Add building of the project before running the browser tests

Author: bidoubiwa

package.json

@@ -38,7 +38,7 @@
     "test": "yarn clear_jest && jest --runInBand --verbose",
     "types:watch": "nodemon --config nodemon.json",
     "types": "yarn tsc",
-    "test:env:browser": "yarn --cwd tests/env/express && yarn --cwd tests/env/express test",
+    "test:env:browser": "yarn build && yarn --cwd tests/env/express && yarn --cwd tests/env/express test",
     "test:watch": "yarn clear_jest && yarn test --watch",
     "test:coverage": "yarn test --coverage",
     "test:ci": "yarn test --ci",