cjs compatibility

[auth12]

Hi,

Using the library in a CJS module results in ERR_PACKAGE_PATH_NOT_EXPORTED due to the export definitions of the package?, the following diff fixes the issue.

diff --git a/node_modules/@massive.com/client-js/package.json b/node_modules/@massive.com/client-js/package.json
index 10bd9dd..de06876 100644
--- a/node_modules/@massive.com/client-js/package.json
+++ b/node_modules/@massive.com/client-js/package.json
@@ -6,8 +6,11 @@
   "types": "dist/main.d.ts",
   "type": "module",
   "exports": {
-    "types": "./dist/main.d.ts",
-    "import": "./dist/main.js"
+    ".": {
+      "types": "./dist/main.d.ts",
+      "default": "./dist/main.js",
+      "import": "./dist/main.js"
+    }
   },
   "scripts": {
     "test": "mocha",