Spaces:
Running
Running
File size: 1,325 Bytes
d4b85c0 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 |
import { GraphQLError } from '../../error/GraphQLError.mjs';
/**
* 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.
*
* See https://spec.graphql.org/draft/#sec-Fragments-Must-Be-Used
*/
export function NoUnusedFragmentsRule(context) {
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.`, {
nodes: fragmentDef,
}),
);
}
}
},
},
};
}
|