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Vue 3.4
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kazupon
March 06, 2024
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kazupon
March 06, 2024
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Transcript
Vue.js 3.4 v-tokyo#19 2024.03.06 @kazupon
ࣗݾհ
PLAID, inc. Vue.js Core Team Member Nuxt Community team
Vue.js Japan User Group Organizer Creator of Vue I18n & Intlify Maintainer of Nuxt I18n @kazu_pon kazupon kazupon
͡Ίʹ
2023 Vue 3.4 ϦϦʔεʂ https://blog.vuejs.org/posts/vue-3-4
ࠓ͢͜ͱ • Vue 3.4 ͰϦϦʔε͞Εͨ༰ʹ͍ͭͯ • ϚΠφʔΞοϓσʔτʹؔΘΒͣɺϦΞΫςΟϒ γεςϜίϯύΠϥपΓ͕େ͖͘Ξοϓσʔτ͞ Ε͍ͯΔͷͰɺͦͷลΓ༰ৄ͠Ίʹ
3.4 ϦϦʔε༰
ػೳͱվળ • v-bind লུه๏ͷαϙʔτ • de fi neModel ͷ҆ఆԽ •
ϋΠυϨʔγϣϯपΓͷվળ • ΤϥʔίʔυͱίϯύΠϧλΠϜϑϥάͷϦϑΝϨ ϯεαϙʔτ • ίϯύΠϥύϑΥʔϚϯεͷվળ • ϦΞΫςΟϒγεςϜͷվળ
ഇࢭػೳ • άϩʔόϧ JSX ໊લۭؒ • Reactivity Transform • app.con
fi g.unwrapInjectedRef • vnode ϓϦϑΟΫεʹΑΔΠϕϯτϦεφʔ • v-is σΟϨΫςΟϒ
ͦΕͰ ݟ͍͖ͯ·͠ΐ͏ʂ 👉
ػೳͱվળ ✨📈
v-bind লུه๏ͷαϙʔτ
• ม໊͕όΠϯυઌͷଐੑ·ͨ props ໊ͱಉ͡ͳ ΒলུͰ͖ΔΑ͏ʹͳͬͨ ಉ໊ͷলུه๏ Before After
• v-bind ͷಉ໊লུه๏ JavaScript ͷΦϒδΣΫτ ॳظԽ͢Δࡍͷলུه๏ͱಉ͡ JavaScript ͱࣅͨߏจ Vue v-bind
JavaScript มͷΈΛࢦఆ͢Δলུ ه๏ࣅ͍ͯΔ
de fi neModelͷ҆ఆԽ
de fi neModel • <script setup> Ͱ v-model ͰόΠϯυ͢Δ props
Λ ఆٛͰ͖Δ syntax sugar ͷΑ͏ͳϚΫϩ • 3.3 Ͱ࣮ݧతػೳͱͯ͠ϦϦʔε͞Εɺ3.4 ͰΕͯ ਖ਼ࣜػೳʹͳͬͨ https://ja.vuejs.org/api/sfc-script-setup#de fi nemodel
