Add important

corpus/declarations.txt

@@ -111,3 +111,19 @@ a {
     (selectors (tag_name))
     (block
       (declaration (property_name) (plain_value)))))
+
+============================
+Important declarations
+============================
+
+a {
+  b: c !important;
+}
+
+---
+
+(stylesheet
+  (rule_set
+    (selectors (tag_name))
+    (block
+      (declaration (property_name) (plain_value) (important)))))

grammar.js

@@ -139,9 +139,12 @@ module.exports = grammar({
         optional(','),
         $._value
       )),
+      optional($.important),
       ';'
     )),
 
+    important: $ => '!important',
+
     // Media queries
 
     _query: $ => choice(

src/grammar.json

@@ -627,6 +627,18 @@
               ]
             }
           },
+          {
+            "type": "CHOICE",
+            "members": [
+              {
+                "type": "SYMBOL",
+                "name": "important"
+              },
+              {
+                "type": "BLANK"
+              }
+            ]
+          },
           {
             "type": "STRING",
             "value": ";"
@@ -634,6 +646,10 @@
         ]
       }
     },
+    "important": {
+      "type": "STRING",
+      "value": "!important"
+    },
     "_query": {
       "type": "CHOICE",
       "members": [