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社内TypeScript勉強会を開催した話
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hy094
September 08, 2022
Technology
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社内TypeScript勉強会を開催した話
hy094
September 08, 2022
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Transcript
ࣾTypeScriptษڧձΛ։࠵ͨ͠ ҏ౻ඩզ • 2022 9 ݄ 8 1
ࣗݾհ ҏ౻ ඩզʢͻΐ͏͕ʣ ߴߍ→େֶʢจܥʣ →20204݄ גࣜձࣾϥΫε৽ଔೖࣾ ݱࡏ ָָిࢠอଘͷϑϩϯτΤϯυΛ ओʹ։ൃ͍ͯ͠·͢ʂ 2
ܦҢ ςοΫϦʔυͷํ͔Βɺ ʮଞαʔϏεͷΤϯδχΞ(BEΤϯδχΞ)͕JavaSctipt͔ΒTypeSctipt ͷҠߦΛݕ౼͍ͯ͠ΔͷͰɺษڧձΛ։࠵ͯ͠΄͍͠ʯ ͱ͍ͬͨґཔ͕ࢲͱ1ޙഐT܅ͷ2ਓʹɻ 3 ීஈ͍ͬͯΔ͚Ͳɺ આ໌Ͱ͖ΔఔͰͳ͍ɾɾɾ
ࡾछͷਆث ݸਓత TypeScriptٕज़ॻ “ࡾछͷਆث” ࢿྉ࡞ͷࡍʹࢀߟʹ͍͖ͤͯͨͩ͞·ͨ͠ 1. ϓϩάϥϛϯάTypeScript 2. ϓϩΛࢦ͢ਓͷͨΊͷTypeScriptೖ 3.
αόΠόϧTypeScript 4
2िؒఔͰ্͛ͨɻ લΛࢲɺޙΛT܅ͱͷ୲Ͱ্͛ͨɻ ࣍ҎԼͷ௨ΓɻʢฐࣾϒϩάͰࢿྉશฤެ։͍ͯ͠·͢↓ʣ 5 https://tech-blog.rakus.co.jp/entry/20220822/typescript
։࠵ޙΞϯέʔτ ࢀՃऀͷ8ׂ͕TypeScript ໊લ͘Β͍͔͠Βͳ͍ or ಡΊ͢Δ ͱ͍ͬͨఔ શମతʹқదͳൣғͩͬͨͱࢥ͍·͢ 6
ࢀՃऀͷ(Ұ෦ൈਮ) - ͝આ໌ͷཻ͕େ͖͗ͣ͢খ͗ͣ͢͞ɺ࣌ؒͰTypeScriptʹର ͢Δཧղ͕άοͱਂ·Γ·ͨ͠ɻ͋Γ͕ͱ͏͍͟͝·͢ɻ - ϝϯόʔ͕࠷ॳʹཧղ͖͕͘͢ཏ͞Ε͍ͯͯ࠷ॳͷҰา ʹΑ͍ͱײͨ͡ - ڥߏஙʹ͍ͭͯ͏গ͠ਂ͘ฉ͍ͯΈ͔ͨͬͨͰ͢ɻ →
શମతʹʮྑ͔ͬͨʯͱͷ͕ଟ͔ͬͨͰ͢ɻ 7
͋Γ͖ͨΓͳײͰ͕͢ɺࣗͷֶͼʹͳͬͨษڧձͰͨ͠ɻ ࢿྉ࡞ʹͨͬͯΒͳ͍ߏจͳͲͷൃݟ͋Γ·ͨ͠ɻ →func?.()ʢΦϓγϣφϧνΣΠχϯάʣ ͰؔͷଘࡏνΣοΫͭͭ͠ݺͼग़͕͠Ͱ͖Δ ͳͲ ૯ׅ 8