swift-developers-japan
main / wasm
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subscript(dynamicMember name: String) -> ((ConvertibleToJSValue...) -> JSValue)? が呼ばれて、thisがレシーバでバインドされるんですが https://github.com/swiftwasm/JavaScriptKit/blob/4b7981bc1b81a1f25e7aca851866d55913657d61/Sources/JavaScriptKit/FundamentalObjects/JSObject.swift#L34-L40 JSFunction になってしまって、JSFunctionのcallAsFunctionで実行されるのでthisがバインドされないんですよね https://github.com/swiftwasm/JavaScriptKit/blob/4b7981bc1b81a1f25e7aca851866d55913657d61/Sources/JavaScriptKit/FundamentalObjects/JSFunction.swift#L21 
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.pkgによるswift-latest.xctoolchainシンボリックリンクの作成、既にシンボリックリンクが存在するとシンボリックリンクが指す先に新しいシンボリックリンクを作ってしまう。 https://github.com/swiftwasm/swift/blob/swiftwasm/utils/darwin-installer-scripts/postinstall#L16 これを避けるためにln -fhs …とかに変えるべき。 
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破壊的変更注意
.define("CMARK_THREADING", to: "0", .when(platforms: [.wasi])) で上書きすればいけるような気もしてきました．
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❯ docker run -it --rm -v $(pwd):/$(basename $(pwd)) -t swift:5.9 /bin/bash root@5aaf21fbf0d1:/# swift experimental-sdk install https://github.com/swiftwasm/swift/releases/download/swift-wasm-5.9.2-RELEASE/swift-wasm-5.9.2-RELEASE-ubuntu22.04_x86_64.artifactbundle.zip Swift SDK bundle successfully downloaded from `https://github.com/swiftwasm/swift/releases/download/swift-wasm-5.9.2-RELEASE/swift-wasm-5.9.2-RELEASE-ubuntu22.04_x86_64.artifactbundle.zip`. swift-wasm-5.9.2-RELEASE-ubuntu22.04_x86_64.artifactbundle.zip is assumed to be an archive, unpacking... Swift SDK bundle at `https://github.com/swiftwasm/swift/releases/download/swift-wasm-5.9.2-RELEASE/swift-wasm-5.9.2-RELEASE-ubuntu22.04_x86_64.artifactbundle.zip` successfully installed. root@5aaf21fbf0d1:/# swift experimental-sdk list 5.9.2-RELEASE-wasm
❯ docker run -it --rm -v $(pwd):/$(basename $(pwd)) -t swift:5.10 /bin/bash root@59c43fdac52e:/# swift experimental-sdk install https://github.com/swiftwasm/swift/releases/download/swift-wasm-5.9.2-RELEASE/swift-wasm-5.9.2-RELEASE-ubuntu22.04_x86_64.artifactbundle.zip Downloading a Swift SDK bundle archive from `https://github.com/swiftwasm/swift/releases/download/swift-wasm-5.9.2-RELEASE/swift-wasm-5.9.2-RELEASE-ubuntu22.04_x86_64.artifactbundle.zip`... Swift SDK bundle archive successfully downloaded from `https://github.com/swiftwasm/swift/releases/download/swift-wasm-5.9.2-RELEASE/swift-wasm-5.9.2-RELEASE-ubuntu22.04_x86_64.artifactbundle.zip`. Swift SDK bundle at `https://github.com/swiftwasm/swift/releases/download/swift-wasm-5.9.2-RELEASE/swift-wasm-5.9.2-RELEASE-ubuntu22.04_x86_64.artifactbundle.zip` is assumed to be an archive, unpacking... Error: gzip: stdin has more than one entry--rest ignored tar: Child returned status 2 tar: Error is not recoverable: exiting now 
❯ swift build --target FoundationEssentials --experimental-swift-sdk 5.9.2-RELEASE-wasm Building for debugging... /Users/iceman/Downloads/swift-foundation-main/.build/checkouts/swift-syntax/Sources/SwiftCompilerPlugin/CompilerPlugin.swift:103:19: error: cannot find 'dup' in scope let inputFD = dup(fileno(stdin)) ^~~ /Users/iceman/Downloads/swift-foundation-main/.build/checkouts/swift-syntax/Sources/SwiftCompilerPlugin/CompilerPlugin.swift:117:20: error: cannot find 'dup' in scope let outputFD = dup(fileno(stdout)) ^~~ /Users/iceman/Downloads/swift-foundation-main/.build/checkouts/swift-syntax/Sources/SwiftCompilerPlugin/CompilerPlugin.swift:124:11: error: cannot find 'dup2' in scope guard dup2(fileno(stderr), fileno(stdout)) >= 0 else { ^~~~ 
