@graphql-tools/schema - npm Package Compare versions

Comparing version 6.0.0-alpha.1 to 6.0.0-alpha-0bfc960.0

addCatchUndefinedToSchema.d.ts

 import { GraphQLSchema } from 'graphql';
-export declare function addCatchUndefinedToSchema(schema: GraphQLSchema): void;
+export declare function addCatchUndefinedToSchema(schema: GraphQLSchema): GraphQLSchema;

addErrorLoggingToSchema.d.ts

 import { GraphQLSchema } from 'graphql';
 import { ILogger } from './types';
-export declare function addErrorLoggingToSchema(schema: GraphQLSchema, logger?: ILogger): void;
+export declare function addErrorLoggingToSchema(schema: GraphQLSchema, logger?: ILogger): GraphQLSchema;

addSchemaLevelResolver.d.ts

 import { GraphQLSchema, GraphQLFieldResolver } from 'graphql';
-export declare function addSchemaLevelResolver(schema: GraphQLSchema, fn: GraphQLFieldResolver<any, any>): void;
+export declare function addSchemaLevelResolver(schema: GraphQLSchema, fn: GraphQLFieldResolver<any, any>): GraphQLSchema;

attachDirectiveResolvers.d.ts

 import { GraphQLSchema } from 'graphql';
 import { IDirectiveResolvers } from '@graphql-tools/utils';
-export declare function attachDirectiveResolvers(schema: GraphQLSchema, directiveResolvers: IDirectiveResolvers): void;
+export declare function attachDirectiveResolvers(schema: GraphQLSchema, directiveResolvers: IDirectiveResolvers): GraphQLSchema;

extendResolversFromInterfaces.d.ts

 import { GraphQLSchema } from 'graphql';
 import { IResolvers } from '@graphql-tools/utils';
-export declare function extendResolversFromInterfaces(schema: GraphQLSchema, resolvers: IResolvers): {};
+export declare function extendResolversFromInterfaces(schema: GraphQLSchema, resolvers: IResolvers): IResolvers;

