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## Import maps
> This is an unstable feature. Learn more about
> [unstable features](../runtime/stability.md).
Deno supports [import maps](https://github.com/WICG/import-maps).
You can use import maps with the `--importmap=<FILE>` CLI flag.
Current limitations:
- single import map
- no fallback URLs
- Deno does not support `std:` namespace
- supports only `file:`, `http:` and `https:` schemes
Example:
```js
// import_map.json
{
"imports": {
"http/": "https://deno.land/std/http/"
}
}
```
```ts
// hello_server.ts
import { serve } from "http/server.ts";
const body = new TextEncoder().encode("Hello World\n");
for await (const req of serve(":8000")) {
req.respond({ body });
}
```
```shell
$ deno run --allow-net --importmap=import_map.json --unstable hello_server.ts
```
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