enum E { case c(Int) @available(*, unavailable) static func c(_: Int) -> E { fatalError() } } func check(e: E) { switch e { case .c(_): break } } <stdin>:3:42: error: invalid redeclaration of 'c' 1 │ enum E { 2 │ case c(Int) 3 │ @available(*, unavailable) static func c(_: Int) -> E { fatalError() } │ ╰─ error: invalid redeclaration of 'c' 4 │ } 5 │ 
Watcher, bundler, and test runner for your SwiftWasm apps - swiftwasm/carton
./Bundle/index.mjsがこんな感じになってると良いのかな import { SwiftRuntime } from "./JavaScriptKit_resource/index.mjs" export function init() { const importObject = { javascriptkit: SwiftRuntime.importObjects } const { instance } = await WebAssembly.instantiate(..., importObject) return instance.exports } 
Package.swift では real target に [.wasi] と mock target に allPlatforms.except([.wasi]) を指定しておけば Bool のフラグなしで解決する話だったりはしないですか？(ビルド時のターゲット triple で切り替わる感じで) https://github.com/apple/swift-package-manager/issues/4479
Package.swift では real target に [.wasi] と mock target に allPlatforms.except([.wasi]) を指定しておけば Bool のフラグなしで解決する話だったりはしないですか？(ビルド時のターゲット triple で切り替わる感じで) https://github.com/apple/swift-package-manager/issues/4479
[omochi@omochi-mbp swift-react (main *=)]$ swift experimental-sdk list DEVELOPMENT-SNAPSHOT-2024-04-03-a-wasm [omochi@omochi-mbp swift-react (main *=)]$ swift build --triple wasm32-unknown-wasi --build-tests \ -Xswiftc -static-stdlib \ -Xswiftc -Xclang-linker -Xswiftc -mexec-model=reactor \ -Xlinker --export-if-defined=main \ --disable-build-manifest-caching warning: 'swift-algorithms': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target /Users/omochi/github/omochi/swift-react/.build/checkouts/swift-algorithms/Sources/Algorithms/Documentation.docc Building for debugging... In file included from /Users/omochi/github/omochi/swift-react/.build/checkouts/JavaScriptKit/Sources/_CJavaScriptKit/_CJavaScriptKit.c:1: /Users/omochi/github/omochi/swift-react/.build/checkouts/JavaScriptKit/Sources/_CJavaScriptKit/include/_CJavaScriptKit.h:4:10: fatal error: 'stdlib.h' file not found 4 | #include <stdlib.h> | ^~~~~~~~~~ 1 error generated. [0/26] Write swift-version-37CF2ABA3CB73B3C.txt 
$ swift run carton test --environment browser だといけた
throws な事自体はあまり違和感はないかな サーバサイドで普段から大量の async throws にまみれているから・・・ 
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final class JavaScriptKitTests: XCTestCase { func testClosureAsFunction() throws { let clo = JSClosure { (_) in return 7.jsValue } let obj = try JSObject.mustConstruct(from: clo.jsValue) XCTAssertFalse(obj is JSFunction) let fn = clo.asFunction() let ret = try Int.mustConstruct(from: try fn()) XCTAssertEqual(ret, 7) } } extension JSClosure { #if USES_JAVASCRIPT_KIT_MOCK public func asFunction() -> JSThrowingFunction { let fn = native as! JSNativeFunction return JSFunction(native: fn).throws } #else public func asFunction() -> JSThrowingFunction { var buffer: JSValue = Array<Int>([0]).jsValue buffer[0] = self.jsValue let fn = JSFunction.unsafeConstruct(from: buffer[0]) return fn.throws } #endif }
