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Ryotaro Onoue
April 02, 2025
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Dart WebAssemblyを使ったWeb API on Cloudflare Workers
Ryotaro Onoue
April 02, 2025
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Transcript
2025.04.02 Dart WebAssemblyΛͬͨ Web API on Cloudflare Workers Ryotaro Onoue
(͙͙) Flutter Tokyo #6
0. whoami - ඌ্ ྒྷଠ࿕ (͓ͷ͏͑ Γΐ͏ͨΖ͏) - גࣜձࣾ
ΏΊΈ 2023৽ଔ - Flutter Ϧʔυ(ϚΠελʔΤϯδχΞ) - FlutterKaigi - 2023: ొஃ & ελοϑ(WebαΠτνʔϜ) - 2024: ελοϑ (WebαΠτϦʔμʔ & ν έοτγεςϜ) - 2025: ελοϑ (ΠϯϑϥνʔϜϦʔμʔ)
0. whoami - EQMonitor ͱ͍͏ؔ࿈ͷΞϓϦ έʔγϣϯΛݸਓ։ൃ͍ͯ͠·͢ - Flutter -
Φʔϓϯιʔε - https: / / github.com/YumNumm/ EQMonitor - DBSupabase CloudΛ༻த - API(BFF)ͱͯ͠Cloudflare WorkersΛڬΜͰ͍·͢ - (࠷ۙߋ৽ΛαϘ͍ͬͯΔ) - (4݄தʹΞοϓσʔτΛެ։͍ͨ͠)
ࠓͷ͓͠ͳ͕͖ 1.[લ] Cloudflare ͱ Dart Wasmʹ͍ͭͯ 2.σϞϓϩάϥϜͷ֓ཁ + ྲྀΕʹ͍ͭͯ
3.ʮDartΛCloudflare WorkersͰಈ͔͢ʯͷ᠘ 4.[ޙ] ϥΠϒσϞ 5.·ͱΊ
1. Cloudflare ͱ WASMʹ͍ͭͯ > ʮͲ͜Ͱͭͳ͕ΔੈքʯͷͨΊͷΫϥυ
> ʮͲ͜Ͱͭͳ͕ΔੈքʯͷͨΊͷΫϥυ 1. Cloudflareͱ? https: // www.cloudflare.com/ja-jp/what-is-cloudflare/
> ʮͲ͜Ͱͭͳ͕ΔੈքʯͷͨΊͷΫϥυ 1. Cloudflareͱ? - Developer Tools https: //
developers.cloudflare.com/products/
αʔόϨεͷ࣮ߦڥ - Cloudflare Workers 1. Cloudflareͱ? -αʔόϨε!? ཧαʔόͳ͍ͷ!? -
͍͍͑ɺ͋Γ·͢ - Cloudflare͕༗͢ΔɺΤοδ࣮ߦڥͰJavaScriptΛ࣮ߦ - AWSͷLambda@Edge, GCPͷCloud Runͱࣅͨίϯηϓτ - Cloudflareͷ৭ΜͳαʔϏεͱ࿈ܞ -͔ܹ҆͠! - Workers Free: 10ສreq/day(10msͷCPU) - Workers Paid: 1000ສreq/month free + $0.3/100ສreq - 3000ສ msͷCPU free + $0.02/100ສms CPU - > ͜͜Ͱ DartΛಈ͔ͯ͠APIΛ࡞Γ͍ͨ! DartΛಈ͔͍͕ͨ͠Ͳ͏͢Ε . . ?
