- Switch to native ESM

Author: brettz9

.eslintrc.js renamed to .eslintrc.cjs

@@ -3,8 +3,12 @@
   "description": "ECMAScript JS AST traversal functions",
   "homepage": "https://github.com/estools/estraverse",
   "bugs": "https://github.com/estools/estraverse/issues",
-  "main": "dist/estraverse.min.js",
-  "module": "dist/estraverse.esm.min.js",
+  "type": "module",
+  "main": "./dist/estraverse.min.js",
+  "exports": {
+    "import": "./dist/estraverse.esm.min.js",
+    "require": "./dist/estraverse.min.js"
+  },
   "version": "5.3.0",
   "engines": {
     "node": ">=4.0"
@@ -34,17 +38,17 @@
     "@babel/preset-env": "^7.16.11",
     "@babel/register": "^7.17.0",
     "@rollup/plugin-babel": "^5.3.1",
+    "c8": "^7.11.0",
     "chai": "^4.3.6",
     "eslint": "^8.10.0",
     "espree": "^9.3.1",
     "esprima": "^4.0.1",
     "mocha": "^9.2.1",
-    "nyc": "^15.1.0",
     "rollup": "^2.70.0",
     "rollup-plugin-terser": "^7.0.2"
   },
   "license": "BSD-2-Clause",
-  "nyc": {
+  "c8": {
     "branches": 100,
     "lines": 100,
     "functions": 100,
@@ -61,6 +65,6 @@
     "build": "rollup -c",
     "test": "npm run lint && npm run unit-test",
     "lint": "eslint .",
-    "unit-test": "nyc mocha --require chai/register-expect.js --require @babel/register"
+    "unit-test": "c8 mocha --require chai/register-expect.js --require @babel/register"
   }
 }