@graphql-tools/wrap
Version:
A set of utils for faster development of GraphQL tools
57 lines (56 loc) • 2.43 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.wrapSchema = void 0;
const graphql_1 = require("graphql");
const utils_1 = require("@graphql-tools/utils");
const delegate_1 = require("@graphql-tools/delegate");
const generateProxyingResolvers_js_1 = require("./generateProxyingResolvers.js");
exports.wrapSchema = (0, utils_1.memoize1)(function wrapSchema(subschemaConfig) {
const targetSchema = subschemaConfig.schema;
const proxyingResolvers = (0, generateProxyingResolvers_js_1.generateProxyingResolvers)(subschemaConfig);
const schema = createWrappingSchema(targetSchema, proxyingResolvers);
return (0, delegate_1.applySchemaTransforms)(schema, subschemaConfig);
});
function createWrappingSchema(schema, proxyingResolvers) {
return (0, utils_1.mapSchema)(schema, {
[utils_1.MapperKind.ROOT_OBJECT]: type => {
var _a;
const config = type.toConfig();
const fieldConfigMap = config.fields;
for (const fieldName in fieldConfigMap) {
const field = fieldConfigMap[fieldName];
if (field == null) {
continue;
}
fieldConfigMap[fieldName] = {
...field,
...(_a = proxyingResolvers[type.name]) === null || _a === void 0 ? void 0 : _a[fieldName],
};
}
return new graphql_1.GraphQLObjectType(config);
},
[utils_1.MapperKind.OBJECT_TYPE]: type => {
const config = type.toConfig();
config.isTypeOf = undefined;
for (const fieldName in config.fields) {
const field = config.fields[fieldName];
if (field == null) {
continue;
}
field.resolve = delegate_1.defaultMergedResolver;
field.subscribe = undefined;
}
return new graphql_1.GraphQLObjectType(config);
},
[utils_1.MapperKind.INTERFACE_TYPE]: type => {
const config = type.toConfig();
delete config.resolveType;
return new graphql_1.GraphQLInterfaceType(config);
},
[utils_1.MapperKind.UNION_TYPE]: type => {
const config = type.toConfig();
delete config.resolveType;
return new graphql_1.GraphQLUnionType(config);
},
});
}