de fi neModel ΛΘͳ͍߹… • de fi neProps ɺde fi
neEmits Λͬͯఆٛͯ͠ɺ͞Β ʹͷಉظΛͱΔͨΊͷίʔυΛॻ͔ͳ͚ΕͳΒ ͳ͔ͬͨ
ϋΠυϨʔγϣϯ पΓͷվળ
3.4 ҎલͰ͔ΓͮΒ͔ͬͨ
3.4 Ҏ߱Ͱվળʂ • ΫϥΠΞϯτͱαʔόʔͷϨϯμϦϯάͷࠩҟΛ ϝοηʔδ & DOM ϋΠϥΠτͰ֬ೝՄೳʹͳͬͨ classɺstyle ɺಈతόΠϯυͨ͠ଐੑνΣοΫͯ͘͠ΕΔ
production ͚ʹίϯύΠϥλΠϜϑϥάΛՃ • __VUE_PROD_HYDRATION_MISMATCH_DETAILS__ ʹΑΓɺproduction ڥͰ֬ೝͰ͖ΔΑ͏ʹͳͬ ͨ σόοά࣌ʹͷΈ༻͠·͠ΐ͏ʂ ϋΠυϨʔγϣϯपΓͷϩδοΫ͕όϯυϧ͞ΕΔͷͰ
Τϥʔίʔυͱ ίϯύΠϧλΠϜϑϥάͷ ϦϑΝϨϯεαϙʔτ
production ڥͰΤϥʔใΛআͯ͠͠·͏ • development ڥͰɺΤϥʔղফͷͨΊʹใΛ ఏڙ͢Δ͕ɺόϯυϧαΠζݮͷͨΊɺ production Ϗϧυ࣌ͦΕΒΛআ͢Δ Development Production
Τϥʔใ͕ Τϥʔίʔυʹ ஔ͖ΘΔ ΤϥʔίʔυΛݩʹ Vue ͷιʔείʔυ͔Βղಡ͕ඞཁ…
3.4 Ҏ߱Ͱ • ΤϥʔίʔυͷϦϑΝϨϯεΛࢀরͰ͖Δ URL ͕ ग़ྗ͞ΕΔΑ͏ʹͳΔ Development Production URL
ΛΫϦοΫͯ͠ϦϯϑΝϨϯεͱͯ͠ܝࡌ͞Ε͍ͯΔ ՕॴͰৄࡉใΛ֬ೝͰ͖Δ
3.4 ͰՃ͞ΕͨϦϑΝϨϯεϖʔδ • ެࣜυΩϡϝϯτʹ Ճ͞Εͨ • ϥϯλΠϜͱίϯύΠ ϥͷΤϥʔίʔυͱ ϝοηʔδ͕ҰཡͰఏ ڙ͞Ε͍ͯΔ
https://vuejs.org/error-reference/
ίϯύΠϧλΠϜϑϥάαϙʔτ • Vite ͳͲͷόϯυϥͰࢦఆ͢ΔίϯύΠϧλΠϜϑϥ άͷใެࣜυΩϡϝϯτͰใఏڙΛαϙʔτ https://ja.vuejs.org/api/compile-time- fl ags
ίϯύΠϥ ύϑΥʔϚϯεͷվળ
3.4 ͰίϯύΠϧ͕શମతʹ 44% ͘ͳ͍ͬͯΔ • Elk ΛͬͨϕϯνϚʔ Ϋ݁Ռ https://github.com/elk-zone/elk
• ܭଌ༰: SFC ղੳ ʙ JS ίʔυ & ιʔεϚοϓੜ·ͰΛ ܭଌ https://github.com/vuejs/core/pull/9674
Ͳ͏ͬͯͨ͘͠ͷ͔ 🏎💨
ύʔαʔΛ2ഒߴԽͨ͠ • ύʔαʔϑϧεΫϥον͔Βॻ͖͠ • 3.4 Ҏલ ࠶ؼԼ߱ߏจղੳ (Recursive Descent
Parsing) + ਖ਼نදݱ • 3.4 Ҏ߱ htmlparser2 ͔ΒϑΥʔΫͨ͠༗ݶΦʔτϚτϯΛ ͬͨτʔΫφΠβʔ ςϯϓϨʔτจࣈྻεΩϟϯΛઌಡΈͱ࠷খݶͷόοΫτ ϥοΫʹΑΓ1ԟ෮ͰॲཧͰ͖ΔΑ͏ʹͨ͠ https://github.com/vuejs/core/blob/main/packages/compiler-core/src/tokenizer.ts