WebMock を実装してて困った。 public class WebEventTarget: JSNativeObject { public init() { } private var listeners: [String: [JSFunction]] = [:] public func addEventListener(_ type: String, _ listener: JSFunction) { var lns = self.listeners[type] ?? [] if lns.contains(listener) { return } lns.append(listener) self.listeners[type] = lns } public func removeEventListener(_ type: String, _ listener: JSFunction) { guard var lns = self.listeners[type] else { return } lns.removeAll { $0 == listener } self.listeners[type] = lns } public func dispatchEvent(_ event: WebEvent) -> Bool { guard let lns = self.listeners[event.type] else { return true } for ln in lns { ln(event) } return true }
public func asFunction() -> JSThrowingFunction { var buffer: JSValue = Array<Int>([0]).jsValue buffer[0] = self.jsValue let fn = JSFunction.unsafeConstruct(from: buffer[0]) return fn.throws }
func testState() throws { struct Content: Component { @State var count = 0 func render() -> Node { return div { "\(count)" button( listeners: [ "click": Function { (ev) in count += 1 } ] ) } } } let body = try document.createElement("body") let root = ReactRoot(element: body) root.render( node: Content() ) XCTAssertPrint(body, """ <body> <div> 0 <button /> </div> </body> """) let btn: JSHTMLElement = try XCTUnwrap( root.root? .find { $0.tagElement?.tagName == "button" }? .dom?.asHTMLElement() ) try btn.click() XCTAssertPrint(body, """ <body> <div> 1 <button /> </div> </body> """) } ちょっとそれっぽくなってきた（↑このテストが通った） 
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1 I faced a few different issues while trying to get this working, if any of these aren't already known I'd be happy to split them out into separate topics or GitHub issues. Hiccups My fir...
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#7341 Explanation: swift build --build-tests fails on WASI after the experimental summary output, which is introduced in 5.10. This affects not only experimental-summary mode but also the defau...
$ swift sdk が手元でもCIでも動いた。ドキュメントも更新した。 https://github.com/omochi/swift-react/pull/94 artifact bundle の選び方の説明文が変わった。
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-lto=llvm-full -experimental-hermetic-seal-at-link つけたらビルドできなかった・・・ wasm-ld: error: /Users/omochi/github/omochi/swift-string-counter-web/.build/wasm32-unknown-wasi/release/Algorithms.build/Chunked.swift.o: undefined symbol: swift_deallocObject wasm-ld: error: /Users/omochi/github/omochi/swift-string-counter-web/.build/wasm32-unknown-wasi/release/Algorithms.build/AdjacentPairs.swift.o: undefined symbol: swift_release wasm-ld: error: /Users/omochi/github/omochi/swift-string-counter-web/.build/wasm32-unknown-wasi/release/Algorithms.build/Keyed.swift.o: undefined symbol: swift_bridgeObjectRelease wasm-ld: error: /Users/omochi/github/omochi/swift-string-counter-web/.build/wasm32-unknown-wasi/release/Algorithms.build/Keyed.swift.o: undefined symbol: swift_bridgeObjectRelease wasm-ld: error: /Users/omochi/github/omochi/swift-string-counter-web/.build/wasm32-unknown-wasi/release/Algorithms.build/AdjacentPairs.swift.o: undefined symbol: swift_release wasm-ld: error: /Users/omochi/github/omochi/swift-string-counter-web/.build/wasm32-unknown-wasi/release/Algorithms.build/Chunked.swift.o: undefined symbol: swift_deallocObject wasm-ld: error: /Users/omochi/github/omochi/swift-string-counter-web/.build/wasm32-unknown-wasi/release/React.build/ChildrenBuilder.swift.o: undefined symbol: $sytWV clang: error: linker command failed with exit code 1 (use -v to see invocation) [10/11] Linking StringCounter.wasm .build ディレクトリを一旦消したら別のエラーになりませんか？