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authorMinteck <contact@minteck.org>2023-01-10 14:54:04 +0100
committerMinteck <contact@minteck.org>2023-01-10 14:54:04 +0100
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Update - This is an automated commit
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+import { GraphQLError } from "../../error/GraphQLError.mjs";
+
+/**
+ * Unique variable names
+ *
+ * A GraphQL operation is only valid if all its variables are uniquely named.
+ */
+export 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("There can be only one variable named \"$".concat(variableName, "\"."), [knownVariableNames[variableName], node.variable.name]));
+ } else {
+ knownVariableNames[variableName] = node.variable.name;
+ }
+ }
+ };
+}