62 lines
1.5 KiB
JavaScript
62 lines
1.5 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true,
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});
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exports.NoUnusedFragmentsRule = NoUnusedFragmentsRule;
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var _GraphQLError = require('../../error/GraphQLError.js');
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/**
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* No unused fragments
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*
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* A GraphQL document is only valid if all fragment definitions are spread
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* within operations, or spread within other fragments spread within operations.
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*
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* See https://spec.graphql.org/draft/#sec-Fragments-Must-Be-Used
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*/
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function NoUnusedFragmentsRule(context) {
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const operationDefs = [];
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const fragmentDefs = [];
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return {
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OperationDefinition(node) {
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operationDefs.push(node);
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return false;
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},
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FragmentDefinition(node) {
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fragmentDefs.push(node);
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return false;
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},
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Document: {
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leave() {
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const fragmentNameUsed = Object.create(null);
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for (const operation of operationDefs) {
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for (const fragment of context.getRecursivelyReferencedFragments(
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operation,
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)) {
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fragmentNameUsed[fragment.name.value] = true;
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}
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}
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for (const fragmentDef of fragmentDefs) {
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const fragName = fragmentDef.name.value;
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if (fragmentNameUsed[fragName] !== true) {
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context.reportError(
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new _GraphQLError.GraphQLError(
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`Fragment "${fragName}" is never used.`,
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{
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nodes: fragmentDef,
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},
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),
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);
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}
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}
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},
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},
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};
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}
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