ビルドディレクトリに *.swift.o ファイルが見つからないというようなエラーに． そして SwiftPM だと最近 LTO を有効にするための --experimental-lto-mode=full みたいなのが追加されたみたいなので，-Xswiftc -lto=llvm-full じゃなくてこっちのフラグで指定したらどうなりますか？ https://github.com/apple/swift-package-manager/pull/6891/fileswasm-ld: error: /home/kebo/.swiftpm/swift-sdks/swift-wasm-DEVELOPMENT-SNAPSHOT-2024-05-02-a-wasm32-unknown-wasi.artifactbundle/DEVELOPMENT-SNAPSHOT-2024-05-02-a-wasm32-unknown-wasi/wasm32-unknown-wasi/swift.xctoolchain/usr/lib/swift_static/wasi/wasm32/swiftrt.o: undefined symbol: swift_addNewDSOImage wasm-ld: error: /home/kebo/swift-string-counter-web/.build/wasm32-unknown-wasi/debug/_CJavaScriptKit.build/_CJavaScriptKit.c.o: undefined symbol: _call_host_function_impl wasm-ld: error: /home/kebo/swift-string-counter-web/.build/wasm32-unknown-wasi/debug/_CJavaScriptKit.build/_CJavaScriptKit.c.o: undefined symbol: _free_host_function_impl wasm-ld: error: /home/kebo/swift-string-counter-web/.build/wasm32-unknown-wasi/debug/_CJavaScriptKit.build/_CJavaScriptKit.c.o: undefined symbol: _library_features clang: error: linker command failed with exit code 1 (use -v to see invocation) 1
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#7341 Explanation: swift build --build-tests fails on WASI after the experimental summary output, which is introduced in 5.10. This affects not only experimental-summary mode but also the defau...
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test.js を返す制御ってどこですか？ configuration.entrypoint に test.js って書いてあるんだけど、 routerの実装で configuration.entrypoint を読んでる部分がないので、 配送できないように見える 実際 index.html は取れるけど test.js は取れない [omochi@omochi-mbp swift-react (swift510 *%)]$ curl -v http://127.0.0.1:8080/ * Trying 127.0.0.1:8080... * Connected to 127.0.0.1 (127.0.0.1) port 8080 > GET / HTTP/1.1 > Host: 127.0.0.1:8080 > User-Agent: curl/8.6.0 > Accept: */* > < HTTP/1.1 200 OK < Content-Type: text/html < Content-Length: 228 < Connection: close < <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <script type="module" src="test.js"></script> </head> <body> </body> * Closing connection </html>% [omochi@omochi-mbp swift-react (swift510 *%)]$ curl -v http://127.0.0.1:8080/test.js * Trying 127.0.0.1:8080... * Connected to 127.0.0.1 (127.0.0.1) port 8080 > GET /test.js HTTP/1.1 > Host: 127.0.0.1:8080 > User-Agent: curl/8.6.0 > Accept: */* > < HTTP/1.1 404 Not Found < Connection: close < Content-Length: 0 < * Closing connection Watcher, bundler, and test runner for your SwiftWasm apps - swiftwasm/carton Watcher, bundler, and test runner for your SwiftWasm apps - swiftwasm/carton
Builder.swift がなくなって、それによってStackSanitizerを埋め込む動作がなくなっている？
1 Watcher, bundler, and test runner for your SwiftWasm apps - CI で Swift のインストールにコンテナイメージを使うのをやめて、 tarball からランナーに直接インストールする · swiftwasm/carton@cfc0997
Watcher, bundler, and test runner for your SwiftWasm apps - fix process env · swiftwasm/carton@848ae5a
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