github-pages-deploy-action/node_modules/graphql/validation/rules/UniqueOperationNamesRule.mjs
2020-03-06 22:45:40 -05:00

29 lines
882 B
JavaScript

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