Updated the files.

my-app/node_modules/karma/lib/browser_result.js

@@ -0,0 +1,30 @@
+'use strict'
+
+class BrowserResult {
+  constructor (total = 0) {
+    this.startTime = Date.now()
+
+    this.total = total
+    this.skipped = this.failed = this.success = 0
+    this.netTime = this.totalTime = 0
+    this.disconnected = this.error = false
+  }
+
+  totalTimeEnd () {
+    this.totalTime = Date.now() - this.startTime
+  }
+
+  add (result) {
+    if (result.skipped) {
+      this.skipped++
+    } else if (result.success) {
+      this.success++
+    } else {
+      this.failed++
+    }
+
+    this.netTime += result.time
+  }
+}
+
+module.exports = BrowserResult