Refactoring diagnostic tests in multiple files.

server/lib/diagnostic/utils.ts

@@ -0,0 +1,18 @@
+type nextValue = 'backend' | 'webchat-video' | 'webchat-type' | 'prosody' | 'converse' | 'use-uri'
+
+export interface TestResult {
+  label?: string
+  messages: string[]
+  next: nextValue | null
+  ok: boolean
+  test: string
+}
+
+export function newResult (test: string): TestResult {
+  return {
+    test: test,
+    ok: false,
+    messages: [],
+    next: null
+  }
+}