# TS7016: Could not find a declaration file for module 'x'. 'x.js' implicitly has an 'any' type.

**Code:** `TS7016` · **Category:** Node.js · **Seen on:** Node.js

The JavaScript package has no TypeScript types bundled and no @types package installed.

## Meaning

With noImplicitAny/strict, untyped imports error. Install @types/package if it exists, or write a minimal declaration.

## Common causes

- Package without types
- @types package not installed
- Types published under a different name

## Quick fix

1. npm i -D @types/package
2. Add declare module 'package'; in a .d.ts file
3. Check the package for a types/typings field

## Detailed fix by platform

### Node.js

1. `npm i -D @types/express`

## How to diagnose

1. **Types** — Does @types/name exist?
2. **Recent change** — Did it start after a deploy, upgrade, or configuration change? Compare with the last working version.

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Source: [WhatIsMyError](https://whatismyerror.com/errors/nodejs/ts7016-could-not-find-declaration-file)