index.cjs.js

@@ -12,20 +12,21 @@ 'use strict';
     // TODO test that schema is a schema, fn is a function
-    const rootTypes = [schema.getQueryType(), schema.getMutationType(), schema.getSubscriptionType()].filter(x => Boolean(x));
-    rootTypes.forEach(type => {
-        if (type != null) {
+    const fnToRunOnlyOnce = runAtMostOncePerRequest(fn);
+    return utils.mapSchema(schema, {
+        [utils.MapperKind.ROOT_FIELD]: (fieldConfig, _fieldName, typeName, schema) => {
             // XXX this should run at most once per request to simulate a true root resolver
             // for graphql-js this is an approximation that works with queries but not mutations
-            const rootResolveFn = runAtMostOncePerRequest(fn);
-            const fields = type.getFields();
-            Object.keys(fields).forEach(fieldName => {
-                // XXX if the type is a subscription, a same query AST will be ran multiple times so we
-                // deactivate here the runOnce if it's a subscription. This may not be optimal though...
-                if (type === schema.getSubscriptionType()) {
-                    fields[fieldName].resolve = wrapResolver(fields[fieldName].resolve, fn);
-                }
-                else {
-                    fields[fieldName].resolve = wrapResolver(fields[fieldName].resolve, rootResolveFn);
-                }
-            });
-        }
+            // XXX if the type is a subscription, a same query AST will be ran multiple times so we
+            // deactivate here the runOnce if it's a subscription. This may not be optimal though...
+            const subscription = schema.getSubscriptionType();
+            if (subscription != null && subscription.name === typeName) {
+                return {
+                    ...fieldConfig,
+                    resolve: wrapResolver(fieldConfig.resolve, fn),
+                };
+            }
+            return {
+                ...fieldConfig,
+                resolve: wrapResolver(fieldConfig.resolve, fnToRunOnlyOnce),
+            };
+        },
     });
@@ -121,23 +122,25 @@ }
     }
-    const schemaDirectives = Object.create(null);
-    Object.keys(directiveResolvers).forEach(directiveName => {
-        schemaDirectives[directiveName] = class extends utils.SchemaDirectiveVisitor {
-            visitFieldDefinition(field) {
-                const resolver = directiveResolvers[directiveName];
-                const originalResolver = field.resolve != null ? field.resolve : graphql.defaultFieldResolver;
-                const directiveArgs = this.args;
-                field.resolve = (...args) => {
-                    const [source /* original args */, , context, info] = args;
-                    return resolver(() => new Promise((resolve, reject) => {
-                        const result = originalResolver.apply(field, args);
-                        if (result instanceof Error) {
-                            reject(result);
-                        }
-                        resolve(result);
-                    }), source, directiveArgs, context, info);
-                };
-            }
-        };
+    return utils.mapSchema(schema, {
+        [utils.MapperKind.OBJECT_FIELD]: fieldConfig => {
+            const newFieldConfig = { ...fieldConfig };
+            const directives = utils.getDirectives(schema, fieldConfig);
+            Object.keys(directives).forEach(directiveName => {
+                if (directiveResolvers[directiveName]) {
+                    const resolver = directiveResolvers[directiveName];
+                    const originalResolver = newFieldConfig.resolve != null ? newFieldConfig.resolve : graphql.defaultFieldResolver;
+                    const directiveArgs = directives[directiveName];
+                    newFieldConfig.resolve = (source, originalArgs, context, info) => {
+                        return resolver(() => new Promise((resolve, reject) => {
+                            const result = originalResolver(source, originalArgs, context, info);
+                            if (result instanceof Error) {
+                                reject(result);
+                            }
+                            resolve(result);
+                        }), source, directiveArgs, context, info);
+                    };
+                }
+            });
+            return newFieldConfig;
+        },
     });
-    utils.SchemaDirectiveVisitor.visitSchemaDirectives(schema, schemaDirectives);
 }
@@ -343,3 +346,3 @@
         : schemaOrOptions;
-    const { schema, resolvers: inputResolvers, defaultFieldResolver, resolverValidationOptions = {}, inheritResolversFromInterfaces = false, } = options;
+    let { schema, resolvers: inputResolvers, defaultFieldResolver, resolverValidationOptions = {}, inheritResolversFromInterfaces = false, } = options;
     const { allowResolversNotInSchema = false, requireResolversForResolveType } = resolverValidationOptions;
@@ -349,3 +352,2 @@ const resolvers = inheritResolversFromInterfaces
         : inputResolvers;
-    const typeMap = schema.getTypeMap();
     Object.keys(resolvers).forEach(typeName => {
@@ -363,104 +365,149 @@ const resolverValue = resolvers[typeName];
             }
+            const type = schema.getType(typeName);
+            if (type == null) {
+                if (allowResolversNotInSchema) {
+                    return;
+                }
+                throw new Error(`"${typeName}" defined in resolvers, but not in schema`);
+            }
+            else if (graphql.isSpecifiedScalarType(type)) {
+                // allow -- without recommending -- overriding of specified scalar types
+                const resolverValue = resolvers[typeName];
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        type[fieldName.substring(2)] = resolverValue[fieldName];
+                    }
+                    else {
+                        type[fieldName] = resolverValue[fieldName];
+                    }
+                });
+            }
         }
-        const type = schema.getType(typeName);
-        if (!type && typeName !== '__schema') {
-            if (allowResolversNotInSchema) {
-                return;
+    });
+    schema = utils.mapSchema(schema, {
+        [utils.MapperKind.SCALAR_TYPE]: type => {
+            const config = type.toConfig();
+            const resolverValue = resolvers[type.name];
+            if (!graphql.isSpecifiedScalarType(type) && resolverValue != null) {
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
+                    }
+                    else {
+                        config[fieldName] = resolverValue[fieldName];
+                    }
+                });
+                return new graphql.GraphQLScalarType(config);
             }
-            throw new Error(`"${typeName}" defined in resolvers, but not in schema`);
-        }
-        if (graphql.isScalarType(type)) {
-            // Support -- without recommending -- overriding default scalar types
-            Object.keys(resolverValue).forEach(fieldName => {
-                if (fieldName.startsWith('__')) {
-                    type[fieldName.substring(2)] = resolverValue[fieldName];
-                }
-                else {
-                    type[fieldName] = resolverValue[fieldName];
-                }
-            });
-        }
-        else if (graphql.isEnumType(type)) {
-            Object.keys(resolverValue).forEach(fieldName => {
-                if (fieldName.startsWith('__')) {
-                    type[fieldName.substring(2)] = resolverValue[fieldName];
-                }
-                else if (!type.getValue(fieldName)) {
-                    if (allowResolversNotInSchema) {
+        },
+        [utils.MapperKind.ENUM_TYPE]: type => {
+            const resolverValue = resolvers[type.name];
+            const config = type.toConfig();
+            const enumValueConfigMap = config.values;
+            if (resolverValue != null) {
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
+                    }
+                    else if (!enumValueConfigMap[fieldName]) {
+                        if (allowResolversNotInSchema) {
+                            return;
+                        }
+                        throw new Error(`${type.name}.${fieldName} was defined in resolvers, but not present within ${type.name}`);
+                    }
