Refactor entire project (#39)

- Use more modern TypeScript conventions
- Use JavaScript Kubernetes Client
- Add unit tests
- Add integration tests
- Add TypeScript compile verify workflow
- Switch codeowners

src/types/method.test.ts

@@ -0,0 +1,29 @@
+import { Method, parseMethod } from "./method";
+
+describe("Method type", () => {
+  test("it has required values", () => {
+    const vals = <any>Object.values(Method);
+    expect(vals.includes("kubeconfig")).toBe(true);
+    expect(vals.includes("service-account")).toBe(true);
+    expect(vals.includes("service-principal")).toBe(true);
+  });
+
+  test("it can parse valid values from a string", () => {
+    expect(parseMethod("kubeconfig")).toBe(Method.KUBECONFIG);
+    expect(parseMethod("Kubeconfig")).toBe(Method.KUBECONFIG);
+    expect(parseMethod("KUBECONFIG")).toBe(Method.KUBECONFIG);
+
+    expect(parseMethod("service-account")).toBe(Method.SERVICE_ACCOUNT);
+    expect(parseMethod("Service-Account")).toBe(Method.SERVICE_ACCOUNT);
+    expect(parseMethod("SERVICE-ACCOUNT")).toBe(Method.SERVICE_ACCOUNT);
+
+    expect(parseMethod("service-principal")).toBe(Method.SERVICE_PRINCIPAL);
+    expect(parseMethod("Service-Principal")).toBe(Method.SERVICE_PRINCIPAL);
+    expect(parseMethod("SERVICE-PRINCIPAL")).toBe(Method.SERVICE_PRINCIPAL);
+  });
+
+  test("it will return undefined if it can't parse values from a string", () => {
+    expect(parseMethod("invalid")).toBe(undefined);
+    expect(parseMethod("unsupportedType")).toBe(undefined);
+  });
+});