Revert "Resetting package fields for development"

This reverts commit 79d76a0a5a.

package.json

@@ -23,7 +23,7 @@
     "package.json",
     ".stylelintrc.js"
   ],
-  "main": "./src/index.ts",
+  "main": "./lib/index.ts",
   "matrix_src_main": "./src/index.ts",
   "matrix_lib_main": "./lib/index.ts",
   "matrix_lib_typings": "./lib/index.d.ts",
@@ -249,5 +249,6 @@
   "jestSonar": {
     "reportPath": "coverage",
     "sonar56x": true
-  }
+  },
+  "typings": "./lib/index.d.ts"
 }