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。

1. strip types ͱ storage Yosuke Furukawa @tng43 2024/8/8
2. X: @yosuke_furukawa GitHub: yosuke-furukawa
3. CFP ืूதʂʂʂʂʂ
4. strip types / storage • Node.js ͷ৽͍͠ػೳ͕2ͭ௥Ճ͞Εͨ • strip types v22.6.0 ~ • storage v22.4.0 ~
5. strip types • ܕΛιʔείʔυ͔ΒҾ͖ൈ͍ͯ TypeScript ϑΝΠϧΛ JavaScript ϑΝΠϧ ʹม׵ͨ͠͏͑Ͱ࣮ߦ͢Δͱ͍͏΋ͷ • ͜ΕͰ TypeScript ͷϑΝΠϧΛʢҰఆͷ੍໿৚݅Խʹ͓͍ͯ͸ʣͦͷ··࣮ ߦͰ͖ΔΑ͏ʹͳͬͨɻ • Ұఆ৚݅: enum, namespace, decorator ͳͲͷػೳʹؔͯ͠͸ܕΛऔΓআ͘ ͚ͩͰ͸ͳ͘ɺผίʔυΛੜ੒͢Δ΋ͷͳͷͰ͜͜Ͱ͸αϙʔτର৅֎
6. strip types • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ࢍ • ૉ੖Β͍͠ʂʂʂʂ TypeScript ࠷ߴʂʂʂʂ • ΍ͬͺΓͶɺͦͷ··ಈ͘ͷͬͯྑ͍ΑͶ • Bun, Deno ͱ͔΋ಉ͡ػೳΛఏڙͯ͠Δ͠ɺ͜ΕͰTypeScriptαϙʔτ Ͱʮ͋Ε͕Ͱ͖ͳ͍ɺ͜Ε͕Ͱ͖ͳ͍ʯͱݴΘΕΔ͜ͱ͕ͳ͍Ͷ
7. strip types • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ൱ • ʮͨͩ͊ʔʔʔʔʔʂʂʂʯ • ʮ͍΍ɺܕνΣοΫ͕ͳ͍ͷʹTypeScriptαϙʔτͱ͔ݴͬͯྑ͍Θ͚ ແ͍ͩΖʯ • ͪͳΈʹɺtscon f igͱ͔΋·ͩͳ͍ɻ
8. strip types • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ࢍ • ͍΍Ͱ΋ɺDeno΍Bun΋ҰԠstrip͢Δ͚ͩͰ͢Αɻ • Node.js΋ͦΕ͚ͩͰ͍͍ͷͰ͸ʁ • ※ ݫີʹݴ͏ͱDeno͸νΣοΫ͸ΦϓγϣϯͰͯ͘͠ΕΔ
9. strip types • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ൱ • tscon f ig.json͕αϙʔτ͞Εͳ͍ͬͯɺඍົͳͱ͜ΖͰಈ͔ͳ͔ͬͨΓ͢ ΔͰʁ • ֦ுࢠɺϑΝΠϧύεɻɻɻ • ͋ͱ tsc ͰͷνΣοΫ͕ͳ͍ͷʹ TS αϙʔτͬͯ • ݴͬͪΌ͏ͷ͸ݫ͍ͬͯ͠
10. strip types • uhyo ͞ΜͷεϥΠυͷ͜ͷลΓΛࢀߟʹɻ https://speakerdeck.com/uhyo/tscon f ig-dot-jsonnoshe-ding-wojian-zhi-sou- hurontoendoxiang-ke-2024xia
11. 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
