graphql/validation/rules/KnownFragmentNamesRule.mjs

A Query Language and Runtime which can target any service.

import { GraphQLError } from "../../error/GraphQLError.mjs";
export function KnownFragmentNamesRule(context) {
    return {
        FragmentSpread(node) {
            const fragmentName = node.name.value;
            const fragment = context.getFragment(fragmentName);
            if (!fragment) {
                context.reportError(new GraphQLError(`Unknown fragment "${fragmentName}".`, {
                    nodes: node.name,
                }));
            }
        },
    };
}
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