ίʔυੜ40%ۙͨ͘͘͠ • ιʔεϚοϓͰඞཁʹͳΔҐஔใ (colum / row) ͷܭࢉΛ࠷దԽ • Vue ίϯύΠϥίʔυੜ(CodeGen)Ͱ
SFC ςϯϓϨʔτจ ࣈྻ͔ΒύʔαʔʹΑͬͯੜ͞Εͨ AST Λղੳͯ͠ɺAST ͷ֤ Node ͝ͱʹ JS ίʔυͷஅยతͳจࣈྻΛྻʹ push ͍ͯ͠Δ • ͦͷ࣌ʹɺιʔεϚοϓੜॲཧߦ͓ͬͯΓɺੜ͞ΕΔJS ίʔυଆ͔ΒSFC ςϯϓϨʔτଆͷҐஔΛಛఆͰ͖ΔΑ͏Ґஔ ใ Λܭࢉͯ͠Ϛοϐϯά͍ͯ͠Δ • ͦͷϚοϐϯάܭࢉॲཧͰɺྻʹੵ͞Εͨஅยతͳ JS ίʔυͷจࣈྻɺfor จΛ࣮ߦͯ͠ҐஔใΛܭࢉ͍ͯ͠Δ
ίʔυੜ40%ۙͨ͘͘͠ • ιʔεϚοϓੜ͢ΔͨΊʹඞཁͳॲཧίετͷ࠷దԽ • Vue ίϯύΠϥͰɺιʔεϚοϓੜʹ source-map-js ͱ͍͏ύοέʔδΛ͍ͬͯΔ • SourceMapGenerator.prototype.addMapping
ͰɺҾ ͷνΣοΫϚοϐϯάͷόϦσʔγϣϯΛ࣮ߦ͍ͯ͠Δ • ͦΕΒ Vue ίϯύΠϥʹͱͬͯΦʔόʔϔουͳͷͰɺ addMapping Λݺͣʹ෦APIΛݺͼग़͢͜ͱͰճආ
• VueίϯύΠϥ SFC ʹରͯ͠ύʔεΛ2ճ࣮ߦ͍ͯ͠ Δ • 1ճ: SFC ຊମ
SFC ͷ templateɺscriptɺstyle ͳͲΛநग़ • 2ճ: SFC ςϯϓϨʔτ ࠷ॳͷύʔεͰநग़͞Εͨ SFCϒϩοΫ template Λ ύʔε͢Δ SFCςϯϓϨʔτͷίϯύΠϧΛޮԽͨ͠
• 2 ճͷ SFCςϯϓϨʔτͷύʔεͰੜ͞ΕΔιʔεϚο ϓͷҐஔใɺ1ճͷ SFC ϒϩοΫԽͰੜ͞Εͨ ιʔεϚοϓͷҐஔใ͔ΒΦϑηοτʹͳ͍ͬͯͳ͍… • ͭ·ΓɺSFCςϯϓϨʔτ͕
JS ίʔυʹίϯύΠϧ͞ΕΔ ࡍʹɺ1ճͰੜ͞ΕͨιʔεϚοϓใΛݩʹɺSFC ς ϯϓϨʔτͷιʔεϚοϓͷҐஔใΛܭࢉͯ͠Ϛοϐϯ άͤ͞ͳ͚ΕͳΒͳ͍ SFCςϯϓϨʔτͷίϯύΠϧΛޮԽͨ͠ ύʔεͰੜ͞Εͨ AST ΛݩʹιʔεϚοϓΛϚοϐϯά ͢Δͷඇৗʹߴίετʂ
• 3.4 Ͱॻ͖͞ΕͨύʔαʔʹɺparseMode ΛՃ
• parseMode ʹΑͬͯύʔαʔɺSFC ςϯϓϨʔτͷύʔεͰ 1ճͷύʔεͰࣄલॲཧ͞Εͨ AST Λ2ճͷύʔεͰ࠶ ར༻͠ɺιʔεϚοϓͷϚοϐϯάॲཧճආ͢Δ͜ͱͰޮత ʹॲཧͰ͖ΔΑ͏ʹͳ͍ͬͯΔ SFCςϯϓϨʔτͷίϯύΠϧΛޮԽͨ͠
ϦΞΫςΟϒγεςϜ ͷվળ
• Case1: computed ͷ͕มΘΒͳ͍ͷʹɺͦΕʹґଘ͢Δ computed ͕࣮ߦ͞Εͯ͠·ͬͨΓɺwatch / watchEffect ͷίʔϧόοΫɺrender
͕τϦΨʔ͞Εͯ ͠·͏ • Case2: ͋ΔϦΞΫςΟϒͳΛෳ computed ʹ͍ͯ͠Δͱ͖ ʹɺϦΞΫςΟϒ͕มΘͬͨͱ͖ʹɺwatch / watchEffect ͷίʔϧόοΫ͕ෳճτϦΨʔ͞Εͯ͠· ͏ 3.4 Ͱ computed पΓͷ༷ʑͳͳղܾ͞Ε͍ͯΔ
