Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
React Native JSI ソースコードリーディング / React Native JS...
Search
Shoken Fujisaki
October 02, 2021
0
1.4k
React Native JSI ソースコードリーディング / React Native JSI source code reading
React Native Matsuri 2021で発表したスライドです。
https://reactnative-matsuri.com/ja
Shoken Fujisaki
October 02, 2021
Tweet
Share
More Decks by Shoken Fujisaki
See All by Shoken Fujisaki
KitchHike式 React Native 設計チェックポイント / React Native App Design in KitchHike
shoken
0
2k
React Nativeコンポーネントを 公開してわかった3つのこと / React Native Component Library npm published
shoken
0
1.5k
React Native for macOS
shoken
1
1.7k
React Native の E2E テストフレームワーク Detoxの紹介 / React Native E2E Test Detox
shoken
0
2.9k
広告計測してと言われた時にReact Nativeエンジニアが詠む資料 / React Native with AppsFlyer and Firebase Analytics
shoken
3
1.9k
デザイナーからのラブレター デザイナーが本音で話すエンジニアとの新しいカンケイ
shoken
0
1.1k
MongoDB CTO パネルディスカッション / MongoDB CTO panel discussion 2014
shoken
0
770
Featured
See All Featured
Building a Modern Day E-commerce SEO Strategy
aleyda
38
7k
StorybookのUI Testing Handbookを読んだ
zakiyama
27
5.3k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
229
52k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
356
29k
Thoughts on Productivity
jonyablonski
67
4.4k
GitHub's CSS Performance
jonrohan
1030
460k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
28
2.1k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.3k
The Straight Up "How To Draw Better" Workshop
denniskardys
232
140k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
280
13k
Building Better People: How to give real-time feedback that sticks.
wjessup
365
19k
No one is an island. Learnings from fostering a developers community.
thoeni
19
3k
Transcript
3FBDU/BUJWF.BUTVSJ-5 3FBDU/BUJWF +4*ιʔείʔυϦʔσ Οϯά 4IPLFO'VKJTBLJ
ࣗݾհ w 4IPLFO'VKJTBLJ !TIPLFOY w גࣜձࣾΩονϋΠΫ ڞಉۀऀ$50 w
ڞஶ3FBDU/BUJWFʹࢧ͑Β͑Δاۀ w ΩονϋΠΫΤϯδχΞνʔϜͰ ݄ץ3/'FBUVSFT࿈ࡌத IUUQTUFDILJUDIIJLFDPN
ࠓճ+4*ʹͨ͠ ίʔυϦʔσ ΟϯάͰ͢
ΞδΣϯμ 3FBSDIJUFDUVSFͱ+4* +4*ͷιʔείʔυΛಡΉ +4*.PEVMFͷιʔείʔυΛಡΉ
ΞδΣϯμ 3FBSDIJUFDUVSFͱ+4* +4*ؔ࿈ͷιʔείʔυΛಡΉ +4*ΛͬͨϥΠϒϥϦΛಡΉ
