@worker-tools/location-polyfill/README.md

# Location Polyfill

A [`Location`](https://developer.mozilla.org/docs/Web/API/Window/location) polyfill for Cloudflare Workers.

## Usage

Import the polyfill in your application code. 
Make sure it's included at the top, before any other dependencies that register `fetch` event listeners.

```ts
import '@worker-tools/location-polyfill';
```

This will populate the global `location` field with the `url` field from incoming requests. 
In CF Workers, this will typically be your script's `workers.dev` address.

*Note that the `location` field will be overwritten with each request!* This is because I haven't been able to find a way to access the worker's URL outside a `fetch` event context. Let me know if there's a better way!

To avoid sniffing the url from every request, you can provide the location via a global variable called `WORKER_LOCATION`.
In CF Workers, add the following to your `wrangler.toml` to define this variable.

```toml
[vars]
  WORKER_LOCATION = 'http://localhost:8787'
```

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<p align="center"><a href="https://workers.tools"><img src="https://workers.tools/assets/img/logo.svg" width="100" height="100" /></a>
<p align="center">This module is part of the Worker Tools collection<br/>⁕

[Worker Tools](https://workers.tools) are a collection of TypeScript libraries for writing web servers in [Worker Runtimes](https://workers.js.org) such as Cloudflare Workers, Deno Deploy and Service Workers in the browser. 

If you liked this module, you might also like:

- 🧭 [__Worker Router__][router] --- Complete routing solution that works across CF Workers, Deno and Service Workers
- 🔋 [__Worker Middleware__][middleware] --- A suite of standalone HTTP server-side middleware with TypeScript support
- 📄 [__Worker HTML__][html] --- HTML templating and streaming response library
- 📦 [__Storage Area__][kv-storage] --- Key-value store abstraction across [Cloudflare KV][cloudflare-kv-storage], [Deno][deno-kv-storage] and browsers.
- 🆗 [__Response Creators__][response-creators] --- Factory functions for responses with pre-filled status and status text
- 🎏 [__Stream Response__][stream-response] --- Use async generators to build streaming responses for SSE, etc...
- 🥏 [__JSON Fetch__][json-fetch] --- Drop-in replacements for Fetch API classes with first class support for JSON.
- 🦑 [__JSON Stream__][json-stream] --- Streaming JSON parser/stingifier with first class support for web streams.

Worker Tools also includes a number of polyfills that help bridge the gap between Worker Runtimes:
- ✏️ [__HTML Rewriter__][html-rewriter] --- Cloudflare's HTML Rewriter for use in Deno, browsers, etc...
- 📍 [__Location Polyfill__][location-polyfill] --- A `Location` polyfill for Cloudflare Workers.
- 🦕 [__Deno Fetch Event Adapter__][deno-fetch-event-adapter] --- Dispatches global `fetch` events using Deno’s native HTTP server.

[router]: https://workers.tools/router
[middleware]: https://workers.tools/middleware
[html]: https://workers.tools/html
[kv-storage]: https://workers.tools/kv-storage
[cloudflare-kv-storage]: https://workers.tools/cloudflare-kv-storage
[deno-kv-storage]: https://workers.tools/deno-kv-storage
[kv-storage-polyfill]: https://workers.tools/kv-storage-polyfill
[response-creators]: https://workers.tools/response-creators
[stream-response]: https://workers.tools/stream-response
[json-fetch]: https://workers.tools/json-fetch
[json-stream]: https://workers.tools/json-stream
[request-cookie-store]: https://workers.tools/request-cookie-store
[extendable-promise]: https://workers.tools/extendable-promise
[html-rewriter]: https://workers.tools/html-rewriter
[location-polyfill]: https://workers.tools/location-polyfill
[deno-fetch-event-adapter]: https://workers.tools/deno-fetch-event-adapter

Fore more visit [workers.tools](https://workers.tools).