WebAssembly 1. WASMͱ? - WebAssembly(Wasm) - ݴޠඇґଘ, ϙʔλϒϧ, ҆શ,
ߴͳ ԾϚγϯ༻όΠφϦ࣮ߦܗࣜ - C/C + + , C#, JavaScript, Go, Rust, Dartͷݴޠ͔ΒίϯύΠϧՄೳ - ϓϩάϥϜ͕WasmόΠτίʔυ(Ϟδϡʔϧ)ʹίϯύΠϧ͞Εɺ༷ʑͳΞʔΩςΫνϟͷWasm RuntimeͰ࣮ߦՄೳ - ΠϝʔδతʹJVMɻͨͩɺWasmରԠݴޠ͕ଟ͍, αϯυϘοΫεڥͰ͋ΔͳͲ͕ҟͳΔ - V8ΤϯδϯͰWasmΛಈ͔ͤΔ αʔόͳΒwasmtimeͷϥϯλΠϜ͕͑Δ - Ϣʔεέʔε - Unity, Google EarthͷϦονͳॲཧ͕ඞཁͳWebΞϓϦέʔγϣϯ - ϒϥβ্ͷಈը/Իָฤू - ΫϥεϓϥοτϑΥʔϜΞϓϦέʔγϣϯ
WebAssembly 1. Dart(Flutter) ͱ Wasm - Dart - >
WasmStableαϙʔτࡁΈ - ෦తʹJavaScriptʹґଘ͍ͯ͠ΔͨΊɺඇJSڥͷ WebAssembly RuntimeͰಈ͔ͳ͍ - Ex. wasmer, wasmtime - https: / / github.com/dart-lang/sdk/issues/ 53884
WebAssembly 1. Dart(Flutter) ͱ Wasm - Flutter - >
WasmରԠࡁΈ - Wasm (GC)ඇରԠڥ༻ʹJSʹίϯύΠϧ͞Ε Δ - ͜ΕʹΑΓ Flutter WebͷύϑΥʔϚϯε্͕
WebAssembly 1. WASMͱ? - WebAssembly(Wasm) - ܰྔͰ҆શͳ ԾϚγϯ༻ͷόΠφϦ໋ྩܗࣜ -
C/C + + , C#, JavaScript, Go, Rust, Dartͷݴޠ͔ΒίϯύΠϧՄೳ - Javaͷιʔείʔυ͕JavaόΠτίʔυʹίϯύΠϧ͞Εɺ༷ʑͳΞʔΩςΫνϟͷJVM(Java Virtual Machine: JavaԾϚγϯ)Ͱ࣮ߦͰ͖Δͷͱࣅͨײ͡ - ϓϩάϥϜ͕WasmόΠτίʔυ(Ϟδϡʔϧ)ʹίϯύΠϧ͞Εɺ༷ʑͳΞʔΩςΫνϟͷWasm RuntimeͰ࣮ߦՄೳ - ωΠςΟϒฒΈʹߴ dart compile wasm [file] ͰίϯύΠϧͰ͖Δ
WebAssembly 1. WASMͱ? - WebAssembly(Wasm) - ܰྔͰ҆શͳ ԾϚγϯ༻ͷόΠφϦ໋ྩܗࣜ -
C/C + + , C#, JavaScript, Go, Rust, Dartͷݴޠ͔ΒίϯύΠϧՄೳ - Javaͷιʔείʔυ͕JavaόΠτίʔυʹίϯύΠϧ͞Εɺ༷ʑͳΞʔΩςΫνϟͷJVM(Java Virtual Machine: JavaԾϚγϯ)Ͱ࣮ߦͰ͖Δͷͱࣅͨײ͡ - ϓϩάϥϜ͕WasmόΠτίʔυ(Ϟδϡʔϧ)ʹίϯύΠϧ͞Εɺ༷ʑͳΞʔΩςΫνϟͷWasm RuntimeͰ࣮ߦՄೳ - ωΠςΟϒฒΈʹߴ -h Ͱग़ྗ͞Εͳ͍͕ɺ-OʹΑΔ࠷దԽϨϕϧબΔ -O0: ଟ͘ͷ࠷దԽΛແޮԽ -O1: σϑΥϧτͷ࠷దԽ -O2: O1ΑΓڧ͍࠷దԽ (ͨͩ͠ɺ҆શͳ࠷దԽ: minify) -O3: ҉తͳܕνΣοΫΛলུ (ܕΤϥʔͰ Ϋϥογϡ͢ΔՄೳੑUP) -O4: ΑΓੵۃతͳ࠷దԽ https: / / dart.dev/tools/dart-compile
WebAssembly 1. WASMͱ? - WebAssembly(Wasm) - ܰྔͰ҆શͳ ԾϚγϯ༻ͷόΠφϦ໋ྩܗࣜ -
