While `URLSearchParams` has lived on the [global object in node][1] since `v10.0.0`, it can be hard to pull ambient type information from there.

The `URLSearchParams` class lives in the [`url` module][2], so you can also import it directly from there:

```ts
import { URLSearchParams } from "url"
```

then use it like this:

```ts
let queryString = new URLSearchParams({page: "1", pagesize: "100"}).toString();
```

Also, make sure you install types for node

```bash
npm install @types/node --save-dev
```

### Further Reading

* [How to use global URLSearchParams in node][3]

[1]: https://nodejs.org/api/globals.html#globals_urlsearchparams
[2]: https://nodejs.org/api/url.html#url_class_urlsearchparams
[3]: https://stackoverflow.com/q/47266550/1366033

I have a Node.js project that is built with TypeScript I'm trying to use [`URLSearchParams`][1], however I can see the following error:

```
Cannot find name 'URLSearchParams'.ts(2304)
```

```
const params = new URLSearchParams();
params.append("foo", 5);
```
---
```
typescript: ^3.9.7
node.js: v12.16.3
```

  [1]: https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams

How to use URLSearchParams in a Node.js and TypeScript project

Answer

Further Reading