fix: Add 'main' and 'types' entries to package.json (#48)

Author: nzakas

packages/compat/package.json

@@ -3,6 +3,8 @@
   "version": "1.0.3",
   "description": "Compatibility utilities for ESLint",
   "type": "module",
+  "main": "dist/esm/index.js",
+  "types": "dist/esm/index.d.ts",
   "exports": {
     "require": {
       "types": "./dist/cjs/index.d.cts",

packages/config-array/package.json

@@ -4,6 +4,8 @@
   "description": "General purpose glob-based configuration matching.",
   "author": "Nicholas C. Zakas",
   "type": "module",
+  "main": "dist/esm/index.js",
+  "types": "dist/esm/index.d.ts",
   "exports": {
     "require": {
       "types": "./dist/cjs/index.d.cts",

packages/object-schema/package.json

@@ -3,6 +3,8 @@
   "version": "2.1.3",
   "description": "An object schema merger/validator",
   "type": "module",
+  "main": "dist/esm/index.js",
+  "types": "dist/esm/index.d.ts",
   "exports": {
     "require": {
       "types": "./dist/cjs/index.d.cts",