Izmjenjena struktura, dodan backand

web/node_modules/jsx-ast-utils/lib/values/expressions/UpdateExpression.js

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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = extractValueFromUpdateExpression;
+
+var _index = require('./index');
+
+var _index2 = _interopRequireDefault(_index);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Extractor function for an UpdateExpression type value node.
+ * An update expression is an expression with an update operator.
+ * For example, foo++ will evaluate to foo + 1.
+ *
+ * @param - value - AST Value object with type `UpdateExpression`
+ * @returns - The extracted value converted to correct type.
+ */
+function extractValueFromUpdateExpression(value) {
+  var operator = value.operator,
+      argument = value.argument,
+      prefix = value.prefix;
+
+
+  var val = (0, _index2.default)(argument);
+
+  switch (operator) {
+    case '++':
+      return prefix ? ++val : val++; // eslint-disable-line no-plusplus
+    case '--':
+      return prefix ? --val : val--; // eslint-disable-line no-plusplus
+    default:
+      return undefined;
+  }
+}