diff --git a/types/next-auth/_utils.d.ts b/types/next-auth/_utils.d.ts
new file mode 100644
index 0000000000..b008cf50b1
--- /dev/null
+++ b/types/next-auth/_utils.d.ts
@@ -0,0 +1,25 @@
+import { IncomingMessage, ServerResponse } from 'http';
+
+interface GenericObject {
+    [key: string]: any;
+}
+
+interface NextApiRequest extends IncomingMessage, GenericObject {
+    query: {
+        [key: string]: string | string[];
+    };
+    cookies: {
+        [key: string]: string;
+    };
+    body: any;
+}
+
+interface NextApiResponse<T = any> extends ServerResponse, GenericObject {
+    send: Send<T>;
+    json: Send<T>;
+    status: (statusCode: number) => NextApiResponse<T>;
+}
+
+type Send<T> = (body: T) => void;
+
+export { GenericObject, NextApiRequest, NextApiResponse };
diff --git a/types/next-auth/adapters.d.ts b/types/next-auth/adapters.d.ts
index 2cfda0805a..b73f5d12dc 100644
--- a/types/next-auth/adapters.d.ts
+++ b/types/next-auth/adapters.d.ts
@@ -1,24 +1,183 @@
-import { ConnectionOptions } from 'typeorm';
+import { ConnectionOptions, EntitySchema } from 'typeorm';
+import { AppOptions } from '.';
+import { SessionProvider } from './client';
 
-/**
- * TODO: type adapters correctly
- * @see https://next-auth.js.org/schemas/adapters
- */
-interface GenericObject {
-    [key: string]: any;
+// NOTE: There are a lot of `any`. That's because there could be any schema for each entity
+interface Adapter {
+    getAdapter(
+        appOptions: AppOptions,
+    ): Promise<{
+        createUser(profile: any): Promise<any>;
+        getUser(id: string): Promise<any>;
+        getUserByEmail(email: string): Promise<any>;
+        getUserByProviderAccountId(providerId: string, providerAccountId: string): Promise<any>;
+        updateUser(profile: any): Promise<any>;
+        linkAccount(
+            userId: string,
+            providerId: string,
+            providerType: string,
+            providerAccountId: string,
+            refreshToken: string,
+            accessToken: string,
+            accessTokenExpires: number,
+        ): Promise<void>;
+        createSession(user: any): Promise<any>;
+        getSession(sessionToken: string): Promise<any>;
+        updateSession(session: any): Promise<void>;
+        deleteSession(sessionToken: string): Promise<void>;
+        createVerificationRequest?(
+            email: string,
+            url: string,
+            token: string,
+            secret: string,
+            provider: SessionProvider,
+            options: AppOptions,
+        ): Promise<void>;
+        getVerificationRequest?(
+            email: string,
+            verificationToken: string,
+            secret: string,
+            provider: SessionProvider,
+        ): Promise<any>;
+        deleteVerificationRequest?(
+            email: string,
+            verificationToken: string,
+            secret: string,
+            provider: SessionProvider,
+        ): Promise<any>;
+    }>;
 }
 
-type Adapter = (config: ConnectionOptions) => any;
+type Schema<T = any> = EntitySchema<T>['options'];
 
