Provide default export condition

Author: TrySound

package.json

@@ -8,7 +8,8 @@
   "exports": {
     ".": {
       "types": "./dist/args-tokenizer.d.ts",
-      "import": "./dist/args-tokenizer.js"
+      "import": "./dist/args-tokenizer.js",
+      "default": "./dist/args-tokenizer.js"
     },
     "./package.json": "./package.json"
   },