• Case3: ϦΞΫςΟϒͳྻͷ shiftɺunshiftɺsplice Ͱྻͷ ༰Λมߋ͢Δͱɺwatch / watchEffect ͷίʔϧόο
Ϋ͕ෳճτϦΨʔ͞Εͯ͠·͏ 3.4 Ͱ computed पΓͷ༷ʑͳͳղܾ͞Ε͍ͯΔ
• GitHub Issue https://github.com/vuejs/core/pull/5912 ͜͏͕ͨ͠ϦΞΫςΟϒվળ PR Ͱશͯमਖ਼͞Εͨ
• setInterval Ͱ ref ͳͰ͋Δ ms ߋ৽ʹΑͬͯɺsecɺ minɺhour ͷ computed
Λߋ৽͢ΔσϞ ͜ͷվળʹΑΓύϑΥʔϚϯε͕ܶతʹվળͨ͠ https://twitter.com/johnsoncodehk/status/1695383715906744449
Ͳ͏ͬͯ ύϑΥʔϚϯεΛվળͨ͠ͷ͔ 🏎💨
• 3.4Ҏલ: • deps.length = 0 Ͱొ͞Ε͍ͯΔ dep ܊Λআ͍ͯͨ͠ •
3.4Ҏ߱: • deps ͷొঢ়گΛΧϯλ _depsLength ʹΑͬͯཧ • _depsLength ͕Ϧηοτ͞ΕΔͷΈɻdeps ͷݹ͍ dep ৽͠ ͍ dep ʹΑ্ͬͯॻ͖͍ͯ͠Δ • ্ॻ͖͖͠Ε͍ͯͳ͍ deps ͷݹ͍ dep ܊ɺdeps.length = _depsLength ʹΑͬͯτϦϛϯά͞ΕΔ ෆඞཁͳ GC Λආ͚Δ
• DirtyLevels Λಋೖͯ͠ computed ͷ͕ԚΕ͍ͯΔ (ߋ৽͞Ε ͍ͯΔ)͔Ͳ͏͔νΣοΫͰ͖ΔΑ͏ʹɺReactiveEffect ʹͦ ͷঢ়ଶΛ࣋ͭΑ͏ʹ͍ͯ͠Δ •
ϦΞΫςΟϒͳͷߋ৽࣌ͷτϦΨʔʹ͓͍ͯɺ ReactiveEffect ΛεέδϡʔϥʔͰ࣮ߦͤ͞ΔͨΊʹɺɹ ΩϡʔΠϯά͢Δ͔Ͳ͏͔ DirtyLevels ͰผͰ͖ΔΑ͏ʹ͠ ͍ͯΔ • ͞Βʹ ReactiveEffect ʹɺͦΕࣗମ͕࣮ߦ͞Ε͍ͯΔ͔Ͳ͏ ͔ผ͢ΔΧϯλมΛ࣋ͭ͜ͱͰɺແବʹΩϡʔΠϯά ͤ͞ͳ͍Α͏ʹ੍ޚ͍ͯ͠Δ ReactiveEffect ͷ࣮ߦΛޮԽ
• ৽͘͠෦ API Ͱ͋Δ pauseSchedulingɺ resetScheduling ΛՃ • ͦΕʹΑͬͯɺReactiveEffect ͷ࣮ߦεέδϡʔϦϯ
άΛఀࢭͨ͠ΓɺϦηοτͯ͠Γ͢Δ͜ͱͰɺεέ δϡʔϦϯάΛࡉ੍͔͘ޚ͍ͯ͠Δ ͖Ίࡉ͔ͳεέδϡʔϦϯάௐ
ϕϯνϚʔΫ݁Ռ https://github.com/vuejs/core/pull/5912#issuecomment-1748985641
• ϝϞϦ༻ྔͷվળ: ༻ྔ50%Ҏ্ݮ • ୯Ұ ref + ෳ effect (computed):
+118%~185% ͪͳΈʹ 3.4 ϦϦʔεޙվળଓ͍͍ͯΔ https://github.com/vuejs/core/pull/10397
ഇࢭػೳ 🙅⚠
άϩʔόϧ JSX ໊લۭؒ