 interface Adapters {
-    Default: Adapter;
-    TypeORM: {
-        Adapter: Adapter;
-        Models: GenericObject;
+    Default: TypeORMAdapter['Adapter'];
+    TypeORM: TypeORMAdapter;
+    Prisma: PrismaAdapter;
+}
+
+/**
+ * TODO: fix auto-type schema
+ */
+
+interface TypeORMAdapter<
+    A extends TypeORMAccountModel = any,
+    U extends TypeORMUserModel = any,
+    S extends TypeORMSessionModel = any,
+    VR extends TypeORMVerificationRequestModel = any
+> {
+    Adapter(
+        typeOrmConfig: ConnectionOptions,
+        options?: {
+            models?: {
+                Account?: {
+                    model: A;
+                    schema: Schema<A>;
+                };
+                User?: {
+                    model: U;
+                    schema: Schema<U>;
+                };
+                Session?: {
+                    model: S;
+                    schema: Schema<S>;
+                };
+                VerificationRequest?: {
+                    model: VR;
+                    schema: Schema<VR>;
+                };
+            };
+        },
+    ): Adapter;
+    Models: {
+        Account: {
+            model: TypeORMAccountModel;
+            schema: Schema<TypeORMAccountModel>;
+        };
+        User: {
+            model: TypeORMUserModel;
+            schema: Schema<TypeORMUserModel>;
+        };
+        Session: {
+            model: TypeORMSessionModel;
+            schema: Schema<TypeORMSessionModel>;
+        };
+        VerificationRequest: {
+            model: TypeORMVerificationRequestModel;
+            schema: Schema<TypeORMVerificationRequestModel>;
+        };
     };
 }
 
+interface PrismaAdapter {
+    Adapter(config: {
+        prisma: any;
+        modelMapping?: {
+            User: string;
+            Account: string;
+            Session: string;
+            VerificationRequest: string;
+        };
+    }): Adapter;
+}
+
 declare const Adapters: Adapters;
 
+declare class TypeORMAccountModel {
+    compoundId: string;
+    userId: number;
+    providerType: string;
+    providerId: string;
+    providerAccountId: string;
+    refreshToken?: string;
+    accessToken?: string;
+    accessTokenExpires?: Date;
+
+    constructor(
+        userId: number,
+        providerId: string,
+        providerType: string,
+        providerAccountId: string,
+        refreshToken?: string,
+        accessToken?: string,
+        accessTokenExpires?: Date,
+    );
+}
+
+declare class TypeORMUserModel {
+    name?: string;
+    email?: string;
+    image?: string;
+    emailVerified?: Date;
+
+    constructor(name?: string, email?: string, image?: string, emailVerified?: Date);
+}
+
+declare class TypeORMSessionModel {
+    userId: number;
+    expires: Date;
+    sessionToken: string;
+    accessToken: string;
+
+    constructor(userId: number, expires: Date, sessionToken?: string, accessToken?: string);
+}
+
+declare class TypeORMVerificationRequestModel {
+    identifier?: string;
+    token?: string;
+    expires?: Date;
+
+    constructor(identifier?: string, token?: string, expires?: Date);
+}
+
 export default Adapters;
-export { Adapter };
+export {
+    Adapter,
+    Adapters,
+    TypeORMAdapter,
+    TypeORMAccountModel,
+    TypeORMUserModel,
+    TypeORMSessionModel,
+    TypeORMVerificationRequestModel,
+    PrismaAdapter,
+};
diff --git a/types/next-auth/client.d.ts b/types/next-auth/client.d.ts
index a02b16f179..2d71939b5b 100644
--- a/types/next-auth/client.d.ts
+++ b/types/next-auth/client.d.ts
@@ -1,6 +1,8 @@
 import { FC } from 'react';
+import { IncomingMessage } from 'http';
+import { GenericObject } from './_utils';
 
-export interface Session {
+interface Session {
     user: {
         name: string;
         email: string;
@@ -14,7 +16,7 @@ interface GetProvidersResponse {
     [provider: string]: SessionProvider;
 }
 
-interface SessionProvider {
+interface SessionProvider extends GenericObject {
     id: string;
     name: string;
     type: string;
@@ -22,37 +24,35 @@ interface SessionProvider {
     callbackUrl: string;
 }
 
-interface GenericObject {
-    [key: string]: any;
-}
-
 interface ContextProviderProps {
     session: Session;
-    options?: ContextProviderOptions;
-}
-
-interface ContextProviderOptions {
-    site?: string;
-    basePath?: string;
-    clientMaxAge?: number;
-    keepAlive?: number;
+    options?: SetOptionsParams;
 }
 
 interface SetOptionsParams {
     baseUrl?: string;
     basePath?: string;
-    clientMaxAge?: string;
-    keepAlive?: boolean;
+    clientMaxAge?: number;
+    keepAlive?: number;
 }
 
 type ContextProvider = FC<ContextProviderProps>;
 
