chore: switch from Babel to SWC with pnpm patch for stage-3 decorators

Author: Copilot

babel.config.js

@@ -31,9 +31,6 @@
     "web-utility": "^4.6.6"
   },
   "devDependencies": {
-    "@babel/plugin-proposal-decorators": "^7.29.7",
-    "@babel/plugin-transform-typescript": "^7.29.7",
-    "@babel/preset-react": "^7.29.7",
     "@biomejs/biome": "^2.5.1",
     "@octokit/openapi-types": "^27.0.0",
     "@tailwindcss/postcss": "^4.3.1",

package.json

@@ -0,0 +1,42 @@
+diff --git a/dist/build/swc/options.js b/dist/build/swc/options.js
+index 8da2935..8e04947 100644
+--- a/dist/build/swc/options.js
++++ b/dist/build/swc/options.js
+@@ -57,7 +57,7 @@ function getParserOptions({ filename, jsConfig, ...rest }) {
+         ...rest,
+         syntax: hasTsSyntax ? 'typescript' : 'ecmascript',
+         dynamicImport: true,
+-        decorators: enableDecorators,
++        decorators: true,
+         // Exclude regular TypeScript files from React transformation to prevent e.g. generic parameters and angle-bracket type assertion from being interpreted as JSX tags.
+         [hasTsSyntax ? 'tsx' : 'jsx']: !isTSFile,
+         importAssertions: true
+@@ -102,6 +102,7 @@ function getBaseSWCOptions({ filename, jest, development, hasReactRefresh, globa
+                 } : {},
+                 legacyDecorator: enableDecorators,
+                 decoratorMetadata: emitDecoratorMetadata,
++                decoratorVersion: "2022-03",
+                 useDefineForClassFields: useDefineForClassFields,
+                 react: {
+                     importSource: (jsConfig == null ? void 0 : (_jsConfig_compilerOptions4 = jsConfig.compilerOptions) == null ? void 0 : _jsConfig_compilerOptions4.jsxImportSource) ?? ((compilerOptions == null ? void 0 : compilerOptions.emotion) && !isReactServerLayer ? '@emotion/react' : 'react'),
+diff --git a/dist/esm/build/swc/options.js b/dist/esm/build/swc/options.js
+index 6d5922e..fb9b44a 100644
+--- a/dist/esm/build/swc/options.js
++++ b/dist/esm/build/swc/options.js
+@@ -26,7 +26,7 @@ export function getParserOptions({ filename, jsConfig, ...rest }) {
+         ...rest,
+         syntax: hasTsSyntax ? 'typescript' : 'ecmascript',
+         dynamicImport: true,
+-        decorators: enableDecorators,
++        decorators: true,
+         // Exclude regular TypeScript files from React transformation to prevent e.g. generic parameters and angle-bracket type assertion from being interpreted as JSX tags.
+         [hasTsSyntax ? 'tsx' : 'jsx']: !isTSFile,
+         importAssertions: true
+@@ -71,6 +71,7 @@ function getBaseSWCOptions({ filename, jest, development, hasReactRefresh, globa
+                 } : {},
+                 legacyDecorator: enableDecorators,
+                 decoratorMetadata: emitDecoratorMetadata,
++                decoratorVersion: "2022-03",
+                 useDefineForClassFields: useDefineForClassFields,
+                 react: {
+                     importSource: (jsConfig == null ? void 0 : (_jsConfig_compilerOptions4 = jsConfig.compilerOptions) == null ? void 0 : _jsConfig_compilerOptions4.jsxImportSource) ?? ((compilerOptions == null ? void 0 : compilerOptions.emotion) && !isReactServerLayer ? '@emotion/react' : 'react'),

patches/next@16.2.9.patch

@@ -4,6 +4,8 @@ autoInstallPeers: false
 overrides:
   "@types/react": "^19.2.17"
   "@types/react-dom": "^19.2.3"
+patchedDependencies:
+  next@16.2.9: patches/next@16.2.9.patch
 allowBuilds:
   "@biomejs/biome": true
   "core-js": true