fix: add backwards compatibility

Author: gagik

package.json

@@ -30,12 +30,12 @@
   "scripts": {
     "prepare": "npm run build",
     "build:clean": "rm -rf dist",
-    "build:update-package-info": "tsx scripts/update-package-info.ts",
+    "build:update-package-version": "tsx scripts/updatePackageVersion.ts",
     "build:esm": "tsc --project tsconfig.esm.json",
     "build:cjs": "tsc --project tsconfig.cjs.json",
-    "build:package-json": "tsx scripts/write-package-json.ts",
+    "build:universal-package": "tsx scripts/createUniversalPackage.ts",
     "build:chmod": "chmod +x dist/esm/index.js",
-    "build": "npm run build:clean && npm run build:esm && npm run build:cjs && npm run build:package-json && npm run build:chmod",
+    "build": "npm run build:clean && npm run build:esm && npm run build:cjs && npm run build:universal-package && npm run build:chmod",
     "inspect": "npm run build && mcp-inspector -- dist/esm/index.js",
     "prettier": "prettier",
     "check": "npm run build && npm run check:types && npm run check:lint && npm run check:format",

scripts/write-package-json.ts renamed to scripts/createUniversalPackage.ts

@@ -5,6 +5,10 @@ import { resolve } from "path";
 
 const distDir = resolve("dist");
 
+/**
+ * Node uses the package.json to know whether files with a .js extensions
+ * should be interpreted as CommonJS or ESM.
+ */
 // ESM package.json
 const esmPath = resolve(distDir, "esm", "package.json");
 mkdirSync(resolve(distDir, "esm"), { recursive: true });
@@ -14,3 +18,8 @@ writeFileSync(esmPath, JSON.stringify({ type: "module" }));
 const cjsPath = resolve(distDir, "cjs", "package.json");
 mkdirSync(resolve(distDir, "cjs"), { recursive: true });
 writeFileSync(cjsPath, JSON.stringify({ type: "commonjs" }));
+
+// Create a dist/index.js file that imports the ESM index.js file
+// To minimize breaking changes from pre-universal package time.
+const indexPath = resolve(distDir, "index.js");
+writeFileSync(indexPath, `import "./esm/index.js";`);

scripts/update-package-info.ts renamed to scripts/updatePackageVersion.ts

@@ -10,7 +10,7 @@ const packageJson = JSON.parse(readFileSync(packageJsonPath, "utf-8")) as {
 };
 
 // Define the packageInfo.ts content
-const packageInfoContent = `// This file was generated by scripts/update-package-info.ts - Do not edit it manually.
+const packageInfoContent = `// This file was generated by scripts/updatePackageVersion.ts - Do not edit it manually.
 export const packageInfo = {
     version: "${packageJson.version}",
     mcpServerName: "MongoDB MCP Server",

src/common/packageInfo.ts

@@ -1,4 +1,4 @@
-// This file was generated by scripts/update-package-info.ts - Do not edit it manually.
+// This file was generated by scripts/updatePackageVersion.ts - Do not edit it manually.
 export const packageInfo = {
     version: "0.1.3",
     mcpServerName: "MongoDB MCP Server",