3.4 ͔ΒάϩʔόϧͰͳ͘ͳͬͨ • React ͕ଘࡏ͢Δ։ൃϓϩδΣΫτʹ͓͍ͯίϯϑϦ Ϋτ͢ΔͨΊɺVue ͱڞଘͰ͖ΔΑ͏আͨ͠ https://github.com/vuejs/core/blob/98793a05a643e07baefef637ab6e7033aedcf8db/packages/vue/jsx.d.ts
3.4 ʹҠߦ͢Δ࣌ʹ JSX (TSX) Λ͏ํ๏ • tscon fi g ͷ
jsxImportSource ʹ ‘vue’ Λઃఆ
3.4 ʹҠߦ͢Δ࣌ʹ JSX (TSX) Λ͏ํ๏ • ͘͠ɺ ϑΝΠϧ͝ͱͷઌ಄ʹ
/* @jsxImportSource vue */ ΛՃ
3.4 ʹҠߦ͢Δ࣌ʹ JSX (TSX) Λ͏ํ๏ • طଘͷίʔυʹ JSX.Element ͳͲͷάϩʔόϧͳ JSX
໊લۭؒʹґଘ͢Δ߹ɺͦͷίʔυʹ “import ‘vue/jsx’ “ ΛՃ͢Δ https://github.com/intlify/vue-i18n-next/pull/1661
ͪͳΈʹ ͜ΕഁյతมߋͰͳ͍ͷʁ 🤔
ܕఆٛͷมߋ semver ͷΤοδέʔεʹͨΔ • Vue ͷόʔδϣχϯά ϙϦγʔ semver ͩ ͕ɺ͍͔ͭ͘ྫ֎͕͋
Δ • ͜ͷέʔε TypeScript ͷܕఆٛͷ ΤοδέʔεʹͨΔ ͷͰഁյతมߋʹ֘ ͠ͳ͍ https://ja.vuejs.org/about/releases#semantic-versioning-edge-cases
Reactivity Transform
• 3.2 Ͱ࣮ݧతػೳͱͯ͠ೖ͕ͬͨ 3.3 ͰඇਪΛΞ φϯε Reactivity Transform https://ja.vuejs.org/guide/extras/reactivity-transform.html#reactivity-transform
• લճͷ v-tokyo#18 ͷεϥΠυͰ·ͱΊ͍ͯΔͷͰ ؾʹͳΔํɺͦͪΒΛࢀߟʹʂ ഇࢭ͢Δཧ༝ https://speakerdeck.com/kazupon/vue-dot-jsekosisutemudong-xiang-2023?slide=27
app.con fi g.unwrapInjectedRef
app.con fi g.unwrapInjectedRef ͱԿʁ • 3.2 ҎલͰ Composition API Λͬͯ
Provide / Inject ͨ͠ ࣌ɺςϯϓϨʔτͰ `.value` ͕ͳ͍ͱಈ͔ͳ͍͕͋ͬͨ • ͦͷղܾҊͱͯ͠ΦϓγϣϯϑϥάͰճආͰ͖ΔҰ࣌తʹ ఏڙ͞ΕͨιϦϡʔγϣϯ https://github.com/vuejs/core/issues/4196
• 3.3 Ͱఏڙ͞Εɺ मਖ਼͞ΕͨͨΊɺͦ Εͱಉ࣌ʹ deprecated ѻ͍ • ͳͷͰެࣜυΩϡϝϯ τʹࡌΒͳ͔ͬͨ
• ϦϦʔεͷஈ֊Λܦ ͯ 3.4 Ͱআʹͳͬͨ https://github.com/vuejs/core/commit/561e210157874b216efc1c17be701a6a81c4383b ໋ʹऴΘͬͨݬͷΦϓγϣϯ
