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

tests/expected-kubeconfig.json

@@ -0,0 +1,27 @@
+{
+  "apiVersion": "v1",
+  "kind": "Config",
+  "clusters": [
+    {
+      "name": "example",
+      "cluster": {
+        "server": "http://example.com:8080",
+        "insecure-skip-tls-verify": false
+      }
+    }
+  ],
+  "users": [],
+  "contexts": [
+    {
+      "name": "example",
+      "context": {
+        "cluster": "example",
+        "name": "example",
+        "user": "example",
+        "namespace": "example"
+      }
+    }
+  ],
+  "preferences": {},
+  "current-context": "example"
+}

tests/sample-kubeconfig.yml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Config
+clusters:
+  - cluster:
+      server: http://example.com:8080
+    name: example
+contexts:
+  - context:
+      cluster: example
+      namespace: example
+      user: example
+    name: example

tests/sample-secret.yml

@@ -0,0 +1,35 @@
+apiVersion: v1
+data:
+  ca.crt: LS0tLS1CRUdJTiBDRWyUSUZJQ
+  namespace: ZGVmBXUsLdA==
+  token: ZXlKaGJHY2lPcUpTVXpJMU5pSX=
+kind: Secret
+metadata:
+  annotations:
+    kubernetes.io/service-account.name: default
+    kubernetes.io/service-account.uid: e1414a3z-22fe-48d1-ab9e-18e4a5b91c
+  creationTimestamp: "2020-03-02T06:40:31Z"
+  managedFields:
+  - apiVersion: v1
+    fieldsType: FieldsV1
+    fieldsV1:
+      f:data:
+        .: {}
+        f:ca.crt: {}
+        f:namespace: {}
+        f:token: {}
+      f:metadata:
+        f:annotations:
+          .: {}
+          f:kubernetes.io/service-account.name: {}
+          f:kubernetes.io/service-account.uid: {}
+      f:type: {}
+    manager: kube-controller-manager
+    operation: Update
+    time: "2020-03-02T06:40:31Z"
+  name: default-token-bl8ra
+  namespace: default
+  resourceVersion: "278"
+  selfLink: /api/v1/namespaces/default/secrets/default-token-bl8ra
+  uid: e6d8b21b-2e3a-4606-98za-54fb44fdc
+type: kubernetes.io/service-account-token

tests/util.ts

@@ -0,0 +1,7 @@
+/**
+ * Returns error thrown by core.getInput when input required but not found
+ * @param inputName Name of input
+ * @returns Error with explanation message
+ */
+export const getRequiredInputError = (inputName) =>
+  Error(`Input required and not supplied: ${inputName}`);