#SJEHF $ 4IBEPX5ISFBE :PHB /BUJWF.PEVMFT +BWB0CK$ +4#VOEMF +BWB4DSJQU
+4$ +40/ +40/ ඇಉظΩϡʔ 6*5ISFBE +45ISFBE /BUJWF6* +BWB0CK$ 3FBSDIJUFDUVSFҎલ #SJEHF
#SJEHF $ 4IBEPX5ISFBE :PHB /BUJWF.PEVMFT +BWB0CK$ +4#VOEMF +BWB4DSJQU
+4$ +40/ +40/ ඇಉظΩϡʔ 6*5ISFBE +45ISFBE #SJEHFҰͭͳͷͰϘτϧ ωοΫʹͳΓ͍͢ ඇಉظͰॲཧ͢ΔͨΊɺىಈ࣌ ʹશͯಡΈࠐΉඞཁ͕͋Δ ૄ݁߹ͳඇಉظॲཧͰྑͦ͞͏͕ͩ τϨʔυΦϑ ඇಉظͷͨΊɺύϑΥʔϚϯε ʹͳΔՄೳੑ /BUJWF6* +BWB0CK$ ϨϯμϦϯάߋ৽ʹ#SJEHFɾ +45ISFBEͷ௨՟͕ඞཁ
+4#VOEMF +BWB4DSJQU +45ISFBE 3FBSDIJUFDUVSFҎ߱ /FX"SDIJUFDUVSFͱ+4* +4* +47. 0CKFDUJWF$ +BWB+/*
$
+4#VOEMF +BWB4DSJQU +45ISFBE 3FBSDIJUFDUVSFҎ߱ /FX"SDIJUFDUVSFͱ+4* +4* +47. /BUJWF.PEVMFT
+BWB0CK$ 6*5ISFBE /BUJWF6* +BWB0CK$
+4#VOEMF +BWB4DSJQU +45ISFBE 3FBSDIJUFDUVSFҎ߱ /FX"SDIJUFDUVSFͱ+4* +4* +47. /BUJWF.PEVMFT
+BWB0CK$ 6*5ISFBE /BUJWF6* +BWB0CK$ $ +40/͕ͳ͘ͳͬͨ #SJEHFܦ༝ͷඇಉظॲཧ͔Β ͷಉظॲཧ $ Ͱڞ௨ͷ/BUJWF.PEVMFT ͕ॻ͚ΔΑ͏ʹͳͬͨ -B[ZMPBEJOH͕Մೳʹ
ΞδΣϯμ 3FBSDIJUFDUVSFͱ+4* +4*ؔ࿈ͷιʔείʔυΛಡΉ +4*ΛͬͨϥΠϒϥϦΛಡΉ
݄ʹ+4$͔Β+4*ͷมߋ͕ ίϛοτ͞ΕΔ IUUQTHJUIVCDPNGBDFCPPLSFBDUOBUJWFDPNNJUDEFGCCCBGDBCBCE 3$5$YY#SJEHFͰҎԼͷมߋ มߋલ+4$&YFDVUPS'BDUPSZ มߋޙ+4*&YFDVUPS'BDUPSZ +4$3VOUJNF
+4*&YFDVUPS'BDUPSZ ͱ͍͏ͷ͕ॏཁͦ͏🤔
3$5$YY#SJEHFͰҎԼͷมߋ มߋલ+4$&YFDVUPS'BDUPSZ มߋޙ+4*&YFDVUPS'BDUPSZ +4$3VOUJNF
ݱࡏͷ3$5$YY#SJEHFNN IUUQTHJUIVCDPNGBDFCPPLSFBDUOBUJWFCMPCDEFCECFEFEDBGDGCB3FBDU$YY#SJEHF3$5$YY#SJEHFNN-- 3$5@64&@)&3.&4͕USVFͳΒ )FSNFT&YFDVUPS'BDUPSZ +4*&YFDVUPS3VOUJNF*OTUBMMFS GBMTFͳΒ +4$&YFDVUPS'BDUPSZ
+4*&YFDVUPS3VOUJNF*OTUBMMFS
+4*&YFDVUPS3VOUJNF*OTUBMMFS 🤔
)FSNFT&YFDVUPS'BDUPSZI IUUQTHJUIVCDPNGBDFCPPLSFBDUOBUJWFCMPCFBEBDGDBECBDEECGD3FBDU$PNNPOIFSNFTFYFDVUPS)FSNFT&YFDVUPS'BDUPSZI )FSNFT&YFDVUPS'BDUPSZͷୈҰҾ͕ +4*&YFDVUPS3VOUJNF*OTUBMMFS
3$5+4*&YFDVUPS3VOUJNF*OTUBMMFSNN IUUQTHJUIVCDPNGBDFCPPLSFBDUOBUJWFCMPCFBEBDGDBECBDEECGD3FBDU$YY#SJEHF3$5+4*&YFDVUPS3VOUJNF*OTUBMMFSNN ίʔυΛಡΜͰΘ͔ͬͨ͜ͱ ɾ/BUJWFͱCJOE͍ͯ͠Δ ɾSVOUJNFΛͯ͠ϥοϓͯ͠Δ SVOUJNFʹ)FSNFTͳͲ+BWB4DSJQU&OHJOF ͕ࢀর͞ΕΔɻ +4*+4&OHJOFͷϥούʔɻ
+4*ؔ࿈Ϋϥε w SFBDUOBUJWF3FBDU$PNNPOKTJFYFDVUPSKTJSFBDU+4*&YFDVUPS w SFBDUOBUJWF3FBDU$PNNPOKTJFYFDVUPSKTJSFBDU+4*/BUJWF.PEVMFT
+4*&YFDVUPSDQQ IUUQTHJUIVCDPNGBDFCPPLSFBDUOBUJWFCMPCBBDDCBGFBFE3FBDU$PNNPOKTJFYFDVUPSKTJSFBDU+4*&YFDVUPSDQQ /BUJWF.PEVMF1SPYZ /BUJWF.PEVMFTͷࢀরΛ࣋ͭ
