org/wiki/Compatibility#General_information #### Related tickets * {T277675} * Gadgets - {T357197} * Codex - {T382391}