fix(parse): 🐛Fix [] not supported

Author: vivaxy

lib/__tests__/fixtures/parse/array-expression-002/input.js

@@ -0,0 +1 @@
+[]

lib/__tests__/fixtures/parse/array-expression-002/output.json

@@ -0,0 +1,13 @@
+{
+  "type": "Program",
+  "body": [
+    {
+      "type": "ExpressionStatement",
+      "expression": {
+        "type": "ArrayExpression",
+        "elements": [
+        ]
+      }
+    }
+  ]
+}

lib/parse.js

@@ -569,9 +569,12 @@ module.exports = function parse(input) {
         }
         i++;
       }
-      arrayExpression.elements.push(
-        parseExpressionStatement(start, i).expression
-      );
+      if (start !== i) {
+        // support `[]`
+        arrayExpression.elements.push(
+          parseExpressionStatement(start, i).expression
+        );
+      }
       consumeNode(arrayExpression);
     }
   }