Add extractor and builder

Tested and working

scripts/util/environmentCheck.js

@@ -0,0 +1,12 @@
+// Checks if current environment is Travis CI, Cron builds, API builds
+const isTravisCI = () => 'TRAVIS' in process.env && 'CI' in process.env;
+const isTravisCronOrAPI = () =>
+  process.env['TRAVIS_EVENT_TYPE'] === 'cron' ||
+  process.env['TRAVIS_EVENT_TYPE'] === 'api';
+const isNotTravisCronOrAPI = () => !isTravisCronOrAPI();
+
+module.exports = {
+  isTravisCI,
+  isTravisCronOrAPI,
+  isNotTravisCronOrAPI,
+};