🔨 config(build): Set source and exports fields in package.json.

Author: make-github-pseudonymous-again

package.json

@@ -29,7 +29,19 @@
     "untruth"
   ],
   "sideEffects": false,
+  "source": "src/index.js",
   "main": "dist/index.js",
+  "module": "dist/index.module.js",
+  "umd:main": "dist/index.umd.js",
+  "unpkg": "dist/index.umd.js",
+  "exports": {
+    ".": {
+      "browser": "./dist/index.module.js",
+      "umd": "./dist/index.umd.js",
+      "require": "./dist/index.js",
+      "default": "./dist/index.modern.js"
+    }
+  },
   "files": [
     "dist"
   ],