12. storage • local storage • session storage • sqlite • ͜ΕΒ͕ೖͬͨ
13. storage // ͜Μͳͷ͕ಈ͘ localStorage.setItem("foo", 1); console.log(localStorage.getItem("foo")); // node --experimental-webstorage --local- storage-file="hoge"
14. storage • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ࢍ • ศརͦ͏ʂʂʂʂʂ • ΍ͬͺͶɺbrowserͱͷޓ׵ੑΛ্͛Δͷ͸Node.jsʹͱͬͯ͸ॏཁͩΑ Ͷʂʂʂʂ • ؆୯ʹϑΝΠϧΛอଘͰ͖ΔΑ͏ʹͳΔͷ࠷ߴʂʂ
15. storage • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ൱ • ʮͨͩ͊͋͋͋͋͋ʔʔʔʔʔʂʂʂʂʂʯ • ʮ͍͍͍͍͍ΒͶ͑͑͑͑͑͑͑͑͑͑͑͑͑͑ʂʂʂʂʂʂʯ • syncͰอଘ͞ΕΔσʔλʹྑ͞Λશ͘ײ͡ͳ͍ • ·ͩasyncʹͳΔͳΒΘ͔ΔɻͰ΋ͦΕͳΒશ͘ผͷ֓೦Ͱ AsyncLocalStorage ͱ͍͏API͕͋Γɺ༻ҙ͠Α͏ʹ΋طʹऔΒΕͯΔɻ(※Θ͔Γʹ͍͘ͱࢦఠ͕͋ͬ ͨͨΊ௥ه)
16. storage • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ࢍ • ͑ɺͰ΋Bun͸sqlite࠷ॳ͔Βೖͬͯ·͢Α • cloud f lare workersͱ͔ʹ΋KV Storage͕͋Δ • खܰʹ࢖͑ΔετϨʔδ͸΄͍͠Ͱ͠ΐʁ
17. storage • ͜ͷ݅ʹରͯ͠ͷҰਓࢍ൱ • ൱ • खܰʹϑΝΠϧʹอଘͰ͖Δࣄ͕ϒϩοΩϯάͳAPIʹͳΓɺͦΕ͕໰୊ ͔ͩͬͨΒNode.js͸ඇಉظΛத৺ʹൃల͖ͯͨ͠ͷͰ͸ͳ͍͔ • localStorage͸ͱ΋͔͘ɺsessionStorageͷsession͸ͨͩͷάϩʔόϧ ϝϞϦͳͷͰɺάϩʔόϧม਺ͱಉٛͰ͸ʁϝϞϦϦʔΫ͸ʁʁʁ
18. storage • ҙݟ • ͍ΒͶʔͱ͸ࢥ͕ͬͨɺԿ΋χʔζ͕ͳ͍Θ͚Ͱ͸ͳ͍ • ಛʹͳΜͱͳ͘࠷ۙ͸खܰετϨʔδͱͯ͠sqliteΛ࠾༻͢ΔྲྀΕ͕૿͑ͯ Δ • ݸਓతʹ͸࢖Θͳ͍͕ɺͦ͏͍͑͹͜͏͍͏ͷ͋ͬͨͳͱೝ͓ࣝͯ͘͠ ͱɺͳΜ͔͋ͬͨ࣌ʹΤεέʔϓϋονతʹ࢖͑Δ͔΋͠Εͳ͍
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20. Node.jsʹݶΒͣ • ͜Εͬͯ Node.js ʹݶΒͳ͍ • ৭Μͳͱ͜ΖͰى͖ͯΔɺweb΋ͦ͏ͩ͠ɺϑϨʔϜϫʔΫ΋ͦ͏ɻ • ͜͏͍͏ͷʹৼΓճ͞Εଓ͚ΔͱɹJavaScript Fatigue ͱݺ͹ΕΔɻ
21. Node.jsʹݶΒͣ • State of JS 2024 ͷ๯಄ʹॻ͍ͯ͋Δ • ๻Β͸ͣͬͱϑϨʔϜϫʔΫ΍ΤίγεςϜʹৼΓճ͞ΕͯΔ • ͦΕΛࢦͯ͠ fatigueʢർฐʣ ʹؕΔ͜ͱ΋͋Δ • ͨͩͦ͏͍͏ early adapter Λ௥͏ඞཁ͸ͳ͍ • ࣗ෼ͨͪͷϖʔεͰ௥͏͜ͱ͕ॏཁͳΜͩ