React Native/ Typescript Error: undefined Unable to resolve module

I am getting error in react native typescript:-

[Error: undefined Unable to resolve module ./types from /home/ubuntu/Desktop/trash/solana_web3/test/src/start.ts: 

None of these files exist:
  * src/types(.native|.android.js|.native.js|.js|.android.json|.native.json|.json|.android.ts|.native.ts|.ts|.android.tsx|.native.tsx|.tsx|.android.cjs|.native.cjs|.cjs|.android.svg|.native.svg|.svg)
  * src/types/index(.native|.android.js|.native.js|.js|.android.json|.native.json|.json|.android.ts|.native.ts|.ts|.android.tsx|.native.tsx|.tsx|.android.cjs|.native.cjs|.cjs|.android.svg|.native.svg|.svg)

In start.ts I am importing types.d.ts like this :-

import { bool, publicKey, u64 } from './types';

// ... later
export const AccountLayout = struct<RawAccount>([
    publicKey('mint'),
    publicKey('owner'),
    u64('amount'),
    publicKey('delegate'),
    u64('isNative'),
    u64('delegatedAmount'),
    publicKey('closeAuthority'),
]);

File types.d.ts is :-

import { Layout } from '@solana/buffer-layout';
export declare const bool: (property?: string | undefined) => Layout<boolean>;
export declare const publicKey: (property?: string | undefined) => Layout<PublicKey>;
export declare const bigInt: (length: number) => (property?: string | undefined) => Layout<bigint>;
export declare const u64: (property?: string | undefined) => Layout<bigint>;

Please help why the error is coming.