---
title: "Source Maps"
description: "Upload your source maps to Sentry to enable readable stack traces in your errors."
url: https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/
---

# Source Maps | Sentry for Cloudflare

To enable readable stack traces in your Sentry errors, you need to upload your source maps to Sentry.

The easiest way to configure uploading source maps is by using the [Sentry Wizard](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps.md#uploading-source-maps).

```bash
npx @sentry/wizard@latest -i sourcemaps
```

**Note:** Source maps are only generated and uploaded during **production builds** (`wrangler deploy`). Development builds (`wrangler dev`) do not generate source maps for upload.

See how uploading source maps lets you see the exact line of code that caused an error:

If you are using plain Cloudflare Workers, set `upload_source_maps = true` in your `wrangler.jsonc`/`wrangler.toml` config file to enable source map generation.

`wrangler.jsonc`

```jsonc
{
  "upload_source_maps": true,
}
```

For more detailed configuration options, see the [Cloudflare Workers guide](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/wrangler.md).

## [Uploading Source Maps](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps.md#uploading-source-maps)

The easiest way to configure uploading source maps is by using the Sentry Wizard:

```bash
npx @sentry/wizard@latest -i sourcemaps
```

The wizard will guide you through the following steps:

* Logging into Sentry and selecting a project
* Installing the necessary Sentry packages
* Configuring your build tool to generate and upload source maps
* Configuring your CI to upload source maps

If you want to configure source maps to upload manually, follow the guide for your bundler or build tool below.

## [Sentry Bundler Support](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps.md#sentry-bundler-support)

* [webpack](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/webpack.md)
* [Rollup](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/rollup.md)
* [Vite](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/vite.md)
* [esbuild](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/esbuild.md)

### [Cloudflare-Specific Tools](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps.md#cloudflare-specific-tools)

* [Wrangler](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/wrangler.md)

### [Guides for Source Maps](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps.md#guides-for-source-maps)

* [TypeScript (tsc)](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/typescript.md)

  If you're using a bundler like Webpack, Vite, Rollup, or Esbuild, use the corresponding Sentry plugin instead. For details, see the "Sentry Bundler Support" section.

* [UglifyJS](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/uglifyjs.md)

* [SystemJS](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/systemjs.md)

* [GitHub Actions](https://docs.sentry.io/product/releases/setup/release-automation/github-actions.md)

## [Other Tools](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps.md#other-tools)

If you're not using one of these tools, we assume you already know how to generate source maps with your toolchain and we recommend you upload them using [Sentry CLI](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading/cli.md).

## [Additional Resources](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps.md#additional-resources)

* [Using sentry-cli to Upload Source Maps](https://docs.sentry.io/cli/releases.md#sentry-cli-sourcemaps)
* [4 Reasons Why Your Source Maps Are Broken](https://blog.sentry.io/2018/10/18/4-reasons-why-your-source-maps-are-broken)

## Pages in this section

- [Uploading Source Maps](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/uploading.md)
- [Troubleshooting Source Maps](https://docs.sentry.io/platforms/javascript/guides/cloudflare/sourcemaps/troubleshooting_js.md)