fix: tests

Author: SerhiyGreench

package.json

@@ -15,7 +15,7 @@
     "prepublish": "npm run build",
     "build": "tsc",
     "mocha": "nyc mocha",
-    "cover": "nyc report --reporter=text-lcov | coveralls",
+    "cover": "nyc report --reporter=text-lcov",
     "show:test": "/usr/bin/env node -e \"import('open').then(open => open.default('file://`pwd`/coverage/index.html',{wait:false}));\"",
     "show:doc": "/usr/bin/env node -e \"import('open').then(open => open.default('file://`pwd`/docs/index.html',{wait:false}));\"",
     "test": "npm run build && npm run mocha ; npm run show:test ; npm run cover",