Remove test files from the published package (#1902)

Author: Simek

package.json

@@ -81,7 +81,8 @@
   "files": [
     "dist",
     "src",
-    "jestSetup.js"
+    "jestSetup.js",
+    "!__tests__"
   ],
   "dependencies": {
     "tslib": "2.8.1"

tsconfig.json

@@ -6,5 +6,5 @@
     "rootDir": "./src"
   },
   "include": ["src/**/*"],
-  "exclude": ["node_modules", "**/*.test.ts?(x)"]
+  "exclude": ["node_modules", "src/__tests__", "**/*.test.ts?(x)"]
 }