+                    else {
+                        enumValueConfigMap[fieldName].value = resolverValue[fieldName];
+                    }
+                });
+                return new graphql.GraphQLEnumType(config);
+            }
+        },
+        [utils.MapperKind.UNION_TYPE]: type => {
+            const resolverValue = resolvers[type.name];
+            if (resolverValue != null) {
+                const config = type.toConfig();
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        // this is for isTypeOf and resolveType and all the other stuff.
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
                         return;
                     }
-                    throw new Error(`${typeName}.${fieldName} was defined in resolvers, but not present within ${typeName}`);
-                }
-            });
-            const config = type.toConfig();
-            const values = type.getValues();
-            const newValues = values.reduce((prev, value) => ({
-                ...prev,
-                [value.name]: {
-                    value: Object.keys(resolverValue).includes(value.name) ? resolverValue[value.name] : value.name,
-                    deprecationReason: value.deprecationReason,
-                    description: value.description,
-                    astNode: value.astNode,
-                },
-            }), {});
-            // healSchema called later to update all fields to new type
-            typeMap[typeName] = new graphql.GraphQLEnumType({
-                ...config,
-                values: newValues,
-            });
-        }
-        else if (graphql.isUnionType(type)) {
-            Object.keys(resolverValue).forEach(fieldName => {
-                if (fieldName.startsWith('__')) {
-                    // this is for isTypeOf and resolveType and all the other stuff.
-                    type[fieldName.substring(2)] = resolverValue[fieldName];
-                    return;
-                }
-                if (allowResolversNotInSchema) {
-                    return;
-                }
-                throw new Error(`${typeName}.${fieldName} was defined in resolvers, but ${typeName} is not an object or interface type`);
-            });
-        }
-        else if (graphql.isObjectType(type) || graphql.isInterfaceType(type)) {
-            Object.keys(resolverValue).forEach(fieldName => {
-                if (fieldName.startsWith('__')) {
-                    // this is for isTypeOf and resolveType and all the other stuff.
-                    type[fieldName.substring(2)] = resolverValue[fieldName];
-                    return;
-                }
-                const fields = type.getFields();
-                const field = fields[fieldName];
-                if (field == null) {
                     if (allowResolversNotInSchema) {
                         return;
                     }
-                    throw new Error(`${typeName}.${fieldName} defined in resolvers, but not in schema`);
-                }
+                    throw new Error(`${type.name}.${fieldName} was defined in resolvers, but ${type.name} is not an object or interface type`);
+                });
+                return new graphql.GraphQLUnionType(config);
+            }
+        },
+        [utils.MapperKind.OBJECT_TYPE]: type => {
+            const resolverValue = resolvers[type.name];
+            if (resolverValue != null) {
+                const config = type.toConfig();
+                const fields = config.fields;
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
+                        return;
+                    }
+                    const field = fields[fieldName];
+                    if (field == null) {
+                        if (allowResolversNotInSchema) {
+                            return;
+                        }
+                        throw new Error(`${type.name}.${fieldName} defined in resolvers, but not in schema`);
+                    }
+                });
+                return new graphql.GraphQLObjectType(config);
+            }
+        },
+        [utils.MapperKind.INTERFACE_TYPE]: type => {
+            const resolverValue = resolvers[type.name];
+            if (resolverValue != null) {
+                const config = type.toConfig();
+                const fields = config.fields;
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
+                        return;
+                    }
+                    const field = fields[fieldName];
+                    if (field == null) {
+                        if (allowResolversNotInSchema) {
+                            return;
+                        }
+                        throw new Error(`${type.name}.${fieldName} defined in resolvers, but not in schema`);
+                    }
+                });
+                return new graphql.GraphQLInterfaceType(config);
+            }
+        },
+        [utils.MapperKind.COMPOSITE_FIELD]: (fieldConfig, fieldName, typeName) => {
+            const resolverValue = resolvers[typeName];
+            if (resolverValue != null) {
                 const fieldResolve = resolverValue[fieldName];
-                if (typeof fieldResolve === 'function') {
-                    // for convenience. Allows shorter syntax in resolver definition file
-                    field.resolve = fieldResolve;
-                }
-                else {
-                    if (typeof fieldResolve !== 'object') {
-                        throw new Error(`Resolver ${typeName}.${fieldName} must be object or function`);
+                if (fieldResolve != null) {
+                    const newFieldConfig = { ...fieldConfig };
+                    if (typeof fieldResolve === 'function') {
+                        // for convenience. Allows shorter syntax in resolver definition file
+                        newFieldConfig.resolve = fieldResolve;
                     }
-                    setFieldProperties(field, fieldResolve);
+                    else {
+                        if (typeof fieldResolve !== 'object') {
+                            throw new Error(`Resolver ${typeName}.${fieldName} must be object or function`);
+                        }
+                        setFieldProperties(newFieldConfig, fieldResolve);
+                    }
+                    return newFieldConfig;
                 }
-            });
-        }
+            }
+        },
     });
     checkForResolveTypeResolver(schema, requireResolversForResolveType);
-    // serialize all default values prior to healing fields with new scalar/enum types.
-    utils.forEachDefaultValue(schema, utils.serializeInputValue);
-    // schema may have new scalar/enum types that require healing
-    utils.healSchema(schema);
-    // reparse all default values with new parsing functions.
-    utils.forEachDefaultValue(schema, utils.parseInputValue);
     if (defaultFieldResolver != null) {
-        utils.forEachField(schema, field => {
-            if (!field.resolve) {
-                field.resolve = defaultFieldResolver;
-            }
+        schema = utils.mapSchema(schema, {
+            [utils.MapperKind.OBJECT_FIELD]: fieldConfig => ({
+                ...fieldConfig,
+                resolve: fieldConfig.resolve != null ? fieldConfig.resolve : defaultFieldResolver,
+            }),
         });
@@ -483,5 +530,7 @@ }
     }
-    utils.forEachField(schema, (field, typeName, fieldName) => {
-        const errorHint = `${typeName}.${fieldName}`;
-        field.resolve = decorateWithLogger(field.resolve, logger, errorHint);
+    return utils.mapSchema(schema, {
+        [utils.MapperKind.OBJECT_FIELD]: (fieldConfig, fieldName, typeName) => ({
+            ...fieldConfig,
+            resolve: decorateWithLogger(fieldConfig.resolve, logger, `${typeName}.${fieldName}`),
+        }),
     });
@@ -501,9 +550,11 @@ }
 function addCatchUndefinedToSchema(schema) {
-    utils.forEachField(schema, (field, typeName, fieldName) => {
-        const errorHint = `${typeName}.${fieldName}`;
-        field.resolve = decorateToCatchUndefined(field.resolve, errorHint);
+    return utils.mapSchema(schema, {
+        [utils.MapperKind.OBJECT_FIELD]: (fieldConfig, fieldName, typeName) => ({
+            ...fieldConfig,
+            resolve: decorateToCatchUndefined(fieldConfig.resolve, `${typeName}.${fieldName}`),
+        }),
     });
 }
 