+interface NextContext {
+    req?: IncomingMessage;
+    ctx?: { req: IncomingMessage };
+}
+
 declare function useSession(): [Session, boolean];
-declare function providers(context?: NextPageContext): Promise<GetProvidersResponse | null>;
+declare function providers(): Promise<GetProvidersResponse | null>;
 declare const getProviders: typeof providers;
-declare function session(context?: NextPageContext): Promise<Session | null>;
+declare function session(
+    context?: NextContext & {
+        triggerEvent?: boolean;
+    },
+): Promise<Session | null>;
 declare const getSession: typeof session;
-declare function csrfToken(context?: NextPageContext): Promise<string | null>;
+declare function csrfToken(context?: NextContext): Promise<string | null>;
 declare const getCsrfToken: typeof csrfToken;
 declare function signin(
     provider?: string,
@@ -82,30 +82,6 @@ export {
     options,
     setOptions,
     Provider,
+    Session,
+    SessionProvider,
 };
-
-/**
- * TODO: `dtslint` throws when parsing Next types... the following types are copied directly from `next/types` ...
- * @see https://github.com/microsoft/dtslint/issues/297
- */
-
-interface NextApiRequest {
-    query: {
-        [key: string]: string | string[];
-    };
-    cookies: {
-        [key: string]: string;
-    };
-    body: any;
-    env: Env;
-}
-
-interface NextPageContext {
-    req?: NextApiRequest;
-    ctx?: NextPageContext;
-    triggerEvent?: boolean;
-}
-
-interface Env {
-    [key: string]: string;
-}
diff --git a/types/next-auth/index.d.ts b/types/next-auth/index.d.ts
index 005babe8be..a162d83d1f 100644
--- a/types/next-auth/index.d.ts
+++ b/types/next-auth/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/iaincollins/next-auth#readme
 // Definitions by: Lluis <https://github.com/lluia>
 //                 Iain <https://github.com/iaincollins>
+//                 Juan <https://github.com/JuanM04>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 3.1
 
@@ -10,10 +11,13 @@
 import { ConnectionOptions } from 'typeorm';
 import { PossibleProviders } from './providers';
 import { Adapter } from './adapters';
+import { GenericObject, NextApiRequest, NextApiResponse } from './_utils';
+import { SessionProvider } from './client';
+import { JWTEncodeParams, JWTDecodeParams } from './jwt';
 
-export interface InitOptions {
+interface InitOptions {
     providers: Array<ReturnType<PossibleProviders>>;
-    database?: ConnectionOptions | string;
+    database?: string | ConnectionOptions;
     secret?: string;
     session?: Session;
     jwt?: JWTOptions;
@@ -26,7 +30,29 @@ export interface InitOptions {
     cookies?: Cookies;
 }
 
-export interface PageOptions {
+interface AppOptions {
+    debug: boolean;
+    pages: PageOptions;
+    adapter: Adapter;
+    baseUrl: string;
+    basePath: string;
+    action: 'providers' | 'session' | 'csrf' | 'signin' | 'signout' | 'callback' | 'verify-request' | 'error';
+    provider?: string;
+    cookies: Cookies;
+    secret: string;
+    csrfToken: string;
+    providers: {
+        [provider: string]: SessionProvider;
+    };
+    session: Session;
+    jwt: JWTOptions;
+    events: Events;
+    callbacks: Callbacks;
+    callbackUrl: string;
+    // redirect?(redirectUrl: string): any;
+}
+
+interface PageOptions {
     signIn?: string;
     signOut?: string;
     error?: string;
@@ -43,22 +69,22 @@ interface Cookie {
     options: CookieOptions;
 }
 
