Convert build scripts from CommonJS to ES Modules

- Convert all eng/*.js files to ES Modules (.mjs)
- Update package.json scripts to reference .mjs files
- Fix ERR_REQUIRE_ESM error with vfile v6.0.3
- Add __dirname polyfills for ES Modules

eng/constants.mjs

@@ -1,4 +1,9 @@
-const path = require("path");
+import path from "path";
+import { fileURLToPath } from "url";
+import { dirname } from "path";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
 
 // Template sections for the README
 const TEMPLATES = {
@@ -115,7 +120,7 @@ const MAX_COLLECTION_ITEMS = 50;
 
 const DOCS_DIR = path.join(ROOT_FOLDER, "docs");
 
-module.exports = {
+export {
   TEMPLATES,
   vscodeInstallImage,
   vscodeInsidersInstallImage,
@@ -130,3 +135,4 @@ module.exports = {
   MAX_COLLECTION_ITEMS,
   DOCS_DIR,
 };
+

eng/update-readme.mjs

@@ -1,14 +1,16 @@
 #!/usr/bin/env node
 
-const fs = require("fs");
-const path = require("path");
-const {
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+import { dirname } from "path";
+import {
   parseCollectionYaml,
   extractMcpServers,
   extractMcpServerConfigs,
   parseFrontmatter,
-} = require("./yaml-parser");
-const {
+} from "./yaml-parser.mjs";
+import {
   TEMPLATES,
   AKA_INSTALL_URLS,
   repoBaseUrl,
@@ -21,7 +23,10 @@ const {
   COLLECTIONS_DIR,
   INSTRUCTIONS_DIR,
   DOCS_DIR,
-} = require("./constants");
+} from "./constants.mjs";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
 
 // Cache of MCP registry server names (lower-cased) loaded from github-mcp-registry.json
 let MCP_REGISTRY_SET = null;
@@ -968,3 +973,4 @@ try {
   console.error(`Error generating category README files: ${error.message}`);
   process.exit(1);
 }
+

eng/validate-collections.mjs

@@ -1,13 +1,13 @@
 #!/usr/bin/env node
 
-const fs = require("fs");
-const path = require("path");
-const { parseCollectionYaml, parseFrontmatter } = require("./yaml-parser");
-const {
+import fs from "fs";
+import path from "path";
+import { parseCollectionYaml, parseFrontmatter } from "./yaml-parser.mjs";
+import {
   ROOT_FOLDER,
   COLLECTIONS_DIR,
   MAX_COLLECTION_ITEMS,
-} = require("./constants");
+} from "./constants.mjs";
 
 // Validation functions
 function validateCollectionId(id) {
@@ -370,3 +370,4 @@ try {
   console.error(`Error during validation: ${error.message}`);
   process.exit(1);
 }
+

eng/yaml-parser.mjs

@@ -1,8 +1,8 @@
 // YAML parser for collection files and frontmatter parsing using vfile-matter
-const fs = require("fs");
-const yaml = require("js-yaml");
-const { VFile } = require("vfile");
-const { matter } = require("vfile-matter");
+import fs from "fs";
+import yaml from "js-yaml";
+import { VFile } from "vfile";
+import { matter } from "vfile-matter";
 
 function safeFileOperation(operation, filePath, defaultValue = null) {
   try {
@@ -137,7 +137,7 @@ function extractMcpServerConfigs(filePath) {
   });
 }
 
-module.exports = {
+export {
   parseCollectionYaml,
   parseFrontmatter,
   extractAgentMetadata,

package.json

@@ -6,11 +6,11 @@
   "private": true,
   "scripts": {
     "start": "npm run build",
-    "build": "node ./eng/update-readme.js",
+    "build": "node ./eng/update-readme.mjs",
     "contributors:add": "all-contributors add",
     "contributors:generate": "all-contributors generate",
     "contributors:check": "all-contributors check",
-    "validate:collections": "node ./eng/validate-collections.js"
+    "validate:collections": "node ./eng/validate-collections.mjs"
   },
   "repository": {
     "type": "git",