-function makeExecutableSchema({ typeDefs, resolvers = {}, logger, allowUndefinedInResolve = true, resolverValidationOptions = {}, directiveResolvers, schemaDirectives, parseOptions = {}, inheritResolversFromInterfaces = false, }) {
+function makeExecutableSchema({ typeDefs, resolvers = {}, logger, allowUndefinedInResolve = true, resolverValidationOptions = {}, directiveResolvers, schemaDirectives, schemaTransforms = [], parseOptions = {}, inheritResolversFromInterfaces = false, }) {
     // Validate and clean up arguments
@@ -519,4 +570,4 @@ if (typeof resolverValidationOptions !== 'object') {
     // Arguments are now validated and cleaned up
-    const schema = buildSchemaFromTypeDefinitions(typeDefs, parseOptions);
-    addResolversToSchema({
+    let schema = buildSchemaFromTypeDefinitions(typeDefs, parseOptions);
+    schema = addResolversToSchema({
         schema,
@@ -529,6 +580,6 @@ resolvers: resolverMap,
     if (!allowUndefinedInResolve) {
-        addCatchUndefinedToSchema(schema);
+        schema = addCatchUndefinedToSchema(schema);
     }
     if (logger != null) {
-        addErrorLoggingToSchema(schema, logger);
+        schema = addErrorLoggingToSchema(schema, logger);
     }
@@ -538,6 +589,11 @@ if (typeof resolvers['__schema'] === 'function') {
         // not doing that now, because I'd have to rewrite a lot of tests.
-        addSchemaLevelResolver(schema, resolvers['__schema']);
+        schema = addSchemaLevelResolver(schema, resolvers['__schema']);
     }
+    schemaTransforms.forEach(schemaTransform => {
+        schema = schemaTransform(schema);
+    });
+    // directive resolvers are implemented using SchemaDirectiveVisitor.visitSchemaDirectives
+    // schema visiting modifies the schema in place
     if (directiveResolvers != null) {
-        attachDirectiveResolvers(schema, directiveResolvers);
+        schema = attachDirectiveResolvers(schema, directiveResolvers);
     }
@@ -544,0 +600,0 @@ if (schemaDirectives != null) {

