diff --git a/README.md b/README.md
index 3d8146f7..c382f298 100644
--- a/README.md
+++ b/README.md
@@ -85,16 +85,16 @@ import { struct } from "superstruct";
 
 const schema = struct({
   name: "string",
-  age: "number"
+  age: "number",
 });
 
 const App = () => {
   const { register, handleSubmit } = useForm({
-    resolver: superstructResolver(schema)
+    resolver: superstructResolver(schema),
   });
 
   return (
-    <form onSubmit={handleSubmit(d => console.log(d))}>
+    <form onSubmit={handleSubmit((d) => console.log(d))}>
       <input name="name" ref={register} />
       <input name="age" type="number" ref={register} />
 
@@ -117,16 +117,16 @@ import { joiResolver } from "@hookform/resolvers";
 import Joi from "@hapi/joi";
 
 const schema = Joi.object({
-  username: Joi.string().required()
+  username: Joi.string().required(),
 });
 
 const App = () => {
   const { register, handleSubmit } = useForm({
-    resolver: joiResolver(schema)
+    resolver: joiResolver(schema),
   });
 
   return (
-    <form onSubmit={handleSubmit(d => console.log(d))}>
+    <form onSubmit={handleSubmit((d) => console.log(d))}>
       <input name="name" ref={register} />
       <input name="age" type="number" ref={register} />
 
diff --git a/package.json b/package.json
index f23ad6a1..3c6eebce 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hookform/resolvers",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "React Hook Form validation resolvers: Yup, Joi, Superstruct and etc.",
   "main": "dist/index.js",
   "module": "dist/index.esm.js",
diff --git a/src/joi.ts b/src/joi.ts
index 4e9eea89..22ec39db 100644
--- a/src/joi.ts
+++ b/src/joi.ts
@@ -1,23 +1,14 @@
-import { appendErrors, transformToNestObject } from 'react-hook-form';
+import { appendErrors, transformToNestObject, Resolver } from 'react-hook-form';
 import Joi from '@hapi/joi';
 import convertArrayToPathName from './utils/convertArrayToPathName';
 
-type JoiError = {
-  details: any;
-};
-
-type FieldValues = Record<string, any>;
-
-type FieldError = {
-  path: (string | number)[];
-  message: string;
-  type: string;
-};
-
-const parseErrorSchema = (error: JoiError, validateAllFieldCriteria: boolean) =>
+const parseErrorSchema = (
+  error: Joi.ValidationError,
+  validateAllFieldCriteria: boolean,
+) =>
   Array.isArray(error.details)
     ? error.details.reduce(
-        (previous: FieldValues, { path, message = '', type }: FieldError) => {
+        (previous: Record<string, any>, { path, message = '', type }) => {
           const currentPath = convertArrayToPathName(path);
 
           return {
@@ -51,19 +42,21 @@ const parseErrorSchema = (error: JoiError, validateAllFieldCriteria: boolean) =>
       )
     : [];
 
-export const joiResolver = (
-  validationSchema: Joi.Schema,
-  config: any = {
+export const joiResolver = <TFieldValues extends Record<string, any>>(
+  schema: Joi.Schema,
+  options: Joi.AsyncValidationOptions = {
     abortEarly: false,
   },
-) => async (data: any, _: any = {}, validateAllFieldCriteria = false) => {
+): Resolver<TFieldValues> => async (
+  values,
+  _,
+  validateAllFieldCriteria = false,
+) => {
   try {
-    const values = await validationSchema.validateAsync(data, {
-      ...config,
-    });
-
     return {
-      values,
+      values: await schema.validateAsync(values, {
+        ...options,
+      }),
       errors: {},
     };
   } catch (e) {
diff --git a/src/superstruct.ts b/src/superstruct.ts
index ec2aa37a..c0df688b 100644
--- a/src/superstruct.ts
+++ b/src/superstruct.ts
@@ -1,25 +1,14 @@
-import { appendErrors, transformToNestObject } from 'react-hook-form';
+import { appendErrors, transformToNestObject, Resolver } from 'react-hook-form';
+import Superstruct from 'superstruct';
 import convertArrayToPathName from './utils/convertArrayToPathName';
 
