@theguild/federation-composition
Version:
Open Source Composition library for Apollo Federation
67 lines (66 loc) • 2.71 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.OnlyInterfaceImplementationRule = OnlyInterfaceImplementationRule;
const graphql_1 = require("graphql");
function OnlyInterfaceImplementationRule(context) {
const { definitions } = context.getDocument();
let filled = false;
const typeNameToKind = new Map();
function fillTypeNameToKindMap() {
for (const node of definitions) {
switch (node.kind) {
case graphql_1.Kind.OBJECT_TYPE_DEFINITION:
case graphql_1.Kind.OBJECT_TYPE_EXTENSION:
typeNameToKind.set(node.name.value, "ObjectType");
break;
case graphql_1.Kind.INTERFACE_TYPE_DEFINITION:
case graphql_1.Kind.INTERFACE_TYPE_EXTENSION:
typeNameToKind.set(node.name.value, "InterfaceType");
break;
case graphql_1.Kind.UNION_TYPE_DEFINITION:
case graphql_1.Kind.UNION_TYPE_EXTENSION:
typeNameToKind.set(node.name.value, "UnionType");
break;
case graphql_1.Kind.ENUM_TYPE_DEFINITION:
case graphql_1.Kind.ENUM_TYPE_EXTENSION:
typeNameToKind.set(node.name.value, "EnumType");
break;
case graphql_1.Kind.SCALAR_TYPE_DEFINITION:
case graphql_1.Kind.SCALAR_TYPE_EXTENSION:
typeNameToKind.set(node.name.value, "ScalarType");
break;
case graphql_1.Kind.INPUT_OBJECT_TYPE_DEFINITION:
case graphql_1.Kind.INPUT_OBJECT_TYPE_EXTENSION:
typeNameToKind.set(node.name.value, "InputObjectType");
break;
}
}
filled = true;
}
function findKindByName(typeName) {
if (!filled) {
fillTypeNameToKindMap();
}
return typeNameToKind.get(typeName);
}
function check(node) {
if (!node.interfaces) {
return;
}
for (const interfaceNode of node.interfaces) {
const interfaceName = interfaceNode.name.value;
const kind = findKindByName(interfaceName);
if (kind && kind !== "InterfaceType") {
context.reportError(new graphql_1.GraphQLError(`Cannot implement non-interface type ${interfaceName} (of type ObjectType)`, {
extensions: {
code: "INVALID_GRAPHQL",
},
}));
}
}
}
return {
ObjectTypeDefinition: check,
ObjectTypeExtension: check,
};
}