-export interface CookieOptions {
+interface CookieOptions {
     httpOnly?: boolean;
-    // TODO: type available `sameSite` identifiers
-    sameSite: string;
-    path: string;
-    secure: boolean;
+    sameSite?: true | 'strict' | 'lax' | 'none';
+    path?: string;
+    secure?: boolean;
+    maxAge?: number;
 }
 
 interface Events {
-    signIn?(message: string): Promise<void>;
-    signOut?(message: string): Promise<void>;
-    createUser?(message: string): Promise<void>;
-    updateUser?(message: string): Promise<void>;
-    linkAccount?(message: string): Promise<void>;
-    session?(message: string): Promise<void>;
-    error?(message: string): Promise<void>;
+    signIn?(message: any): Promise<void>;
+    signOut?(message: any): Promise<void>;
+    createUser?(message: any): Promise<void>;
+    updateUser?(message: any): Promise<void>;
+    linkAccount?(message: any): Promise<void>;
+    session?(message: any): Promise<void>;
+    error?(message: any): Promise<void>;
 }
 
 interface Session {
@@ -68,54 +94,14 @@ interface Session {
 }
 
 interface JWTOptions {
-    secret: string;
+    secret?: string;
     maxAge?: number;
     encode?(options: JWTEncodeParams): Promise<string>;
     decode?(options: JWTDecodeParams): Promise<string>;
 }
 
-interface JWTSignInOptions {
-    expiresIn: string;
-}
-
-interface JWTVerificationOptions {
-    maxTokenAge: string;
-    algorithms: string[];
-}
-
-interface JWTDecryptionOptions {
-    algorithms: string[];
-}
-
-interface JWTDecodeParams {
-    secret: string;
-    token: GenericObject;
-    maxAge?: number;
-    signingKey?: string;
-    verificationKey?: string;
-    verificationOptions?: JWTVerificationOptions;
-    decryptionKey?: string;
-    decryptionOptions?: JWTDecryptionOptions;
-    encryption?: boolean;
-}
-
-interface JWTEncodeParams {
-    secret: string;
-    token: GenericObject;
-    signingKey?: string;
-    encryptionKey?: string;
-    signingOptions?: JWTSignInOptions;
-    encryptionOptions?: GenericObject;
-    encryption?: boolean;
-    maxAge?: number;
-}
-
-interface GenericObject {
-    [key: string]: any;
-}
-
 // TODO: Improve callback typings
-export interface Callbacks {
+interface Callbacks {
     signIn?(user: GenericObject, account: GenericObject, profile: GenericObject): Promise<boolean>;
     redirect?(url: string, baseUrl: string): Promise<string>;
     session?(session: Session, user: GenericObject): Promise<GenericObject>;
@@ -130,38 +116,4 @@ export interface Callbacks {
 
 declare function NextAuth(req: NextApiRequest, res: NextApiResponse, options?: InitOptions): Promise<void>;
 export default NextAuth;
-
-/**
- * TODO: `dtslint` throws when parsing Next types... the following types are copied directly from `next/types` ...
- * @see https://github.com/microsoft/dtslint/issues/297
- */
-
-interface NextApiRequest {
-    query: {
-        [key: string]: string | string[];
-    };
-    cookies: {
-        [key: string]: string;
-    };
-    body: any;
-    env: Env;
-}
-
-interface NextApiResponse<T = any> {
-    send: Send<T>;
-    json: Send<T>;
-    status: (statusCode: number) => NextApiResponse<T>;
-    setPreviewData: (
-        data: object | string,
-        options?: {
-            maxAge?: number;
-        },
-    ) => NextApiResponse<T>;
-    clearPreviewData: () => NextApiResponse<T>;
-}
-
-interface Env {
-    [key: string]: string;
-}
-
-type Send<T> = (body: T) => void;
+export { InitOptions, AppOptions, PageOptions, Cookies, Events, Session, JWTOptions, Callbacks };
diff --git a/types/next-auth/jwt.d.ts b/types/next-auth/jwt.d.ts
index 17b7a17efc..9c205adb40 100644
--- a/types/next-auth/jwt.d.ts
+++ b/types/next-auth/jwt.d.ts
@@ -1,24 +1,18 @@
 import jose from 'jose';
+import { NextApiRequest } from './_utils';
 