vnode ϓϦϑΟοΫε ʹΑΔ ΠϕϯτϦεφʔ
vnode ϓϦϑΟΫεΑΔΠϕϯτϦεφʔͱԿʁ • Vue Ͱ v-on Ͱ Virtual DOM ϨΠϠʔͷϥΠϑ
αΠΫϧΠϕϯτΛ Hook Ͱ͖ΔΠϕϯτϋ ϯυϥʔΛ͏͜ͱ͕ Ͱ͖Δ
ࠓճมߋରͱͳΔ VNode ϥΠϑαΠΫϧΠϕϯτ • vnode-before-mount • vnode-mounted • vnode-before-update •
vnode-updated • vnode-before-unmount • vnode-unmounted runtime-core.d.ts Ͱఆٛ͞Ε͍ͯΔܕఆٛͷHook
ϓϨϑΟοΫε͕ `vnode` Ͱͳ͘ `vue:`ʹมߋ • มߋ 3.3 Ͱ࣮͞Ε͓ͯΓɺͬͨ߹ deprecate ͳܯࠂ͕ग़ྗ͞ΕΔ
ϓϨϑΟοΫε͕ `vnode` Ͱͳ͘ `vue:`ʹมߋ • 3.4 Ͱͬͨ߹ɺΤϥʔ͕ग़ྗ͞ΕͯϏϧυͰ͖ͳ ͍Α͏ʹͳ͍ͬͯΔ
v-is σΟϨΫςΟϒ
Vue 3 ʹ͓͚Δ v-is σΟϨΫςΟϒ • DOM Ͱఆٛ͞ΕͨςϯϓϨʔτʹ͓͍ͯɺDOM ཁૉΛ Vue
ίϯ ϙʔωϯτʹஔ͖͍͑ͨ࣌ʹ͏ • is ଐੑ Web Components ͷ༷ʹ४ڌͯ͠ΧελϜཁૉͷΓସ ͑ʹ͏ • v-is ʹࢦఆ͢Δ JavaScript จࣈྻϦςϥϧʹ͢Δඞཁ͕͋ͬͨ https://github.com/vuejs/rfcs/blob/master/active-rfcs/0027-custom-elements-interop.md
3.4 Ҏ߱ v-is શʹഇࢭ • 3.3 Ͱ v-is σΟϨΫςΟϒ͔Β ‘vue:’
ϓϨϑΟοΫε͖ Ͱ Vue ίϯϙʔωϯτΛ is ଐੑʹ༻͢ΔΑ͏มߋ • is ଐੑʹ౷߹͞Εͨ͜ͱʹΑΓ is ଐੑͱ v-is Λ͍͚ Δೝෛՙ͕ݮͬͨ
·ͱΊ
Vue 3.4 • Vue 3.4 ͰϦϦʔε͞Εͨػೳͱվળɺͦͯ͠ഇࢭ ػೳʹ͍ͭͯͨ͠ • v-bind লུه๏ɺde
fi neModel ਖ਼ࣜαϙʔτΞϓ Ϧͷ։ൃੜ࢈ੑΛߴΊͯ͘Δ • ϋΠυϨʔγϣϯϛεϚονใͷվળΤϥʔ ίʔυϦϑΝϨϯεͷఏڙɺσόοάΛॿ͚ͯ͘ ΕΔ
Vue 3.4 • ίϯύΠϥύϑΥʔϚϯεͷվળɺίϯύΠϧ(Ϗ ϧυ)͕࣌ؒॖ͞ΕΔͨΊɺ։ൃ࣌ͷ։ൃੜ࢈ੑ ɺσϓϩΠͷࡍɺσϓϩΠ࣌ؒΛॖͤͯ͘͞Ε Δ • ϦΞΫςΟϒγεςϜͷվળύϑΥʔϚϯε͕վ ળ͞Ε͍ͯΔͨΊ
3.4 ʹΞοϓάϨʔυ͢Δ͚ͩͰ Vue ΞϓϦͷύϑΥʔϚϯεߴΊͯ͘ΕΔ
Vue 3.4 • 3.4 Ͱ͍͔ͭ͘ػೳ͕আ͞ΕΔ • আ͞ΕΔػೳɺجຊ 3.3 Ͱ࣮͞Ε͓ͯΓɺ ͍ͬͯΔ߹ɺܯࠂΛग़ྗ͍ͯ͠Δɻ
·ͨɺ͍͍ͨ߹ସํ๏ఏڙ͍ͯ͠Δ • ͳͷͰɺ3.4 ʹҠߦ͢Δࡍ͍͖ͳΓ 3.4 ʹΞοϓ άϨʔυ͢ΔͷͰͳ͘ɺ3.3 Λհͯ͠ϚΠάϨʔ γϣϯ͓ͯ͘͠ͱεϜʔζʹ 3.4 ʹҠߦ͘͢͠ ͳ͍ͬͯΔ
Thank You! ❤