36 lines
1009 B
JavaScript
36 lines
1009 B
JavaScript
import { GraphQLError } from '../../error/GraphQLError';
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export function duplicateInputFieldMessage(fieldName) {
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return "There can be only one input field named \"".concat(fieldName, "\".");
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}
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/**
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* Unique input field names
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*
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* A GraphQL input object value is only valid if all supplied fields are
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* uniquely named.
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*/
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export function UniqueInputFieldNames(context) {
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var knownNameStack = [];
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var knownNames = Object.create(null);
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return {
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ObjectValue: {
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enter: function enter() {
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knownNameStack.push(knownNames);
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knownNames = Object.create(null);
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},
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leave: function leave() {
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knownNames = knownNameStack.pop();
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}
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},
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ObjectField: function ObjectField(node) {
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var fieldName = node.name.value;
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if (knownNames[fieldName]) {
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context.reportError(new GraphQLError(duplicateInputFieldMessage(fieldName), [knownNames[fieldName], node.name]));
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} else {
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knownNames[fieldName] = node.name;
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}
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}
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};
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}
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