Update - This is an automated commit

1 files changed, 31 insertions, 0 deletions

diff --git a/school/node_modules/graphql/validation/rules/UniqueVariableNamesRule.js b/school/node_modules/graphql/validation/rules/UniqueVariableNamesRule.js
new file mode 100644
index 0000000..d6cae4a
--- /dev/null
+++ b/school/node_modules/graphql/validation/rules/UniqueVariableNamesRule.js
@@ -0,0 +1,31 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.UniqueVariableNamesRule = UniqueVariableNamesRule;
+
+var _GraphQLError = require("../../error/GraphQLError.js");
+
+/**
+ * Unique variable names
+ *
+ * A GraphQL operation is only valid if all its variables are uniquely named.
+ */
+function UniqueVariableNamesRule(context) {
+  var knownVariableNames = Object.create(null);
+  return {
+    OperationDefinition: function OperationDefinition() {
+      knownVariableNames = Object.create(null);
+    },
+    VariableDefinition: function VariableDefinition(node) {
+      var variableName = node.variable.name.value;
+
+      if (knownVariableNames[variableName]) {
+        context.reportError(new _GraphQLError.GraphQLError("There can be only one variable named \"$".concat(variableName, "\"."), [knownVariableNames[variableName], node.variable.name]));
+      } else {
+        knownVariableNames[variableName] = node.variable.name;
+      }
+    }
+  };
+}