C/C + + , C#, JavaScript, Go, Rust, Dartͷݴޠ͔ΒίϯύΠϧՄೳ - Javaͷιʔείʔυ͕JavaόΠτίʔυʹίϯύΠϧ͞Εɺ༷ʑͳΞʔΩςΫνϟͷJVM(Java Virtual Machine: JavaԾϚγϯ)Ͱ࣮ߦͰ͖Δͷͱࣅͨײ͡ - ϓϩάϥϜ͕WasmόΠτίʔυ(Ϟδϡʔϧ)ʹίϯύΠϧ͞Εɺ༷ʑͳΞʔΩςΫνϟͷWasm RuntimeͰ࣮ߦՄೳ - ωΠςΟϒฒΈʹߴ DartίʔυΛwasmʹίϯύΠϧ
WebAssembly 1. Dart(Flutter) ͱ Wasm - Flutter - >
WasmରԠࡁΈ - Flutter Web (WASM)Ͱಉ༷ʹWASM͕ੜ͞ΕɺରԠڥͰಡΈࠐ·ΕΔ
2. DartΛCloudflare WorkersͰಈ͔͢ ຊฤ
ͭ͘Δͷ 2. DartΛCloudflare WorkersͰಈ͔͢ - ཤྺΛฦ͢API - GET /earthquake/list
- SupabaseʹΞΫηε͠ʹߦ͖ɺ݁ՌΛฦ͢ - Cloudflare Workers্Ͱಈ͔͢ - Dart WasmΛ͍ɺϝΠϯͷίʔυDartͰॻ͘ - Shelf RouterΛ͏ - త - DartΛΤοδڥͰಈ͔͢ݟΛಘΔ - Dart͔ΒHTTP௨৴Ͱ͖Δ͔ΛௐΔ (=Sub-request) - Dart WasmͰಈ͔͢ࡍͷΦʔόʔϔου(ύϑΥʔϚϯεྼԽ)Λܭଌ͢Δ
ͭ͘Δͷ 2. DartΛCloudflare WorkersͰಈ͔͢ - ཤྺΛฦ͢API - GET /v1/earthquake/list
- SupabaseʹΞΫηε͠ʹߦ͖ɺ݁ՌΛฦ͢ - Cloudflare Workers্Ͱಈ͔͢ - Dart WasmΛ͍ɺϝΠϯͷίʔυDartͰॻ͘ - త - DartΛΤοδڥͰಈ͔͢ݟΛಘΔ - Dart͔ΒHTTP௨৴Ͱ͖Δ͔ΛௐΔ (=Sub-request) - Dart WasmͰಈ͔͢ࡍͷΦʔόʔϔου(ύϑΥʔϚϯεྼԽ)Λܭଌ͢Δ (1) Ϣʔβ͔ΒͷϦΫΤετJavaScriptͷ fetchؔʹ͞ΕΔ
ͭ͘Δͷ 2. DartΛCloudflare WorkersͰಈ͔͢ - ཤྺΛฦ͢API - GET /v1/earthquake/list
- SupabaseʹΞΫηε͠ʹߦ͖ɺ݁ՌΛฦ͢ - Cloudflare Workers্Ͱಈ͔͢ - Dart WasmΛ͍ɺϝΠϯͷίʔυDartͰॻ͘ - త - DartΛΤοδڥͰಈ͔͢ݟΛಘΔ - Dart͔ΒHTTP௨৴Ͱ͖Δ͔ΛௐΔ (=Sub-request) - Dart WasmͰಈ͔͢ࡍͷΦʔόʔϔου(ύϑΥʔϚϯεྼԽ)Λܭଌ͢Δ (2)Dart WasmΛىಈ (import mod from “build/main.wasm”;) (2)ϦΫΤετใΛ __ dart_cf_workersม ʹηοτ
ͭ͘Δͷ 2. DartΛCloudflare WorkersͰಈ͔͢ - ཤྺΛฦ͢API - GET /v1/earthquake/list
- SupabaseʹΞΫηε͠ʹߦ͖ɺ݁ՌΛฦ͢ - Cloudflare Workers্Ͱಈ͔͢ - Dart WasmΛ͍ɺϝΠϯͷίʔυDartͰॻ͘ - త - DartΛΤοδڥͰಈ͔͢ݟΛಘΔ - Dart͔ΒHTTP௨৴Ͱ͖Δ͔ΛௐΔ (=Sub-request) - Dart WasmͰಈ͔͢ࡍͷΦʔόʔϔου(ύϑΥʔϚϯεྼԽ)Λܭଌ͢Δ (3) Dart WasmͷmainؔΛ࣮ߦ