index.esm.js

@@ -1,3 +0,3 @@
-import { defaultFieldResolver, isScalarType, getNamedType, Kind, print, buildASTSchema, extendSchema, parse, isAbstractType, isSchema, isEnumType, GraphQLEnumType, isUnionType, isObjectType, isInterfaceType } from 'graphql';
-import { forEachField, SchemaDirectiveVisitor, forEachDefaultValue, serializeInputValue, healSchema, parseInputValue, mergeDeep } from '@graphql-tools/utils';
+import { defaultFieldResolver, isScalarType, getNamedType, Kind, print, buildASTSchema, extendSchema, parse, isAbstractType, isSchema, isSpecifiedScalarType, GraphQLScalarType, GraphQLEnumType, GraphQLUnionType, GraphQLObjectType, GraphQLInterfaceType } from 'graphql';
+import { mapSchema, MapperKind, forEachField, getDirectives, mergeDeep, SchemaDirectiveVisitor } from '@graphql-tools/utils';
 
@@ -8,20 +8,21 @@ // wraps all resolvers of query, mutation or subscription fields
     // TODO test that schema is a schema, fn is a function
-    const rootTypes = [schema.getQueryType(), schema.getMutationType(), schema.getSubscriptionType()].filter(x => Boolean(x));
-    rootTypes.forEach(type => {
-        if (type != null) {
+    const fnToRunOnlyOnce = runAtMostOncePerRequest(fn);
+    return mapSchema(schema, {
+        [MapperKind.ROOT_FIELD]: (fieldConfig, _fieldName, typeName, schema) => {
             // XXX this should run at most once per request to simulate a true root resolver
             // for graphql-js this is an approximation that works with queries but not mutations
-            const rootResolveFn = runAtMostOncePerRequest(fn);
-            const fields = type.getFields();
-            Object.keys(fields).forEach(fieldName => {
-                // XXX if the type is a subscription, a same query AST will be ran multiple times so we
-                // deactivate here the runOnce if it's a subscription. This may not be optimal though...
-                if (type === schema.getSubscriptionType()) {
-                    fields[fieldName].resolve = wrapResolver(fields[fieldName].resolve, fn);
-                }
-                else {
-                    fields[fieldName].resolve = wrapResolver(fields[fieldName].resolve, rootResolveFn);
-                }
-            });
-        }
+            // XXX if the type is a subscription, a same query AST will be ran multiple times so we
+            // deactivate here the runOnce if it's a subscription. This may not be optimal though...
+            const subscription = schema.getSubscriptionType();
+            if (subscription != null && subscription.name === typeName) {
+                return {
+                    ...fieldConfig,
+                    resolve: wrapResolver(fieldConfig.resolve, fn),
+                };
+            }
+            return {
+                ...fieldConfig,
+                resolve: wrapResolver(fieldConfig.resolve, fnToRunOnlyOnce),
+            };
+        },
     });
@@ -117,23 +118,25 @@ }
     }
-    const schemaDirectives = Object.create(null);
-    Object.keys(directiveResolvers).forEach(directiveName => {
-        schemaDirectives[directiveName] = class extends SchemaDirectiveVisitor {
-            visitFieldDefinition(field) {
-                const resolver = directiveResolvers[directiveName];
-                const originalResolver = field.resolve != null ? field.resolve : defaultFieldResolver;
-                const directiveArgs = this.args;
-                field.resolve = (...args) => {
-                    const [source /* original args */, , context, info] = args;
-                    return resolver(() => new Promise((resolve, reject) => {
-                        const result = originalResolver.apply(field, args);
-                        if (result instanceof Error) {
-                            reject(result);
-                        }
-                        resolve(result);
-                    }), source, directiveArgs, context, info);
-                };
-            }
-        };
+    return mapSchema(schema, {
+        [MapperKind.OBJECT_FIELD]: fieldConfig => {
+            const newFieldConfig = { ...fieldConfig };
+            const directives = getDirectives(schema, fieldConfig);
+            Object.keys(directives).forEach(directiveName => {
+                if (directiveResolvers[directiveName]) {
+                    const resolver = directiveResolvers[directiveName];
+                    const originalResolver = newFieldConfig.resolve != null ? newFieldConfig.resolve : defaultFieldResolver;
+                    const directiveArgs = directives[directiveName];
+                    newFieldConfig.resolve = (source, originalArgs, context, info) => {
+                        return resolver(() => new Promise((resolve, reject) => {
+                            const result = originalResolver(source, originalArgs, context, info);
+                            if (result instanceof Error) {
+                                reject(result);
+                            }
+                            resolve(result);
+                        }), source, directiveArgs, context, info);
+                    };
+                }
+            });
+            return newFieldConfig;
+        },
     });
-    SchemaDirectiveVisitor.visitSchemaDirectives(schema, schemaDirectives);
 }
@@ -339,3 +342,3 @@
         : schemaOrOptions;
-    const { schema, resolvers: inputResolvers, defaultFieldResolver, resolverValidationOptions = {}, inheritResolversFromInterfaces = false, } = options;
+    let { schema, resolvers: inputResolvers, defaultFieldResolver, resolverValidationOptions = {}, inheritResolversFromInterfaces = false, } = options;
     const { allowResolversNotInSchema = false, requireResolversForResolveType } = resolverValidationOptions;
@@ -345,3 +348,2 @@ const resolvers = inheritResolversFromInterfaces
         : inputResolvers;
-    const typeMap = schema.getTypeMap();
     Object.keys(resolvers).forEach(typeName => {
@@ -359,104 +361,149 @@ const resolverValue = resolvers[typeName];
             }
+            const type = schema.getType(typeName);
+            if (type == null) {
+                if (allowResolversNotInSchema) {
+                    return;
+                }
+                throw new Error(`"${typeName}" defined in resolvers, but not in schema`);
+            }
+            else if (isSpecifiedScalarType(type)) {
+                // allow -- without recommending -- overriding of specified scalar types
+                const resolverValue = resolvers[typeName];
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        type[fieldName.substring(2)] = resolverValue[fieldName];
+                    }
+                    else {
+                        type[fieldName] = resolverValue[fieldName];
+                    }
+                });
+            }
         }
-        const type = schema.getType(typeName);
-        if (!type && typeName !== '__schema') {
-            if (allowResolversNotInSchema) {
-                return;
+    });
+    schema = mapSchema(schema, {
+        [MapperKind.SCALAR_TYPE]: type => {
+            const config = type.toConfig();
+            const resolverValue = resolvers[type.name];
+            if (!isSpecifiedScalarType(type) && resolverValue != null) {
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
+                    }
+                    else {
+                        config[fieldName] = resolverValue[fieldName];
+                    }
+                });
+                return new GraphQLScalarType(config);
             }
-            throw new Error(`"${typeName}" defined in resolvers, but not in schema`);
-        }
-        if (isScalarType(type)) {
-            // Support -- without recommending -- overriding default scalar types
-            Object.keys(resolverValue).forEach(fieldName => {
-                if (fieldName.startsWith('__')) {
-                    type[fieldName.substring(2)] = resolverValue[fieldName];
-                }
-                else {
-                    type[fieldName] = resolverValue[fieldName];
-                }
-            });
-        }
-        else if (isEnumType(type)) {
-            Object.keys(resolverValue).forEach(fieldName => {
-                if (fieldName.startsWith('__')) {
-                    type[fieldName.substring(2)] = resolverValue[fieldName];
-                }
-                else if (!type.getValue(fieldName)) {
-                    if (allowResolversNotInSchema) {
+        },
+        [MapperKind.ENUM_TYPE]: type => {
+            const resolverValue = resolvers[type.name];
+            const config = type.toConfig();
+            const enumValueConfigMap = config.values;
+            if (resolverValue != null) {
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
