32 lines
994 B
JavaScript
32 lines
994 B
JavaScript
import { GraphQLError } from '../../error/GraphQLError';
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export function duplicateOperationNameMessage(operationName) {
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return "There can be only one operation named \"".concat(operationName, "\".");
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}
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/**
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* Unique operation names
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*
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* A GraphQL document is only valid if all defined operations have unique names.
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*/
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export function UniqueOperationNames(context) {
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var knownOperationNames = Object.create(null);
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return {
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OperationDefinition: function OperationDefinition(node) {
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var operationName = node.name;
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if (operationName) {
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if (knownOperationNames[operationName.value]) {
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context.reportError(new GraphQLError(duplicateOperationNameMessage(operationName.value), [knownOperationNames[operationName.value], operationName]));
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} else {
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knownOperationNames[operationName.value] = operationName;
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}
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}
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return false;
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},
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FragmentDefinition: function FragmentDefinition() {
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return false;
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}
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};
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}
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