ͭ͘Δͷ 2. DartΛCloudflare WorkersͰಈ͔͢ - ཤྺΛฦ͢API - GET /v1/earthquake/list
- SupabaseʹΞΫηε͠ʹߦ͖ɺ݁ՌΛฦ͢ - Cloudflare Workers্Ͱಈ͔͢ - Dart WasmΛ͍ɺϝΠϯͷίʔυDartͰॻ͘ - త - DartΛΤοδڥͰಈ͔͢ݟΛಘΔ - Dart͔ΒHTTP௨৴Ͱ͖Δ͔ΛௐΔ (=Sub-request) - Dart WasmͰಈ͔͢ࡍͷΦʔόʔϔου(ύϑΥʔϚϯεྼԽ)Λܭଌ͢Δ (4) Shelf RouterͰϦΫΤετΛॲཧͯ͠ ݁ՌΛJS ʹฦ͢ + Ϣʔβʹฦ͢
᠘ - Cloudflare Workers͔ΒଞͷAPIΛୟ࣌͘ʹ͍͔ͭ͘᠘͕͋Γ·͢ 1. package:http/http.dart ͷstableόʔδϣϯ Cloudflare WorkersͷFetch
APIʹରԠ͍ͯ͠ͳ ͍ 2. ʮDartΛCloudflare WorkersͰಈ͔͢ʯ ͷ᠘
᠘ 2. DartΛCloudflare WorkersͰಈ͔͢ - Cloudflare Workers͔ΒଞͷAPIΛୟ࣌͘ʹ͍͔ͭ͘᠘͕͋Γ·͢ 1. package:http/http.dart
ͷstableόʔδϣϯ Cloudflare WorkersͷFetch APIʹରԠ͍ͯ͠ͳ ͍ - window.fetch ؔΛୟ͍͍ͯΔ͕ɺCloudflare WorkersϒϥβͰͳ͍ͷͰ window APIͳ͍
᠘ 2. ʮDartΛCloudflare WorkersͰಈ͔͢ʯ ͷ᠘ - Cloudflare Workers͔ΒଞͷAPIΛୟ࣌͘ʹ͍͔ͭ͘᠘͕͋Γ·͢ 1.
package:http/http.dart ͷstableόʔδϣϯ Cloudflare WorkersͷFetch APIʹରԠ͍ͯ͠ͳ ͍ - https: / / github.com/dart-lang/http/pull/1715 Fix browser clients in workers (2025.02.14)
᠘ 2. DartΛCloudflare WorkersͰಈ͔͢ - Cloudflare Workers͔ΒଞͷAPIΛୟ࣌͘ʹ͍͔ͭ͘᠘͕͋Γ·͢ 1. package:http/http.dart
ͷstableόʔδϣϯ Cloudflare WorkersͷFetch APIʹରԠ͍ͯ͠ͳ ͍ - https: / / github.com/dart-lang/http/pull/1715 Fix browser clients in workers (2025.02.14) άϩʔόϧίϯςΩετͷfetch APIΛୟ͘Α͏ʹͳͬͨ
᠘ - Cloudflare Workers͔ΒଞͷAPIΛୟ࣌͘ʹ͍͔ͭ͘᠘͕͋Γ·͢ 1. package:http/http.dart ͷstableόʔδϣϯ Cloudflare WorkersͷFetch
APIʹରԠ͍ͯ͠ͳ ͍ - https: / / github.com/dart-lang/http/pull/1715 Fix browser clients in workers (2025.02.14) 2. Cloudflare WorkersͰάϩʔόϧίϯςΩετ͔Β I/Oૢ࡞(Ex. Fetch API)Λୟ͚ͳ͍ 2. ʮDartΛCloudflare WorkersͰಈ͔͢ʯ ͷ᠘
᠘ 2. DartΛCloudflare WorkersͰಈ͔͢ - Cloudflare Workers͔ΒଞͷAPIΛୟ࣌͘ʹ͍͔ͭ͘᠘͕͋Γ·͢ 1. package:http/http.dart
