実践TypeScriptトークバトル

TypeScript meetup #2, 2019/07/10

Transcript

1. ࣮ફTypeScript
   τʔΫότϧ
   TypeScript meetup #2
   at FiNC Technologies, 2019/7/10
   by FUJI Goro (@__gfx__)
   

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2. ࣗݾ঺հ
   • FUJI Goro (@__gfx__)
   • Bit Journey, Inc. ͰKibelaΛ։ൃͯ͠·͢
   • Kibela: ϑϩʔͱετοΫ྆ํͷ৘ใΛ͍͍ײ͡ʹ
   ूੵ͢ΔͨΊͷࣾ಺޲͚ϒϩά / ΢ΟΩαʔϏε
   • TypeScript, GraphQL·ΘΓΛओʹ΍͍ͬͯΔϑϩϯ
   τΤϯυدΓͷΤϯδχΞͰ͢
   

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3. https://scrapbox.io/gfx/%E3%81%8C%E3%82%93%E3%81%B0%E3%82%89%E3%81%AA%E3%81%84TypeScript_%E5%AE%9F%E8%B7%B5%E7%B7%A8
   

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4. ϨοπτʔΫότϧ
   ҙݟ͕෼͔Εͦ͏ͳࣄฑʹ͍ͭͯͦΕͧΕ͕
   ݟղΛड़΂Δͱ͍͏࣌ؒͰ͢ɻ
   @__gfx__
   @mizchi
   @takepepe
   

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8. ※ strictNullChecks: true ͩͱnullableͳ஋Λ௚
   ઀࢖͑ͣɺNNA (expr!) ͔ nullνΣοΫ͕ඞཁ
   ʹͳΔɻͳ͓NNAΛ཈੍͢Δeslint rule΋͋Δ
   

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9. ※ noImplicitAny: true ͩͱ҉໧ͷanyΛ࢖͑
   ͳ͘ͳΔɻܕఆٛͷͳ͍Ϟδϡʔϧͷimport
   ΋ `// @ts-ignore` ͳ͠Ͱ͸Ͱ͖ͳ͘ͳΔɻ
   

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