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Strip Types と Storage
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Yosuke Furukawa
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August 08, 2024
Programming
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Strip Types と Storage
東京Node学園 43時限目で発表した Strip Types と Storage の話です。
Yosuke Furukawa
PRO
August 08, 2024
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Transcript
strip types ͱ storage Yosuke Furukawa @tng43 2024/8/8
X: @yosuke_furukawa GitHub: yosuke-furukawa
CFP ืूதʂʂʂʂʂ
strip types / storage • Node.js ͷ৽͍͠ػೳ͕2ͭՃ͞Εͨ • strip types
v22.6.0 ~ • storage v22.4.0 ~
strip types • ܕΛιʔείʔυ͔ΒҾ͖ൈ͍ͯ TypeScript ϑΝΠϧΛ JavaScript ϑΝΠϧ ʹมͨ͠͏͑Ͱ࣮ߦ͢Δͱ͍͏ͷ •
͜ΕͰ TypeScript ͷϑΝΠϧΛʢҰఆͷ੍݅Խʹ͓͍ͯʣͦͷ··࣮ ߦͰ͖ΔΑ͏ʹͳͬͨɻ • Ұఆ݅: enum, namespace, decorator ͳͲͷػೳʹؔͯ͠ܕΛऔΓআ͘ ͚ͩͰͳ͘ɺผίʔυΛੜ͢ΔͷͳͷͰ͜͜Ͱαϙʔτର֎
strip types • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ࢍ • ૉΒ͍͠ʂʂʂʂ TypeScript ࠷ߴʂʂʂʂ
• ͬͺΓͶɺͦͷ··ಈ͘ͷͬͯྑ͍ΑͶ • Bun, Deno ͱ͔ಉ͡ػೳΛఏڙͯ͠Δ͠ɺ͜ΕͰTypeScriptαϙʔτ Ͱʮ͋Ε͕Ͱ͖ͳ͍ɺ͜Ε͕Ͱ͖ͳ͍ʯͱݴΘΕΔ͜ͱ͕ͳ͍Ͷ
strip types • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ൱ • ʮͨͩ͊ʔʔʔʔʔʂʂʂʯ • ʮ͍ɺܕνΣοΫ͕ͳ͍ͷʹTypeScriptαϙʔτͱ͔ݴͬͯྑ͍Θ͚
ແ͍ͩΖʯ • ͪͳΈʹɺtscon f igͱ͔·ͩͳ͍ɻ
strip types • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ࢍ • ͍ͰɺDenoBunҰԠstrip͢Δ͚ͩͰ͢Αɻ • Node.jsͦΕ͚ͩͰ͍͍ͷͰʁ
• ※ ݫີʹݴ͏ͱDenoνΣοΫΦϓγϣϯͰͯ͘͠ΕΔ
strip types • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ൱ • tscon f ig.json͕αϙʔτ͞Εͳ͍ͬͯɺඍົͳͱ͜ΖͰಈ͔ͳ͔ͬͨΓ͢
ΔͰʁ • ֦ுࢠɺϑΝΠϧύεɻɻɻ • ͋ͱ tsc ͰͷνΣοΫ͕ͳ͍ͷʹ TS αϙʔτͬͯ • ݴͬͪΌ͏ͷݫ͍ͬͯ͠
strip types • uhyo ͞ΜͷεϥΠυͷ͜ͷลΓΛࢀߟʹɻ https://speakerdeck.com/uhyo/tscon f ig-dot-jsonnoshe-ding-wojian-zhi-sou- hurontoendoxiang-ke-2024xia
strip types • TypeScript αϙʔτ͍ͬͯ͏ݴ༿৻ॏʹʂʂʂ // DEMO interface Point {