+                    }
+                    else if (!enumValueConfigMap[fieldName]) {
+                        if (allowResolversNotInSchema) {
+                            return;
+                        }
+                        throw new Error(`${type.name}.${fieldName} was defined in resolvers, but not present within ${type.name}`);
+                    }
+                    else {
+                        enumValueConfigMap[fieldName].value = resolverValue[fieldName];
+                    }
+                });
+                return new GraphQLEnumType(config);
+            }
+        },
+        [MapperKind.UNION_TYPE]: type => {
+            const resolverValue = resolvers[type.name];
+            if (resolverValue != null) {
+                const config = type.toConfig();
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        // this is for isTypeOf and resolveType and all the other stuff.
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
                         return;
                     }
-                    throw new Error(`${typeName}.${fieldName} was defined in resolvers, but not present within ${typeName}`);
-                }
-            });
-            const config = type.toConfig();
-            const values = type.getValues();
-            const newValues = values.reduce((prev, value) => ({
-                ...prev,
-                [value.name]: {
-                    value: Object.keys(resolverValue).includes(value.name) ? resolverValue[value.name] : value.name,
-                    deprecationReason: value.deprecationReason,
-                    description: value.description,
-                    astNode: value.astNode,
-                },
-            }), {});
-            // healSchema called later to update all fields to new type
-            typeMap[typeName] = new GraphQLEnumType({
-                ...config,
-                values: newValues,
-            });
-        }
-        else if (isUnionType(type)) {
-            Object.keys(resolverValue).forEach(fieldName => {
-                if (fieldName.startsWith('__')) {
-                    // this is for isTypeOf and resolveType and all the other stuff.
-                    type[fieldName.substring(2)] = resolverValue[fieldName];
-                    return;
-                }
-                if (allowResolversNotInSchema) {
-                    return;
-                }
-                throw new Error(`${typeName}.${fieldName} was defined in resolvers, but ${typeName} is not an object or interface type`);
-            });
-        }
-        else if (isObjectType(type) || isInterfaceType(type)) {
-            Object.keys(resolverValue).forEach(fieldName => {
-                if (fieldName.startsWith('__')) {
-                    // this is for isTypeOf and resolveType and all the other stuff.
-                    type[fieldName.substring(2)] = resolverValue[fieldName];
-                    return;
-                }
-                const fields = type.getFields();
-                const field = fields[fieldName];
-                if (field == null) {
                     if (allowResolversNotInSchema) {
                         return;
                     }
-                    throw new Error(`${typeName}.${fieldName} defined in resolvers, but not in schema`);
-                }
+                    throw new Error(`${type.name}.${fieldName} was defined in resolvers, but ${type.name} is not an object or interface type`);
+                });
+                return new GraphQLUnionType(config);
+            }
+        },
+        [MapperKind.OBJECT_TYPE]: type => {
+            const resolverValue = resolvers[type.name];
+            if (resolverValue != null) {
+                const config = type.toConfig();
+                const fields = config.fields;
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
+                        return;
+                    }
+                    const field = fields[fieldName];
+                    if (field == null) {
+                        if (allowResolversNotInSchema) {
+                            return;
+                        }
+                        throw new Error(`${type.name}.${fieldName} defined in resolvers, but not in schema`);
+                    }
+                });
+                return new GraphQLObjectType(config);
+            }
+        },
+        [MapperKind.INTERFACE_TYPE]: type => {
+            const resolverValue = resolvers[type.name];
+            if (resolverValue != null) {
+                const config = type.toConfig();
+                const fields = config.fields;
+                Object.keys(resolverValue).forEach(fieldName => {
+                    if (fieldName.startsWith('__')) {
+                        config[fieldName.substring(2)] = resolverValue[fieldName];
+                        return;
+                    }
+                    const field = fields[fieldName];
+                    if (field == null) {
+                        if (allowResolversNotInSchema) {
+                            return;
+                        }
+                        throw new Error(`${type.name}.${fieldName} defined in resolvers, but not in schema`);
+                    }
+                });
+                return new GraphQLInterfaceType(config);
+            }
+        },
+        [MapperKind.COMPOSITE_FIELD]: (fieldConfig, fieldName, typeName) => {
+            const resolverValue = resolvers[typeName];
+            if (resolverValue != null) {
                 const fieldResolve = resolverValue[fieldName];
-                if (typeof fieldResolve === 'function') {
-                    // for convenience. Allows shorter syntax in resolver definition file
-                    field.resolve = fieldResolve;
-                }
-                else {
-                    if (typeof fieldResolve !== 'object') {
-                        throw new Error(`Resolver ${typeName}.${fieldName} must be object or function`);
+                if (fieldResolve != null) {
+                    const newFieldConfig = { ...fieldConfig };
+                    if (typeof fieldResolve === 'function') {
+                        // for convenience. Allows shorter syntax in resolver definition file
+                        newFieldConfig.resolve = fieldResolve;
                     }
-                    setFieldProperties(field, fieldResolve);
+                    else {
+                        if (typeof fieldResolve !== 'object') {
+                            throw new Error(`Resolver ${typeName}.${fieldName} must be object or function`);
+                        }
+                        setFieldProperties(newFieldConfig, fieldResolve);
+                    }
+                    return newFieldConfig;
                 }
-            });
-        }
+            }
+        },
     });
     checkForResolveTypeResolver(schema, requireResolversForResolveType);
-    // serialize all default values prior to healing fields with new scalar/enum types.
-    forEachDefaultValue(schema, serializeInputValue);
-    // schema may have new scalar/enum types that require healing
-    healSchema(schema);
-    // reparse all default values with new parsing functions.
-    forEachDefaultValue(schema, parseInputValue);
     if (defaultFieldResolver != null) {
-        forEachField(schema, field => {
-            if (!field.resolve) {
-                field.resolve = defaultFieldResolver;
-            }
+        schema = mapSchema(schema, {
+            [MapperKind.OBJECT_FIELD]: fieldConfig => ({
+                ...fieldConfig,
+                resolve: fieldConfig.resolve != null ? fieldConfig.resolve : defaultFieldResolver,
+            }),
         });
@@ -479,5 +526,7 @@ }
     }
-    forEachField(schema, (field, typeName, fieldName) => {
-        const errorHint = `${typeName}.${fieldName}`;
-        field.resolve = decorateWithLogger(field.resolve, logger, errorHint);
+    return mapSchema(schema, {
+        [MapperKind.OBJECT_FIELD]: (fieldConfig, fieldName, typeName) => ({
+            ...fieldConfig,
+            resolve: decorateWithLogger(fieldConfig.resolve, logger, `${typeName}.${fieldName}`),
+        }),
     });
@@ -497,9 +546,11 @@ }
 function addCatchUndefinedToSchema(schema) {
-    forEachField(schema, (field, typeName, fieldName) => {
-        const errorHint = `${typeName}.${fieldName}`;
-        field.resolve = decorateToCatchUndefined(field.resolve, errorHint);
+    return mapSchema(schema, {
+        [MapperKind.OBJECT_FIELD]: (fieldConfig, fieldName, typeName) => ({
+            ...fieldConfig,
+            resolve: decorateToCatchUndefined(fieldConfig.resolve, `${typeName}.${fieldName}`),
+        }),
     });
 }
 
