fix(contact): fix bug where malformed contacts threw an error

Summary:
Also added tests to catch the case
Fixes T4290

Test Plan: new tests

Reviewers: bengotow

Reviewed By: bengotow

Maniphest Tasks: T4290

Differential Revision: https://phab.nylas.com/D2153

spec/stores/contact-store-spec.coffee

@@ -139,6 +139,18 @@ describe "ContactStore", ->
       expect(ContactStore.isValidContact(new Contact(name: 'Ben', email:'<ben@nylas.com>'))).toBe(false)
       expect(ContactStore.isValidContact(new Contact(name: 'Ben', email:'"ben@nylas.com"'))).toBe(false)
 
+    it "returns false if we're not passed a contact", ->
+      expect(ContactStore.isValidContact()).toBe false
+
+    it "returns false if the contact doesn't have an email", ->
+      expect(ContactStore.isValidContact(new Contact(name: "test"))).toBe false
+
+    it "returns false if the email doesn't satisfy the regex", ->
+      expect(ContactStore.isValidContact(new Contact(name: "test", email: "foo"))).toBe false
+
+    it "returns false if the email doesn't match", ->
+      expect(ContactStore.isValidContact(new Contact(name: "test", email: "foo@"))).toBe false
+
   describe 'parseContactsInString', ->
     testCases =
       # Single contact test cases

src/flux/stores/contact-store.coffee

@@ -116,8 +116,10 @@ class ContactStore extends NylasStore
     return false unless contact.email
 
     # The email regexp must match the /entire/ email address
-    [match] = RegExpUtils.emailRegex().exec(contact.email)
-    return match is contact.email
+    result = RegExpUtils.emailRegex().exec(contact.email)
+    if result and result instanceof Array
+      return result[0] is contact.email
+    else return false
 
   parseContactsInString: (contactString, options={}) =>
     {skipNameLookup} = options