31 lines
851 B
Plaintext
31 lines
851 B
Plaintext
// @flow strict
|
|
|
|
import { GraphQLError } from '../../error/GraphQLError';
|
|
import { type ASTVisitor } from '../../language/visitor';
|
|
|
|
import { type ValidationContext } from '../ValidationContext';
|
|
|
|
export function unknownFragmentMessage(fragName: string): string {
|
|
return `Unknown fragment "${fragName}".`;
|
|
}
|
|
|
|
/**
|
|
* Known fragment names
|
|
*
|
|
* A GraphQL document is only valid if all `...Fragment` fragment spreads refer
|
|
* to fragments defined in the same document.
|
|
*/
|
|
export function KnownFragmentNames(context: ValidationContext): ASTVisitor {
|
|
return {
|
|
FragmentSpread(node) {
|
|
const fragmentName = node.name.value;
|
|
const fragment = context.getFragment(fragmentName);
|
|
if (!fragment) {
|
|
context.reportError(
|
|
new GraphQLError(unknownFragmentMessage(fragmentName), node.name),
|
|
);
|
|
}
|
|
},
|
|
};
|
|
}
|