@theguild/federation-composition/esm/supergraph/validation/rules/no-inaccessible-on-implemented-interface-fields-rule.js

Open Source Composition library for Apollo Federation

import { GraphQLError } from 'graphql';
export function NoInaccessibleOnImplementedInterfaceFieldsRule(context, supergraphState) {
    return {
        ObjectTypeField(objectTypeState, fieldState) {
            if (fieldState.inaccessible && objectTypeState.interfaces.size) {
                for (const interfaceName of objectTypeState.interfaces) {
                    const interfaceType = supergraphState.interfaceTypes.get(interfaceName);
                    if (!interfaceType) {
                        continue;
                    }
                    const interfaceField = interfaceType.fields.get(fieldState.name);
                    if (!interfaceField) {
                        continue;
                    }
                    if (interfaceField.inaccessible === false) {
                        const objectTypeFieldSchemaCoordinate = objectTypeState.name + '.' + fieldState.name;
                        const interfaceFieldSchemaCoordinate = interfaceName + '.' + fieldState.name;
                        context.reportError(new GraphQLError(`Field "${objectTypeFieldSchemaCoordinate}" is @inaccessible but implements the interface field "${interfaceFieldSchemaCoordinate}", which is in the API schema.`, {
                            extensions: {
                                code: 'IMPLEMENTED_BY_INACCESSIBLE',
                            },
                        }));
                    }
                }
            }
        },
    };
}