-type SuperStructError = {
-  failures: any;
-};
-
-type FieldValues = Record<string, any>;
-
-type FieldError = {
-  path: (string | number)[];
-  message: string;
-  type: string;
-};
-
 const parseErrorSchema = (
-  error: SuperStructError,
+  error: Superstruct.StructError,
   validateAllFieldCriteria: boolean,
 ) =>
   Array.isArray(error.failures)
     ? error.failures.reduce(
-        (previous: FieldValues, { path, message = '', type }: FieldError) => {
+        (previous: Record<string, any>, { path, message = '', type }) => {
           const currentPath = convertArrayToPathName(path);
 
           return {
@@ -31,7 +20,7 @@ const parseErrorSchema = (
                       currentPath,
                       validateAllFieldCriteria,
                       previous,
-                      type,
+                      type || '',
                       message,
                     ),
                   }
@@ -41,7 +30,7 @@ const parseErrorSchema = (
                       type,
                       ...(validateAllFieldCriteria
                         ? {
-                            types: { [type]: message || true },
+                            types: { [type || '']: message || true },
                           }
                         : {}),
                     },
@@ -53,14 +42,16 @@ const parseErrorSchema = (
       )
     : [];
 
-export const superstructResolver = (validationSchema: any) => async (
-  data: any,
-  _: any = {},
+export const superstructResolver = <TFieldValues extends Record<string, any>>(
+  schema: Superstruct.Struct,
+): Resolver<TFieldValues> => async (
+  values,
+  _,
   validateAllFieldCriteria = false,
 ) => {
   try {
     return {
-      values: validationSchema(data),
+      values: schema(values),
       errors: {},
     };
   } catch (e) {
diff --git a/src/yup.test.ts b/src/yup.test.ts
index 0672eadc..14b33805 100644
--- a/src/yup.test.ts
+++ b/src/yup.test.ts
@@ -96,15 +96,15 @@ describe('validateWithSchema', () => {
         validate: () => {
           throw errors;
         },
-      })({}),
+      } as any)({}),
     ).toMatchSnapshot();
   });
 
   it('should return empty object when validate pass', async () => {
     expect(
       await yupResolver({
-        validate: () => new Promise((resolve) => resolve()) as any,
-      })({}),
+        validate: () => new Promise((resolve) => resolve()),
+      } as any)({}),
     ).toEqual({
       errors: {},
       values: undefined,
diff --git a/src/yup.ts b/src/yup.ts
index 17fa3026..c11b020b 100644
--- a/src/yup.ts
+++ b/src/yup.ts
@@ -1,21 +1,13 @@
-import { appendErrors, transformToNestObject } from 'react-hook-form';
-
-type YupValidationError = {
-  inner: { path: string; message: string; type: string }[];
-  path: string;
-  message: string;
-  type: string;
-};
-
-type FieldValues = Record<string, any>;
+import { appendErrors, transformToNestObject, Resolver } from 'react-hook-form';
+import Yup from 'yup';
 
 const parseErrorSchema = (
-  error: YupValidationError,
+  error: Yup.ValidationError,
   validateAllFieldCriteria: boolean,
 ) =>
   Array.isArray(error.inner)
     ? error.inner.reduce(
-        (previous: FieldValues, { path, message, type }: FieldValues) => ({
+        (previous: Record<string, any>, { path, message, type }) => ({
           ...previous,
           ...(path
             ? previous[path] && validateAllFieldCriteria
@@ -47,17 +39,21 @@ const parseErrorSchema = (
         [error.path]: { message: error.message, type: error.type },
       };
 
-export const yupResolver = (
-  validationSchema: any,
-  config: any = {
+export const yupResolver = <TFieldValues extends Record<string, any>>(
+  schema: Yup.ObjectSchema,
+  options: Yup.ValidateOptions = {
     abortEarly: false,
   },
-) => async (data: any, _: any = {}, validateAllFieldCriteria = false) => {
+): Resolver<TFieldValues> => async (
+  values,
+  _,
+  validateAllFieldCriteria = false,
+) => {
   try {
     return {
-      values: await validationSchema.validate(data, {
-        ...config,
-      }),
+      values: (await schema.validate(values, {
+        ...options,
+      })) as any,
       errors: {},
     };
   } catch (e) {