Script to enable pnpm link (#1909)

* Add script to enable/disable pnpm link

* Add description to script

scripts/link-externally.js

@@ -0,0 +1,81 @@
+import fs from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+/**
+ * This script is used to link dependencies from this monorepo to other repos.
+ *
+ * @usage:
+ *   node scripts/link-externally.js enable
+ *   node scripts/link-externally.js disable
+ *
+ *   // when enabled, you can link the package to another repo like this:
+ *   cd other/repo && pnpm link ../penumbra-zone/web/packages/ui
+ */
+
+// Base directory for packages in the monorepo
+const __filename = fileURLToPath(import.meta.url);
+const packagesDir = path.join(path.dirname(__filename), '..', 'packages');
+
+// Get the command-line argument to determine action
+const action = process.argv[2];
+const enableLinking = action === 'enable';
+const disableLinking = action === 'disable';
+
+// Helper function to enable linked exports
+function enableLinkedExports(packageJsonPath) {
+  const packageJson = JSON.parse(fs.readFileSync(packageJsonPath, 'utf-8'));
+
+  // Check if we have publishConfig.exports to copy over
+  if (packageJson.publishConfig && packageJson.publishConfig.exports) {
+    // Store the current exports in __prev_exports if not already stored
+    if (!packageJson.__prev_exports) {
+      packageJson.__prev_exports = packageJson.exports;
+    }
+
+    // Replace exports with publishConfig.exports
+    packageJson.exports = packageJson.publishConfig.exports;
+    fs.writeFileSync(packageJsonPath, JSON.stringify(packageJson, null, 2), 'utf-8');
+    console.log(`Enabled linked exports for ${path.basename(path.dirname(packageJsonPath))}`);
+  }
+}
+
+// Helper function to disable linked exports
+function disableLinkedExports(packageJsonPath) {
+  const packageJson = JSON.parse(fs.readFileSync(packageJsonPath, 'utf-8'));
+
+  // Check if __prev_exports exists to restore
+  if (packageJson.__prev_exports) {
+    // Restore exports to __prev_exports and remove __prev_exports
+    packageJson.exports = packageJson.__prev_exports;
+    delete packageJson.__prev_exports;
+    fs.writeFileSync(packageJsonPath, JSON.stringify(packageJson, null, 2) + '\n', 'utf-8');
+    console.log(`Disabled linked exports for ${path.basename(path.dirname(packageJsonPath))}`);
+  }
+}
+
+// Main function to process each package.json
+function processPackages() {
+  const packages = fs.readdirSync(packagesDir).filter(pkg => {
+    return fs.statSync(path.join(packagesDir, pkg)).isDirectory();
+  });
+
+  packages.forEach(pkg => {
+    const packageJsonPath = path.join(packagesDir, pkg, 'package.json');
+
+    if (fs.existsSync(packageJsonPath)) {
+      if (enableLinking) {
+        enableLinkedExports(packageJsonPath);
+      } else if (disableLinking) {
+        disableLinkedExports(packageJsonPath);
+      }
+    }
+  });
+}
+
+// Check if the correct action is specified
+if (enableLinking || disableLinking) {
+  processPackages();
+} else {
+  console.log('Please specify either "enable" or "disable" as an argument.');
+}