Fix development exports imports (microsoft#8474)

Fix microsoft#8465

Author: timotheeguerin

.chronus/changes/fix-development-exports-imports-2025-8-15-16-40-20.md

@@ -0,0 +1,7 @@
+---
+changeKind: fix
+packages:
+  - "@typespec/emitter-framework"
+---
+
+Remove development exports from published package

eng/tsp-core/scripts/strip-dev-import-exports.ts

@@ -0,0 +1,54 @@
+#!/usr/bin/env node
+import fs from "fs";
+import path from "path";
+
+// Resolve the path to your package.json
+const pkgPath = path.resolve(process.cwd(), "./package.json");
+const backupPath = pkgPath + ".bak";
+
+function cleanup() {
+  const originalText = fs.readFileSync(pkgPath, "utf8");
+  fs.writeFileSync(backupPath, originalText);
+
+  const pkg = JSON.parse(fs.readFileSync(pkgPath, "utf8"));
+
+  // Recursively remove "development" keys from exports
+  function removeDevExports(exportsField: any) {
+    if (exportsField && typeof exportsField === "object") {
+      if ("development" in exportsField) {
+        delete exportsField.development;
+      }
+      // Recursively handle nested export objects
+      for (const key of Object.keys(exportsField)) {
+        removeDevExports(exportsField[key]);
+      }
+    }
+  }
+
+  if (pkg.exports) {
+    removeDevExports(pkg.exports);
+  }
+
+  if (pkg.imports) {
+    removeDevExports(pkg.imports);
+  }
+
+  // Write the modified package.json back
+  fs.writeFileSync(pkgPath, JSON.stringify(pkg, null, 2) + "\n", "utf8");
+  console.log("Stripped development exports from package.json.");
+}
+
+function restore() {
+  if (fs.existsSync(backupPath)) {
+    const backupText = fs.readFileSync(backupPath, "utf8");
+    fs.writeFileSync(pkgPath, backupText, "utf8");
+    fs.rmSync(backupPath);
+    console.log("Restored original package.json from backup.");
+  }
+}
+
+if (process.argv.includes("--restore")) {
+  restore();
+} else {
+  cleanup();
+}

packages/emitter-framework/package.json

@@ -16,6 +16,8 @@
     "test:ui": "vitest --ui",
     "test:watch": "vitest -w",
     "test:ci": "vitest run --coverage --reporter=junit --reporter=default",
+    "prepack": "tsx ../../eng/tsp-core/scripts/strip-dev-import-exports.ts",
+    "postpack": "tsx ../../eng/tsp-core/scripts/strip-dev-import-exports.ts --restore",
     "lint": "eslint . --max-warnings=0",
     "lint:fix": "eslint . --fix"
   },