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大規模なコードベースの改修のために自作TypeScriptツールを作るメリット
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LINEヤフーTech (LY Corporation Tech)
PRO
August 08, 2024
Technology
3
280
大規模なコードベースの改修のために自作TypeScriptツールを作るメリット
「TSKaigi Mashup #1 フロントエンド」の登壇資料です。
LINEヤフーTech (LY Corporation Tech)
PRO
August 08, 2024
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Transcript
ߵ࢘,B[VTIJ,POPTV େنͳίʔυϕʔεͷվमͷͨΊʹ ࣗ࡞5ZQF4DSJQUπʔϧΛ࡞ΔϝϦοτ 54,BJHJαϒΠϕϯτϑϩϯτΤϯυ
ࣗݾհ ߵ࢘,B[VTIJ,POPTV 9!LB[VTIJLPOPTV -*/&ϠϑʔגࣜձࣾιϑτΣΞΤϯδχΞ ʮ-*/&εΩϚχʯϑϩϯτΤϯυνʔϜͷ ΤϯδχΞϦϯάϚωʔδϟʔɾςοΫϦʔυ
ʮϑϩϯτΤϯυͷେنͳίʔυϕʔεͷվमʯʹ͍ͭͯ͠·͢ 💭ϥΠϒϥϦͷΞοϓάϨʔυɾஔ͖͑ 💭ϓϩμΫτͷϦχϡʔΞϧ
େنͳίʔυϕʔεͷվमͰى͖Δ ࣮ऀ ϨϏϡϫʔ ࠩͷྔ ˠ୯ௐͰࣅͨฤू͕ଓ͖ෛ୲ ظؒʹΘͨΔ࡞ۀ ˠ௨ৗͷ։ൃͱͷཱ྆ͷ͠͞ ࠩͷྔ ˠ࣮࿙Εͷݟམͱ͠ ɹϨϏϡϫʔͷෛ୲
͜ͷͷղܾ͢ΔͨΊɺʮࣗ࡞5ZQF4DSJQUπʔϧʯΛ࡞Γ·ͨ͠
ʮࣗ࡞5ZQF4DSJQUπʔϧʯͱͳʹ͔ʁ let message = 'hello world'; const message = 'hello
world'; ͋ΔҰఆͷϧʔϧͰ5ZQF4DSJQUϑΝΠϧΛฤू্͠ॻ͖͢Δͷ 🛠
ʮࣗ࡞5ZQF4DSJQUπʔϧʯͰͬͨ͜ͱ ର 5ZQF4DSJQU3FBDUͷίʔυϕʔε ίϯϙʔωϯτϥΠϒϥϦͷϦϓϨΠε ࣮ݱͨ͜͠ͱ ϓϩδΣΫτͰࢀর͕ͳ͘ͳͬͨίϯϙʔωϯτΛআ
ʮࣗ࡞5ZQF4DSJQUπʔϧʯʹΑͬͯͨΒ͞ΕͨϝϦοτ ࣮ऀ ϨϏϡϫʔ ୯ௐͳมߋ͕ଓ͘͜ͱʹΑΔ ϛεɾ࿙Εͷݮগ มߋͷΞϓϩʔνΛ ͍Ζ͍Ζͱࢼ͢ίετͷԼ ϨϏϡʔର͕ʮࠩʯ͔Β ʮࠩΛੜ͢ΔࠩʯʹมԽ ˠෛ୲͕ݮ
ίʔυΛૢ࡞͢Δ΄͔ͷํ๏ͱͷൺֱ regex ̋खܰ͞ ʷෳࡶͳૢ࡞ͷ࣮ ̋ίʔυͷߏʹ جͮ͘มߋ ˚ϑΝΠϧ͝ͱͷใ ͔͠ར༻Ͱ͖ͳ͍ ̋υΩϡϝϯτɾࢀߟ ʹͳΔࢿྉ
̋ϓϩδΣΫτͷߏ ʢࢀরؔͳͲʣʹج ͮ͘มߋ ̋ܕใͷར༻ ˚υΩϡϝϯτɾࢀߟ ʹͳΔࢿྉ
πʔϧΛ࡞Δ্ͰͷϙΠϯτ పఈతͳݸผ࠷దԽ ˠ൚༻తͳπʔϧΛ࡞ΒͣɺϓϩδΣΫτͷίʔυͷύλʔϯ͚ͩཏ͢Δ ͷࣗಈԽ ˠΓͷ%SBGU13Λݟͳ͕ΒखಈͰରԠ
5ZQF4DSJQUΛͬͯίʔυΛૢ࡞ͯ͠ΈΑ͏ʂ TypeScript API ts-morph ʷυΩϡϝϯτͷෆ ˚USBOTGPNFSΛ͏ͱϑΥʔϚο τ͕ଛͳΘΕΔ ̋ෳࡶͳૢ࡞ 5ZQF4DSJQU"1*ͷ ϥούʔϥΠϒϥϦ
̋൚༻తͳૢ࡞Λཏ ̋υΩϡϝϯτ͕ॆ࣮ ̋ϑΥʔϚοτ͕ҡ࣋͞ΕΔ ˚ෳࡶͳૢ࡞ import ts from 'typescript';
͍͞͝ʹ w ʮࠩ࡞Γʯ͔ΒʮࠩΛੜ͢Δࠩ࡞Γʯͷస w 044Խ w HJUIVCDPNMJOFUTSFNPWFVOVTFE
ʮࣗ࡞5ZQF4DSJQUπʔϧʯΛ࡞ͬͯେنͳվमΛΒͤ·͠ΐ͏ʂ
5IBOLZPV