feat: invites (#967)

* stub invite endpoint

* feat: First pass invite UI

* feat: allow removing invite rows

* First pass: sending logic

* fix: label accessibility

* fix: add button submits
incorrect permissions
middleware flow error

* 💚

* Error handling, email filtering, tests

* Flow

* Add Invite to people page
Remove old Tip

* Add copy link to subdomain

server/commands/userInviter.test.js

@@ -0,0 +1,56 @@
+/* eslint-disable flowtype/require-valid-file-annotation */
+import userInviter from '../commands/userInviter';
+import { flushdb } from '../test/support';
+import { buildUser } from '../test/factories';
+
+beforeEach(flushdb);
+
+describe('userInviter', async () => {
+  it('should return sent invites', async () => {
+    const user = await buildUser();
+    const response = await userInviter({
+      invites: [{ email: 'test@example.com', name: 'Test' }],
+      user,
+    });
+    expect(response.sent.length).toEqual(1);
+  });
+
+  it('should filter empty invites', async () => {
+    const user = await buildUser();
+    const response = await userInviter({
+      invites: [{ email: ' ', name: 'Test' }],
+      user,
+    });
+    expect(response.sent.length).toEqual(0);
+  });
+
+  it('should filter obviously bunk emails', async () => {
+    const user = await buildUser();
+    const response = await userInviter({
+      invites: [{ email: 'notanemail', name: 'Test' }],
+      user,
+    });
+    expect(response.sent.length).toEqual(0);
+  });
+
+  it('should not send duplicates', async () => {
+    const user = await buildUser();
+    const response = await userInviter({
+      invites: [
+        { email: 'the@same.com', name: 'Test' },
+        { email: 'the@same.com', name: 'Test' },
+      ],
+      user,
+    });
+    expect(response.sent.length).toEqual(1);
+  });
+
+  it('should not send invites to existing team members', async () => {
+    const user = await buildUser();
+    const response = await userInviter({
+      invites: [{ email: user.email, name: user.name }],
+      user,
+    });
+    expect(response.sent.length).toEqual(0);
+  });
+});