tern: fix issues when loading layer

layers/+tools/tern/funcs.el

@@ -12,7 +12,7 @@
 (defun spacemacs/tern-setup-tern ()
   "Setup tern backend.
 Must be called by a layer using tern."
-  (require tern)
+  (require 'tern)
   (when tern-disable-port-files
     (add-to-list 'tern-command "--no-port-file" 'append))
   (tern-mode))
@@ -22,7 +22,8 @@ Must be called by a layer using tern."
 Must be called by a layer using tern."
   (eval `(spacemacs|add-company-backends
            :backends company-tern
-           :modes ,@mode
+           :modes ,@modes
            :append-hooks nil
            :call-hooks t))
-  (company-mode))
+  (company-mode)
+  (tern-mode))

layers/+tools/tern/packages.el

@@ -22,7 +22,7 @@
     :config
     (progn
       (spacemacs|hide-lighter tern-mode)
-      (dolist (mode tern-key-bindings-modes)
+      (dolist (mode tern--key-bindings-modes)
         (add-to-list (intern (format "spacemacs-jump-handlers-%S" mode))
                      '(tern-find-definition :async t))
         (spacemacs/set-leader-keys-for-major-mode mode