x: number; y: number; } function logPoint(p: Point) { console.log(`${p.x}, ${p.y}`); } // logs "12, 26" const point = { x: 12, y: 26 }; logPoint(point); // node --experimental-strip-types foo.ts
storage • local storage • session storage • sqlite •
͜ΕΒ͕ೖͬͨ
storage // ͜Μͳͷ͕ಈ͘ localStorage.setItem("foo", 1); console.log(localStorage.getItem("foo")); // node --experimental-webstorage --local-
storage-file="hoge"
storage • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ࢍ • ศརͦ͏ʂʂʂʂʂ • ͬͺͶɺbrowserͱͷޓੑΛ্͛ΔͷNode.jsʹͱͬͯॏཁͩΑ Ͷʂʂʂʂ
• ؆୯ʹϑΝΠϧΛอଘͰ͖ΔΑ͏ʹͳΔͷ࠷ߴʂʂ
storage • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ൱ • ʮͨͩ͊͋͋͋͋͋ʔʔʔʔʔʂʂʂʂʂʯ • ʮ͍͍͍͍͍ΒͶ͑͑͑͑͑͑͑͑͑͑͑͑͑͑ʂʂʂʂʂʂʯ •
syncͰอଘ͞ΕΔσʔλʹྑ͞Λશ͘ײ͡ͳ͍ • ·ͩasyncʹͳΔͳΒΘ͔ΔɻͰͦΕͳΒશ͘ผͷ֓೦Ͱ AsyncLocalStorage ͱ͍͏API͕͋Γɺ༻ҙ͠Α͏ʹطʹऔΒΕͯΔɻ(※Θ͔Γʹ͍͘ͱࢦఠ͕͋ͬ ͨͨΊه)
storage • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ࢍ • ͑ɺͰBunsqlite࠷ॳ͔Βೖͬͯ·͢Α • cloud f
lare workersͱ͔ʹKV Storage͕͋Δ • खܰʹ͑ΔετϨʔδ΄͍͠Ͱ͠ΐʁ
storage • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ൱ • खܰʹϑΝΠϧʹอଘͰ͖Δࣄ͕ϒϩοΩϯάͳAPIʹͳΓɺͦΕ͕ ͔ͩͬͨΒNode.jsඇಉظΛத৺ʹൃల͖ͯͨ͠ͷͰͳ͍͔ • localStorageͱ͔͘ɺsessionStorageͷsessionͨͩͷάϩʔόϧ
ϝϞϦͳͷͰɺάϩʔόϧมͱಉٛͰʁϝϞϦϦʔΫʁʁʁ
storage • ҙݟ • ͍ΒͶʔͱࢥ͕ͬͨɺԿχʔζ͕ͳ͍Θ͚Ͱͳ͍ • ಛʹͳΜͱͳ͘࠷ۙखܰετϨʔδͱͯ͠sqliteΛ࠾༻͢ΔྲྀΕ͕૿͑ͯ Δ • ݸਓతʹΘͳ͍͕ɺͦ͏͍͑͜͏͍͏ͷ͋ͬͨͳͱೝ͓ࣝͯ͘͠
ͱɺͳΜ͔͋ͬͨ࣌ʹΤεέʔϓϋονతʹ͑Δ͔͠Εͳ͍
Node.jsʹݶΒͣ • զʑ৽͍༷͠ɺ৽͍͠ػೳ͕ग़ͯ͘Δͨͼʹʮ΄͍͠ʯͱࢥͬͨΓʮ͍ Βͳ͍ʯͱࢥͬͨΓ͢Δ • ༷Ճ͢Δͷ؆୯Ͱɺӡ༻͢Δͷେมɺআ͢Δͷͬͱେม • ͔ͩΒ৻ॏʹͳΔɺࠓՃ͞ΕͯΔͷશ෦ experimental Ͱ͋Δɻ
• Ճ͞Ε͚ͨͩͰ͜Ε͕߃ٱతʹαϙʔτ͞ΕΔͱࢥͬͯΘΕ͗͢ ͪΌ͏͜ͱ • Ұ୴ͬͯΈͯཧղ͢Δʹͳ͍
Node.jsʹݶΒͣ • ͜Εͬͯ Node.js ʹݶΒͳ͍ • ৭Μͳͱ͜ΖͰى͖ͯΔɺwebͦ͏ͩ͠ɺϑϨʔϜϫʔΫͦ͏ɻ • ͜͏͍͏ͷʹৼΓճ͞Εଓ͚ΔͱɹJavaScript Fatigue
ͱݺΕΔɻ
Node.jsʹݶΒͣ • State of JS 2024 ͷ಄ʹॻ͍ͯ͋Δ • ΒͣͬͱϑϨʔϜϫʔΫΤίγεςϜʹৼΓճ͞ΕͯΔ •
ͦΕΛࢦͯ͠ fatigueʢർฐʣ ʹؕΔ͜ͱ͋Δ • ͨͩͦ͏͍͏ early adapter Λ͏ඞཁͳ͍ • ࣗͨͪͷϖʔεͰ͏͜ͱ͕ॏཁͳΜͩ