fix(svg): build on iOS without @nativescript/canvas

packages/canvas-svg/nativescript.config.ts

@@ -0,0 +1,38 @@
+import { NativeScriptConfig } from '@nativescript/core';
+
+export default {
+	ios: {
+		SPMPackages: [
+			{
+				name: 'CanvasNative',
+				libs: ['NativeScriptV8'],
+				// Header-only SwiftPM shim (V8 headers + empty stub) shipped inside
+				// this npm package — same shim @nativescript/canvas ships, so the SVG
+				// sources compile without @nativescript/canvas installed. The CLI
+				// dedupes same-name packages across plugins, so installing both
+				// plugins adds it only once. Referenced by local path on purpose: a
+				// repositoryURL reference makes SwiftPM clone the canvas repo's
+				// entire multi-GB git history just to read Package.swift.
+				path: 'node_modules/@nativescript/canvas-svg/platforms/ios/NativeScriptV8',
+			},
+		],
+	},
+	visionos: {
+		SPMPackages: [
+			{
+				name: 'CanvasNative',
+				libs: ['NativeScriptV8'],
+				path: 'node_modules/@nativescript/canvas-svg/platforms/ios/NativeScriptV8',
+			},
+		],
+	},
+	tvos: {
+		SPMPackages: [
+			{
+				name: 'CanvasNative',
+				libs: ['NativeScriptV8'],
+				path: 'node_modules/@nativescript/canvas-svg/platforms/ios/NativeScriptV8',
+			},
+		],
+	},
+} as NativeScriptConfig;

packages/canvas-svg/platforms/ios/build.xcconfig

@@ -3,4 +3,21 @@ OTHER_LDFLAGS[sdk=xros*] = $(inherited) -framework Foundation -framework CanvasS
 OTHER_LDFLAGS[sdk=xrsimulator*] = $(inherited) -framework Foundation -framework CanvasSVG
 OTHER_LDFLAGS[sdk=appletvos*] = $(inherited) -framework Foundation -framework CanvasSVG
 OTHER_LDFLAGS[sdk=appletvsimulator*] = $(inherited) -framework Foundation -framework CanvasSVG
-OTHER_LDFLAGS[sdk=macosx*] = $(inherited) -framework Foundation -framework CanvasSVG
+OTHER_LDFLAGS[sdk=macosx*] = $(inherited) -framework Foundation -framework CanvasSVG
+
+// V8 14.9's headers use C++20 concepts/requires-clauses (e.g. v8-internal.h).
+CLANG_CXX_LANGUAGE_STANDARD = c++20
+
+// The NativeScriptV8 SwiftPM shim (nativescript.config.ts) puts its Headers dir on the
+// search path, which resolves "include/v8.h". The V8 headers then include each other by
+// bare name (cppgc/common.h -> "v8config.h"), which needs Headers/include itself on the
+// path too - the same reason @nativescript/canvas's build.xcconfig adds it. Passed as -I
+// flags rather than HEADER_SEARCH_PATHS, which the CLI's xcconfig merge would let drop
+// the CocoaPods paths, and named apart from canvas's so both plugins' flags are kept.
+// Two roots, as in canvas: an installed plugin, and this monorepo's demo apps (whose
+// node_modules link packages/canvas-svg, where the shim isn't materialised).
+CANVAS_SVG_V8_HEADERS_NPM = $(SRCROOT)/../../node_modules/@nativescript/canvas-svg/platforms/ios/NativeScriptV8/Headers/include
+CANVAS_SVG_V8_HEADERS_MONOREPO = $(SRCROOT)/../../../../nativescript-v8/Headers/include
+CANVAS_SVG_V8_HEADER_FLAGS = -I"$(CANVAS_SVG_V8_HEADERS_NPM)" -I"$(CANVAS_SVG_V8_HEADERS_MONOREPO)"
+OTHER_CFLAGS = $(inherited) $(CANVAS_SVG_V8_HEADER_FLAGS)
+OTHER_CPLUSPLUSFLAGS = $(inherited) $(CANVAS_SVG_V8_HEADER_FLAGS)

packages/canvas-svg/project.json

@@ -15,11 +15,28 @@
 				"assets": [
 					"packages/canvas-svg/*.md",
 					"packages/canvas-svg/index.d.ts",
+					"packages/canvas-svg/nativescript.config.ts",
 					"LICENSE",
 					{
 						"glob": "**/*",
 						"input": "packages/canvas-svg/platforms/",
 						"output": "./platforms/"
+					},
+					{
+						"glob": "Package.swift",
+						"input": "nativescript-v8/",
+						"output": "./platforms/ios/NativeScriptV8/"
+					},
+					{
+						"glob": "**/*",
+						"input": "nativescript-v8/Headers/",
+						"output": "./platforms/ios/NativeScriptV8/Headers/",
+						"ignore": ["**/.gitignore"]
+					},
+					{
+						"glob": "**/*",
+						"input": "nativescript-v8/Sources/",
+						"output": "./platforms/ios/NativeScriptV8/Sources/"
 					}
 				],
 				"dependsOn": [