ͷstableόʔδϣϯ Cloudflare WorkersͷFetch APIʹରԠ͍ͯ͠ͳ ͍ - https: / / github.com/dart-lang/http/pull/1715 Fix browser clients in workers (2025.02.14) 2. Cloudflare WorkersͰάϩʔόϧίϯςΩετ͔Β I/Oૢ࡞(Ex. Fetch API)Λୟ͚ͳ͍ υΩϡϝϯτʹॻ͍ͯ͋Δɻ ͕ͨͬͯ͠ɺfetch APIΛάϩʔόϧίϯςΩετ͔Βݺͼग़ͤͳ͍ DartͰ͍͏ͳΒɺάϩʔόϧ͔ؔΒݺͼग़͢ͱΤϥʔʹͳΔ https: / / developers.cloudflare.com/workers/runtime-apis/fetch/
᠘ - Cloudflare Workers͔ΒଞͷAPIΛୟ࣌͘ʹ͍͔ͭ͘᠘͕͋Γ·͢ 1. package:http/http.dart ͷstableόʔδϣϯ Cloudflare WorkersͷFetch
APIʹରԠ͍ͯ͠ͳ ͍ - https: / / github.com/dart-lang/http/pull/1715 Fix browser clients in workers (2025.02.14) 2. Cloudflare WorkersͰάϩʔόϧίϯςΩετ͔Β I/Oૢ࡞(Ex. Fetch API)Λୟ͚ͳ͍ - JS Interop(DartͷJS૬ޓӡ༻ػೳ)ͰؤுΔ - Dart Wasmʹ͢ΦϒδΣΫτͷதʹɺϦΫΤετϋϯυϥʔͰfetch APIΛݺͼग़ؔ͢Λ͢ 2. ʮDartΛCloudflare WorkersͰಈ͔͢ʯ ͷ᠘
᠘ 2. DartΛCloudflare WorkersͰಈ͔͢ - Cloudflare Workers͔ΒଞͷAPIΛୟ࣌͘ʹ͍͔ͭ͘᠘͕͋Γ·͢ 1. package:http/http.dart
ͷstableόʔδϣϯ Cloudflare WorkersͷFetch APIʹରԠ͍ͯ͠ͳ ͍ - https: / / github.com/dart-lang/http/pull/1715 Fix browser clients in workers (2025.02.14) 2. Cloudflare WorkersͰάϩʔόϧίϯςΩετ͔Β I/Oૢ࡞(Ex. Fetch API)Λୟ͚ͳ͍ - JS Interop(DartͷJS૬ޓӡ༻ػೳ)ͰؤுΔ - Dart Wasmʹ͢ΦϒδΣΫτͷதʹɺϦΫΤετϋϯυϥʔͰfetch APIΛݺͼग़ؔ͢Λ͢ JS Dart ϦΫΤετϋϯυϥʔͷؔͱͯ͠ݺͼग़ͤΔΑ͏ʹͳͬͨ
᠘ - Cloudflare Workers͔ΒଞͷAPIΛୟ࣌͘ʹ͍͔ͭ͘᠘͕͋Γ·͢ 1. package:http/http.dart ͷstableόʔδϣϯ Cloudflare WorkersͷFetch
APIʹରԠ͍ͯ͠ͳ͍ - https: / / github.com/dart-lang/http/pull/1715 Fix browser clients in workers (2025.02.14) 2. Cloudflare WorkersͰάϩʔόϧίϯςΩετ͔Β I/Oૢ࡞(Ex. Fetch API)Λୟ͚ͳ͍ - ਖ਼֬ʹɺಉ࣌ʹϦΫΤετΛૹΔͱΤϥʔʹͳͬͨ (͓ͦΒ͘ Dart WasmͷΠϯελϯεΛ͍·Θ͠ ͍ͯΔ͔Β) - JS Interop(DartͷJS૬ޓӡ༻ػೳ)ͰؤுΔ - Dart Wasmʹ͢ΦϒδΣΫτͷதʹɺϦΫΤετϋϯυϥʔͰfetch APIΛݺͼग़ؔ͢Λ͢ - > ղܾ! (ͪͳΈʹɺ2ͭͷόάʹؾ͕͍ͭͨͷ ࠓՈΛग़Δ15લ) 2. ʮDartΛCloudflare WorkersͰಈ͔͢ʯ ͷ᠘
