ignored warning support

js2-mode.el

@@ -226,6 +226,13 @@ variable with predicate PRED."
   (make-variable-buffer-local name)
   (put name 'safe-local-variable pred))
 
+(defcustom js2-ignored-warnings nil
+  "A list of warning message types that will not be reported.
+
+Possible values are the keys of `js2-message-table'."
+  :group 'js2-mode
+  :type 'list)
+
 (defcustom js2-highlight-level 2
   "Amount of syntax highlighting to perform.
 0 or a negative value means none.
@@ -8130,11 +8137,23 @@ Scanner should be initialized."
     (setq js2-mode-ast root)  ; Make sure this is available for callbacks.
     ;; Give extensions a chance to muck with things before highlighting starts.
     (let ((js2-additional-externs js2-additional-externs))
+      (js2-filter-parsed-errors)
       (save-excursion
         (run-hooks 'js2-post-parse-callbacks))
       (js2-highlight-undeclared-vars))
     root))
 
+(defun js2-filter-parsed-errors ()
+  "Remove `js2-ignored-warnings' from `js2-parsed-errors'."
+  (when js2-ignored-warnings
+    (setq js2-parsed-warnings
+          (cl-remove-if
+           (lambda (warning)
+             (let ((msg (caar warning)))
+               (and msg (member msg js2-ignored-warnings))))
+           js2-parsed-warnings)))
+  js2-parsed-warnings)
+
 (defun js2-parse-function-closure-body (fn-node)
   "Parse a JavaScript 1.8 function closure body."
   (let ((js2-nesting-of-function (1+ js2-nesting-of-function)))