-function makeExecutableSchema({ typeDefs, resolvers = {}, logger, allowUndefinedInResolve = true, resolverValidationOptions = {}, directiveResolvers, schemaDirectives, parseOptions = {}, inheritResolversFromInterfaces = false, }) {
+function makeExecutableSchema({ typeDefs, resolvers = {}, logger, allowUndefinedInResolve = true, resolverValidationOptions = {}, directiveResolvers, schemaDirectives, schemaTransforms = [], parseOptions = {}, inheritResolversFromInterfaces = false, }) {
     // Validate and clean up arguments
@@ -515,4 +566,4 @@ if (typeof resolverValidationOptions !== 'object') {
     // Arguments are now validated and cleaned up
-    const schema = buildSchemaFromTypeDefinitions(typeDefs, parseOptions);
-    addResolversToSchema({
+    let schema = buildSchemaFromTypeDefinitions(typeDefs, parseOptions);
+    schema = addResolversToSchema({
         schema,
@@ -525,6 +576,6 @@ resolvers: resolverMap,
     if (!allowUndefinedInResolve) {
-        addCatchUndefinedToSchema(schema);
+        schema = addCatchUndefinedToSchema(schema);
     }
     if (logger != null) {
-        addErrorLoggingToSchema(schema, logger);
+        schema = addErrorLoggingToSchema(schema, logger);
     }
@@ -534,6 +585,11 @@ if (typeof resolvers['__schema'] === 'function') {
         // not doing that now, because I'd have to rewrite a lot of tests.
-        addSchemaLevelResolver(schema, resolvers['__schema']);
+        schema = addSchemaLevelResolver(schema, resolvers['__schema']);
     }
+    schemaTransforms.forEach(schemaTransform => {
+        schema = schemaTransform(schema);
+    });
+    // directive resolvers are implemented using SchemaDirectiveVisitor.visitSchemaDirectives
+    // schema visiting modifies the schema in place
     if (directiveResolvers != null) {
-        attachDirectiveResolvers(schema, directiveResolvers);
+        schema = attachDirectiveResolvers(schema, directiveResolvers);
     }
@@ -540,0 +596,0 @@ if (schemaDirectives != null) {