-/**
- * TODO: `dtslint` throws when parsing Next types... the following types are copied directly from `next/types` ...
- * @see https://github.com/microsoft/dtslint/issues/297
- */
-
-interface NextApiRequest {
-    query: {
-        [key: string]: string | string[];
-    };
-    cookies: {
-        [key: string]: string;
-    };
-    body: any;
-    env: {
-        [key: string]: string;
-    };
+export interface JWTEncodeParams {
+    token?: object;
+    maxAge?: number;
+    secret: string | Buffer;
+    signingKey?: string;
+    signingOptions?: jose.JWT.SignOptions;
+    encryptionKey?: string;
+    encryptionOptions?: object;
+    encryption?: boolean;
 }
 
-interface DecodeArgs {
+export interface JWTDecodeParams {
     maxAge?: number;
     secret: string | Buffer;
     signingKey?: string;
@@ -30,21 +24,8 @@ interface DecodeArgs {
     encryption?: boolean;
 }
 
-declare function encode(args?: {
-    token?: object;
-    maxAge?: number;
-    secret: string | Buffer;
-    signingKey?: string;
-    signingOptions?: jose.JWT.SignOptions;
-    encryptionKey?: string;
-    encryptionOptions?: object;
-    encryption?: boolean;
-}): Promise<string>;
-declare function decode(
-    args?: DecodeArgs & {
-        token: string;
-    },
-): Promise<object>;
+declare function encode(args?: JWTEncodeParams): Promise<string>;
+declare function decode(args?: JWTDecodeParams & { token: string }): Promise<object>;
 
 declare function getToken(
     args?: {
@@ -52,7 +33,7 @@ declare function getToken(
         secureCookie?: boolean;
         cookieName?: string;
         raw?: string;
-    } & DecodeArgs,
+    } & JWTDecodeParams,
 ): Promise<object>;
 declare function getToken(args?: {
     req: NextApiRequest;
diff --git a/types/next-auth/next-auth-tests.ts b/types/next-auth/next-auth-tests.ts
index e941d80d24..0e99965661 100644
--- a/types/next-auth/next-auth-tests.ts
+++ b/types/next-auth/next-auth-tests.ts
@@ -5,48 +5,30 @@
  * in the sense of typing and call signature consistency. They
  * are not intended as functional tests.
  */
-import NextAuth from 'next-auth';
 import Providers from 'next-auth/providers';
 import Adapters from 'next-auth/adapters';
 import * as client from 'next-auth/client';
 import * as JWT from 'next-auth/jwt';
+import NextAuth, * as NextAuthTypes from 'next-auth';
+import { GenericObject, NextApiRequest, NextApiResponse } from 'next-auth/_utils';
+import { IncomingMessage, ServerResponse } from 'http';
+import { Socket } from 'net';
 
 // --------------------------------------------------------------------------
 // Server
 // --------------------------------------------------------------------------
 
-interface GenericObject {
-    [key: string]: any;
-}
+const req: NextApiRequest = Object.assign(new IncomingMessage(new Socket()), {
+    query: {},
+    cookies: {},
+    body: {},
+});
 
