chore(scan): remove unused dependencies (#193)

Removes unused dependencies from the `scan` package:

- `@babel/generator` - not used
- `@clack/core` - not used directly, already pulled in via
  `@clack/prompts`
- `estree-walker` - not used
- `tsx` - not used

At the root of the monorepo:

- `@vercel/style-guide` - doesn't seem to be referenced anywhere

Also changes a couple of FS paths to use `__dirname` in case `tsup` is
ever run from another `cwd`.

This should drop a big chunk of the install size, re #178. Specifically
since we drop `tsx` which is ~400KB.

Co-authored-by: RobPruzan <[email protected]>

package.json

@@ -26,6 +26,5 @@
   },
   "packageManager": "[email protected]",
   "dependencies": {
-    "@vercel/speed-insights": "^1.1.0"
   }
 }

packages/scan/package.json

@@ -215,29 +215,24 @@
   },
   "dependencies": {
     "@babel/core": "^7.26.0",
-    "@babel/generator": "^7.26.2",
     "@babel/types": "^7.26.0",
-    "@clack/core": "^0.3.5",
     "@clack/prompts": "^0.8.2",
     "@preact/signals": "^1.3.1",
     "@rollup/pluginutils": "^5.1.3",
     "@types/node": "^20.17.9",
     "bippy": "0.2.7",
     "esbuild": "^0.24.0",
-    "estree-walker": "^3.0.3",
     "kleur": "^4.1.5",
     "mri": "^1.2.0",
     "playwright": "^1.49.0",
-    "preact": "^10.25.1",
-    "tsx": "^4.0.0"
+    "preact": "^10.25.1"
   },
   "devDependencies": {
     "@esbuild-plugins/tsconfig-paths": "^0.1.2",
     "@remix-run/react": "*",
     "@types/babel__core": "^7.20.5",
     "@types/react": "^18.0.0",
     "@types/react-router": "^5.1.0",
-    "@vercel/style-guide": "^6.0.0",
     "clsx": "^2.1.1",
     "es-module-lexer": "^1.5.4",
     "next": "*",

packages/scan/tsup.config.ts

@@ -48,12 +48,10 @@ const banner = `/**
 void (async () => {
   await init;
 
-  if (fs.existsSync(DIST_PATH)) {
-    fs.rmSync(DIST_PATH, { recursive: true });
-  }
-  fs.mkdirSync(DIST_PATH, { recursive: true });
-
-  const code = fs.readFileSync('./src/core/index.ts', 'utf8');
+  const code = fs.readFileSync(
+    path.join(__dirname, './src/core/index.ts'),
+    'utf8',
+  );
   const [_, allExports] = parse(code);
   const names: Array<string> = [];
   for (const exportItem of allExports) {
@@ -75,9 +73,15 @@ void (async () => {
 
   setTimeout(() => {
     for (const ext of ['js', 'mjs', 'global.js']) {
-      fs.writeFileSync(`./dist/rsc-shim.${ext}`, script);
+      fs.writeFileSync(path.join(__dirname, `./dist/rsc-shim.${ext}`), script);
+    }
+    for (const ext of ['d.mts', 'd.ts']) {
+      fs.writeFileSync(
+        path.join(__dirname, `./dist/rsc-shim.${ext}`),
+        `export {}`,
+      );
     }
-  }, 500);
+  }, 500); // for some reason it clears the file if we don't wait
 })();
 
 export default defineConfig([
@@ -105,7 +109,6 @@ export default defineConfig([
       'next',
       'next/navigation',
       'react-router',
-      'react-router-dom',
       '@remix-run/react',
     ],
     esbuildPlugins: [workerPlugin],
@@ -163,7 +166,6 @@ export default defineConfig([
       'next',
       'next/navigation',
       'react-router',
-      'react-router-dom',
       '@remix-run/react',
       'preact',
       '@preact/signals',
@@ -215,12 +217,10 @@ export default defineConfig([
     target: 'esnext',
     external: [
       'unplugin',
-      'estree-walker',
       '@rollup/pluginutils',
       '@babel/types',
       '@babel/parser',
       '@babel/traverse',
-      '@babel/generator',
       '@babel/core',
       'rollup',
       'webpack',