+4*/BUJWF.PEVMFTDQQ IUUQTHJUIVCDPNGBDFCPPLSFBDUOBUJWFCMPCBBDDCBGFBFE3FBDU$PNNPOKTJFYFDVUPSKTJSFBDU+4*/BUJWF.PEVMFTDQQ SVOUJNFHMPCBM HFU1SPQFSUZ"T'VODUJPO SVOUJNFHMPCBM HFU1SPQFSUZ"T0CKFDU Λݺͼग़ͯ͠࡞ͨ͠NPEVMFΛฦ͢
+4#VOEMF +BWB4DSJQU +45ISFBE +4* +47. /BUJWF.PEVMFT +BWB0CK$ 6*5ISFBE
/BUJWF6* +BWB0CK$ $ ͜͜·ͰಡΜͩίʔυ KTJ3VOUJNFΦϒδΣΫτ +4*&YFDVUPS +4*/BUJWF.PEVMFT )FSNFT +4$ )FSNFT&YFDVUPS'BDUPSZ +4$&YFDVUPS'BDUPSZ 3$5+4*&YFDVUPS3VOUJNF*OTUBMMFS KTJDQQ +4*%ZOBNJDDQQ SVOUJNFHMPCBM TFU1SPQFSUZ SVOUJNFHMPCBM HFU1SPQFSUZ
ίϥϜTFU5JNFPVUͷ࣮
SFBDUOBUJWF-JCSBSJFT$PSF5JNFST +45JNFSTKT /BUJWF5JNJOHͱ
SFBDUOBUJWF-JCSBSJFT$PSF5JNFST /BUJWF5JNJOHKT 5SVCP.PEVMFʂ
SFBDUOBUJWF3FBDU$PSF.PEVMFT 3$55JNJOHNN TFU5JNFPVUͰΘΕΔDSFBUF5JNFSͷ J04ωΠςΟϒ࣮
TFU5JNFPVU5VSCP.PEVMFԽࡁΈ
ΞδΣϯμ 3FBSDIJUFDUVSFͱ+4* +4*ͷιʔείʔυΛಡΉ +4*.PEVMFͷιʔείʔυΛಡΉ
DSBGU[EPH͞ΜͷSFBDUOBUJWFRVJDLCBTF ͷίʔυΛಡΉ IUUQTHJUIVCDPNDSBGU[EPHSFBDUOBUJWFRVJDLCBTF
IUUQTUFDILJUDIIJLFDPNFOUSZSFBDUOBUJWFGFBUVSFT •React NativeͷύϑΥʔϚϯεͱɺNULLจࣈΛؚΉόΠφϦจࣈྻΛॲཧͰ͖ͳ͍՝ •base64 ͰΤϯίʔυ͞Εͨը૾σʔλΛJS ͔ΒReact Native ϒϦοδΛհͯ͠WebView ʹ͢ͷ Ͱ͕͔͔࣌ؒΔ
•C++ ͰJSI ωΠςΟϒϞδϡʔϧΛ࡞ͨ͠ •JSI Λ༻͢Δ͜ͱʹΑΓɺJavaScript C++ ϗετΦϒδΣΫτͷࢀরΛอ࣋͠ɺϝιουΛݺ ͼग़͢͜ͱ͕Ͱ͖Δɻ͜ΕʹΑΓɺઌʹड़ͨNULLจࣈͷΛ࠷ऴతʹճආͰ͖ͨɻ
͜ͷลΓͷίʔυΛಡΉ
DQQCBTFI CBTF@FODPEFCBTF@EFDPEFͳͲͷ ͕ؔએݴ͞Ε͍ͯΔɻ࣮CBTFDQQ
DQQSFBDUOBUJWFRVJDLCBTFDQQ ࣮ࡍͷ+4*όΠϯσΟϯάॲཧɻ +BWB4DSJQU͢ΛKTJ7BMVFͱͯ͠࡞ JOTUBMM#BTFؔͷ࣮ +BWB4DSJQUͷάϩʔόϧ +BWB4DSJQUͰ͑ΔϓϩύςΟʢؔʣ
JPT2VJDL#BTFNN +4*όΠϯσΟϯάެ։༻ʹ 3FBDU3$5#SJEHF 1SJWBUFϔομʔϑΝΠϧΛΠϯϙʔτ DYY#SJEHFSVOUJNFͷࢀরΛऔಘɻ $ ίʔυͰૢ࡞༻ͷ+BWB4DSJQU7BMVFTΛ ࡞͢ΔͨΊʹඞཁͳSVOUJNFΦϒδΣΫτ SVOUJNFΛJOTUBMM#BTFؔʹ͠
ͯɺ+4*όΠϯσΟϯάΛ࡞
JOEFYUTͰؔόΠϯσΟϯάΛએݴ DQQͰKTJ3VOUJNFHMPCBM TFU1SPQFSUZ ͨؔ͠ FYQPSUGVODUJPO
"QQUTYͰJNQPSU FYQPSUͨ͠GVODUJPO
+4#VOEMF +BWB4DSJQU +45ISFBE +4* +47. /BUJWF.PEVMFT +BWB0CK$ 6*5ISFBE
/BUJWF6* +BWB0CK$ $ CBTFI DQQ SFBDUOBUJWFRVJDLCBTFI DQQ 2VJDL#BTFI NN ·ͱΊ KTJ3VOUJNFΦϒδΣΫτ +4*&YFDVUPS +4*/BUJWF.PEVMFT )FSNFT +4$ )FSNFT&YFDVUPS'BDUPSZ +4$&YFDVUPS'BDUPSZ 3$5+4*&YFDVUPS3VOUJNF*OTUBMMFS KTJDQQ +4*%ZOBNJDDQQ
͝੩ௌ ͋Γ͕ͱ͏͍͟͝·ͨ͠ ΩονϋΠΫςοΫϒϩάͰ 3FBDU/BUJWF࠷৽ใΛ࿈ࡌத IUUQTUFDILJUDIIJLFDPN