makeExecutableSchema.d.ts

 import { IExecutableSchemaDefinition } from './types';
-export declare function makeExecutableSchema<TContext = any>({ typeDefs, resolvers, logger, allowUndefinedInResolve, resolverValidationOptions, directiveResolvers, schemaDirectives, parseOptions, inheritResolversFromInterfaces, }: IExecutableSchemaDefinition<TContext>): import("graphql").GraphQLSchema;
+export declare function makeExecutableSchema<TContext = any>({ typeDefs, resolvers, logger, allowUndefinedInResolve, resolverValidationOptions, directiveResolvers, schemaDirectives, schemaTransforms, parseOptions, inheritResolversFromInterfaces, }: IExecutableSchemaDefinition<TContext>): import("graphql").GraphQLSchema;

package.json

 {
   "name": "@graphql-tools/schema",
-  "version": "6.0.0-alpha.1",
+  "version": "6.0.0-alpha-0bfc960.0",
   "description": "A set of utils for faster development of GraphQL tools",
@@ -9,3 +9,3 @@ "peerDependencies": {
   "dependencies": {
-    "@graphql-tools/utils": "6.0.0-alpha.1",
+    "@graphql-tools/utils": "6.0.0-alpha-0bfc960.0",
     "tslib": "1.11.1"
@@ -12,0 +12,0 @@ },

types.d.ts

@@ -1,2 +0,2 @@
-import { ITypeDefinitions, IResolvers, IResolverValidationOptions, IDirectiveResolvers, SchemaDirectiveVisitorClass, GraphQLParseOptions } from 'packages/utils/src';
+import { ITypeDefinitions, IResolvers, IResolverValidationOptions, IDirectiveResolvers, SchemaDirectiveVisitorClass, GraphQLParseOptions, SchemaTransform } from '@graphql-tools/utils';
 export interface ILogger {
@@ -13,4 +13,5 @@ log: (error: Error) => void;
     schemaDirectives?: Record<string, SchemaDirectiveVisitorClass>;
+    schemaTransforms?: Array<SchemaTransform>;
     parseOptions?: GraphQLParseOptions;
     inheritResolversFromInterfaces?: boolean;
 }

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increased by9.98%

Lines of code

1254

increased by9.9%

Dependency changes

• + Added@graphql-tools/utils@6.0.0-alpha-0bfc960.0(transitive)

• - Removed@graphql-tools/utils@6.0.0-alpha.1(transitive)

• Updated@graphql-tools/utils@6.0.0-alpha-0bfc960.0