-interface Session {
-    jwt?: boolean;
-    maxAge?: number;
-    updateAge?: number;
-}
-
-const req = {
-    query: {
-        foo: 'bar',
-    },
-    cookies: {
-        bar: 'baz',
-    },
-    body: {
-        bam: 'bom',
-    },
-    env: {
-        SOMETHING: 'SOMETHING',
-    },
-};
-
-const res = {
+const res: NextApiResponse = Object.assign(new ServerResponse(req), {
     send: () => undefined,
     json: () => undefined,
     status: (code: number) => res,
-    setPreviewData: (data: object | string) => res,
-    clearPreviewData: () => res,
-};
+});
 
 const pageOptions = {
     signin: 'path/to/signin',
@@ -94,7 +76,7 @@ const allConfig = {
     callbacks: {
         signIgn: (user: GenericObject, account: GenericObject, profile: GenericObject) => Promise.resolve(true),
         redirect: (url: string, baseUrl: string) => Promise.resolve('path/to/foo'),
-        session: (session: Session, user: GenericObject) => Promise.resolve<any>(user),
+        session: (session: NextAuthTypes.Session, user: GenericObject) => Promise.resolve<any>(user),
         jwt: (
             token: GenericObject,
             user: GenericObject,
@@ -123,17 +105,29 @@ const allConfig = {
             return undefined;
         },
     },
-    adapter: () => {
-        async function getAdapter() {
+    adapter: {
+        getAdapter: (appOptions: NextAuthTypes.AppOptions) => {
             return Promise.resolve({
-                getSession: async function getSession() {
-                    return null;
-                },
+                createUser: (profile: any) => Promise.resolve({}),
+                getUser: (id: string) => Promise.resolve({}),
+                getUserByEmail: (email: string) => Promise.resolve({}),
+                getUserByProviderAccountId: (providerId: string, providerAccountId: string) => Promise.resolve({}),
+                updateUser: (profile: any) => Promise.resolve({}),
+                linkAccount: (
+                    userId: string,
+                    providerId: string,
+                    providerType: string,
+                    providerAccountId: string,
+                    refreshToken: string,
+                    accessToken: string,
+                    accessTokenExpires: number,
+                ) => Promise.resolve(),
+                createSession: (user: any) => Promise.resolve({}),
+                getSession: (sessionToken: string) => Promise.resolve({}),
+                updateSession: (session: any) => Promise.resolve(),
+                deleteSession: (sessionToken: string) => Promise.resolve(),
             });
-        }
-        return {
-            getAdapter,
-        };
+        },
     },
     useSecureCookies: true,
     cookies: {
@@ -141,7 +135,7 @@ const allConfig = {
             name: `__Secure-next-auth.session-token`,
             options: {
                 httpOnly: true,
-                sameSite: 'foo',
+                sameSite: true as true,
                 path: '/',
                 secure: true,
             },
@@ -177,11 +171,6 @@ const baseContext = {
     triggerEvent: false,
 };
 
-const pageContext = {
-    ...baseContext,
-    ctx: { ...baseContext },
-};
-
 const githubProvider = {
     id: '123',
     name: 'github',
@@ -204,22 +193,22 @@ const session = {
 client.useSession();
 
 // $ExpectType Promise<Session | null>
-client.getSession(pageContext);
+client.getSession({ req });
 
 // $ExpectType Promise<Session | null>
-client.session(pageContext);
+client.session({ req });
 
 // $ExpectType Promise<GetProvidersResponse | null>
-client.getProviders(pageContext);
+client.getProviders();
 
 // $ExpectType Promise<GetProvidersResponse | null>
-client.providers(pageContext);
+client.providers();
 
 // $ExpectType Promise<string | null>
-client.getCsrfToken(pageContext);
+client.getCsrfToken({ req });
 
 // $ExpectType Promise<string | null>
-client.csrfToken(pageContext);
+client.csrfToken({ req });
 
 // $ExpectType Promise<void>
 client.signin('github', { data: 'foo' });
@@ -234,7 +223,7 @@ client.signout({ callbackUrl: 'https://foo.com/callback' });
 client.Provider({
     session,
     options: {
-        site: 'https://foo.com',
+        baseUrl: 'https://foo.com',
         basePath: '/',
         clientMaxAge: 1234,
     },