> For the complete documentation index, see [llms.txt](https://docs.snyk.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snyk.io/supported-languages/supported-languages-list/typescript.md).

# TypeScript

Snyk support for TypeScript with Snyk Open Source and Snyk Code, including SCM import, CLI and IDE testing, and JavaScript frameworks

## Applicability and integration

{% hint style="info" %}
Snyk supports TypeScript for Snyk Open Source and Snyk Code.
{% endhint %}

Available integrations:

* SCM import
* CLI and IDE: test or monitor your app

## Technical specifications

You can use TypeScript versions up to 4.2.

### Supported frameworks and libraries

Snyk supports all JavaScript frameworks and libraries. For more information, visit [JavaScript frameworks and libraries](/supported-languages/supported-languages-list/javascript.md#supported-frameworks-and-libraries).

### Supported package managers and registries

For TypeScript, Snyk supports npm, pnpm, and Yarn as package managers, with the following versions:

* npm: `Lockfile 1`, `Lockfile 2`, `Lockfile 3`
* pnpm: `pnpm 7`, `pnpm 8`, `pnpm 9`, `pnpm 10`
* Yarn: `Yarn 1`, `Yarn 2`, `Yarn 3`, `Yarn 4`

As a package registry, Snyk supports [npmjs.org](https://www.npmjs.org/).

## TypeScript for Snyk Code

For an overview of the supported security rules, visit [JavaScript and TypeScript rules](https://docs.snyk.io/scan-fix-and-prevent/scan-with-snyk/snyk-code/snyk-code-security-rules/javascript-and-typescript-rules).

For TypeScript with Snyk Code, Snyk supports the following file formats: `.ejs`, `.es`, `.es6`, `.htm`, `.html`, `.js`, `.jsx`, `.ts`, `.cts`, `.mts`, `.tsx`, `.vue`, `.mjs`, `.cjs`, `.erb`

To resolve imports that use path aliases when tracing data flow across modules, Snyk Code reads `tsconfig.json` and `jsconfig.json` in your Project.

Available features:

* Reports
* Interfile analysis

## TypeScript for Snyk Open Source

For TypeScript with Snyk Open Source, Snyk supports the following file formats:

* npm: `package.json` and `package-lock.json`
* pnpm: `pnpm-lock.yaml`
* Yarn: `yarn.lock`

Available features:

* License scanning
* Reports
* Test your app's SBOM and packages using `pkg:npm` PURLs through the [SBOM test](https://docs.snyk.io/developer-tools/snyk-cli/snyk-cli/commands/sbom-test) CLI command

{% hint style="info" %}
The **Snyk Fix PR** feature is not available for TypeScript. This means that Snyk does not notify you if the PR checks fail when the following conditions are met:

* The **PR checks** feature is enabled and configured to **Only fail when the issues found have a fix available**.
* **"Fixed in" available** is set to **Yes**.
  {% endhint %}


---

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