ύϑΥʔϚϯε 2. ʮDartΛCloudflare WorkersͰಈ͔͢ʯ ͷ᠘
ύϑΥʔϚϯε 2. ʮDartΛCloudflare WorkersͰಈ͔͢ʯ ͷ᠘ CPU࣌ؒ(1ϦΫΤετ͋ͨΓͷCPUαΠΫϧ࣌ؒ) ͕10ഒఔଟ͍ Cloudflare Workers͍͕҆
େྔϦΫΤετΛࡹ͘ͱͳΔͱؾʹͳΔ eqapi-dart-edge (TypeScript+Dart Wasm API) EQMonitor༻ͷAPI (TypeScript API) ※ ͨͩ͠ɺࠓճͷAPIͱEQMonitor༻APIͰॲཧ͍ͯ͠Δ༰͕ҟͳΔͨΊ ୯७ൺֱͰ͖ͳ͍͜ͱʹҙ
(ࢿྉ࡞Δͷ໘ʹͳͬͨͷͰ) ͪΐͬͱϥΠϒσϞ - JavaScript͔ΒDart WasmΛىಈ - > ϦΫΤετΛॲཧ -
JSInteropͷ - APIΤϯυϙΠϯτΛՃ - ϩʔΧϧ࣮ߦ & σϓϩΠ
Dart Wasm x Cloudflare Workers ·ͱΊ - DartΛWebAssemblyʹίϯύΠϧͰ͖ΔΑ͏ʹͳͬͨ͜ͱͰɺ༷ʑͳϓϥοτϑΥʔϜͰಈ͔ͤΔΑ͏ʹ ͳͬͨ
- DartͷJSInteropͷ͓͔͛Ͱ Dart͔ΒJSͷࢿ࢈Λݺͼग़͢ͷ؆୯ - Cloudflare Workers্Ͱಈ͔͢͜ͱʹΑΓɺDartΛ͍Web APIΛ࡞Ͱ͖ΔΑ͏ʹͳͬͨ - Dartͷطଘͷࢿ࢈Λ༗ޮ׆༻Ͱ͖Δ - ͨͩ͠ɺ dart:io ʹґଘ͢Δίʔυಈ͔ͤͳ͍ - ΞϓϦέʔγϣϯͱͷAPIܕఆٛΛڞ௨ԽͰ͖ΔͨΊ ͪΐͬͱָʹͳΔ - ͱ͍͑ɺ༷ʑͳน͕͋Γ ProductionͰಈ͔͢ʹෆ͕҆Δ - ಛʹɺWebAssemblyΛڬΉ͜ͱʹΑΔ CPU࣌ؒ+Ϩεϙϯε࣌ؒͷ૿Ճ - DartͰॏ͍ॲཧΛ࣮ߦ͢ΔͷͰ͋Ε ૉͷJavaScriptͰ࣮ߦ͢ΔΑΓߴύϑΥʔϚϯεʹͳΔ Մೳੑ͋Δ (Ex. ը૾ॲཧ) - > ٕज़తʹ݁ߏ໘ന͍ͷͰɺͥͻΈͳ͞Μ DartͰAPIΛΜͰ༡ΜͰΈ͍ͯͩ͘͞
FlutterKaigi 2025 એ - FlutterKaigi 2025ͷελοϑͬͯ·͢ - ΠϯϑϥνʔϜ(νέοτγεςϜɾσʔλϕʔεɾAPI)ͷϦʔμʔͬͯ·͢ -
ࠓͷFlutterKaigi 2025Ͱ νέοτγεςϜͷAPIΛ Dart Λ͍ߏங͢Δ༧ఆͰ͢! - ৄ͍͜͠ͱ·ܾͩΊ͍ͯ·ͤΜ͕ɺࠓճհͨ͠ Cloudflare Workers + Dart WasmΛ͏͔Ͱ͢! - 4.26ʹژͰΠϕϯτΓ·͢ - 2024ͷνέοτγεςϜ + 2025ͷలʹ͍͓ͭͯ͠·͢!
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠! - ࢀߟࢿྉ - https: / / github.com/a-skua/cf_workers.dart -
εϥΠυͷURL - ࠓճ࡞ͨ͠αϯϓϧϓϩάϥϜ - GitHub: https: / / github.com/YumNumm/eqapi-dart-edge - API: https: / / eqapi-dart-edge.yumnumm.workers.dev/ - ໌Ҏ߱ͷͲ͔͜ͷλΠϛϯάͰఀࢭ͠·͢