Improve code quality and write tests

node_modules/codecov/lib/services/semaphore2x.js

@@ -0,0 +1,15 @@
+module.exports = {
+  detect: function() {
+    return !!process.env.SEMAPHORE && !!process.env.SEMAPHORE_WORKFLOW_ID
+  },
+
+  configuration: function() {
+    console.log('    Semaphore 2.x CI Detected')
+    return {
+      service: 'semaphore2x',
+      branch: process.env.SEMAPHORE_GIT_BRANCH,
+      build: process.env.SEMAPHORE_WORKFLOW_ID,
+      commit: process.env.SEMAPHORE_GIT_SHA,
+    }
+  },
+}