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authorMinteck <contact@minteck.org>2023-02-23 19:34:56 +0100
committerMinteck <contact@minteck.org>2023-02-23 19:34:56 +0100
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tree75be5fba4368472fb11c8015aee026b2b9a71888 /school/node_modules/graphql/validation/rules/NoUnusedFragmentsRule.js.flow
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-// @flow strict
-import { GraphQLError } from '../../error/GraphQLError';
-
-import type { ASTVisitor } from '../../language/visitor';
-
-import type { ASTValidationContext } from '../ValidationContext';
-
-/**
- * No unused fragments
- *
- * A GraphQL document is only valid if all fragment definitions are spread
- * within operations, or spread within other fragments spread within operations.
- */
-export function NoUnusedFragmentsRule(
- context: ASTValidationContext,
-): ASTVisitor {
- const operationDefs = [];
- const fragmentDefs = [];
-
- return {
- OperationDefinition(node) {
- operationDefs.push(node);
- return false;
- },
- FragmentDefinition(node) {
- fragmentDefs.push(node);
- return false;
- },
- Document: {
- leave() {
- const fragmentNameUsed = Object.create(null);
- for (const operation of operationDefs) {
- for (const fragment of context.getRecursivelyReferencedFragments(
- operation,
- )) {
- fragmentNameUsed[fragment.name.value] = true;
- }
- }
-
- for (const fragmentDef of fragmentDefs) {
- const fragName = fragmentDef.name.value;
- if (fragmentNameUsed[fragName] !== true) {
- context.reportError(
- new GraphQLError(
- `Fragment "${fragName}" is never used.`,
- fragmentDef,
- ),
- );
- }
- }
- },
- },
- };
-}