chore: add docs for 3.42.0

Author: zkat

CHANGELOG.md

@@ -1,14 +1,12 @@
 # Changelog
 
-## [3.42.0](https://github.com/fastly/js-compute-runtime/compare/v3.41.2...v3.42.0) (2026-05-08)
+## 3.42.0 (2026-05-08)
 
-
-### Features
+### Added
 
 * Bail out of reusable sandbox if request fails ([#1453](https://github.com/fastly/js-compute-runtime/issues/1453)) ([b6f41b0](https://github.com/fastly/js-compute-runtime/commit/b6f41b0bcf429705f1a70530e39774f3fedd3c07))
 
-
-### Bug Fixes
+### Fixed
 
 * Correct GC guard type in KVStore::put to prevent wasm unreachable crashes and fix some CI issues ([#1475](https://github.com/fastly/js-compute-runtime/issues/1475)) ([15f850d](https://github.com/fastly/js-compute-runtime/commit/15f850d47c2a407d5261f3b46047bb533bcca1dd))
 * Protect against GC from `validate_bytes` ([#1447](https://github.com/fastly/js-compute-runtime/issues/1447)) ([be0867b](https://github.com/fastly/js-compute-runtime/commit/be0867ba1f7632dab107c3db15800db3a52a49ec))

documentation/app/package-lock.json

@@ -0,0 +1,20 @@
+---
+hide_title: false
+hide_table_of_contents: false
+pagination_next: null
+pagination_prev: null
+---
+
+# Acl.open()
+
+Opens the ACL with the given name, returning a new `Acl` instance with the given name on success.
+
+## Syntax
+
+```js
+Acl.open(name)
+```
+
+### Return value
+
+An `Acl` instance.

documentation/package-lock.json

@@ -0,0 +1,38 @@
+---
+hide_title: false
+hide_table_of_contents: false
+pagination_next: null
+pagination_prev: null
+---
+
+# Acl.prototype.lookup()
+
+The **`lookup(ipAddress)`** method returns the name associated with the `Acl` instance.
+
+## Syntax
+
+```js
+acl.lookup(ipAddress)
+```
+
+### Parameters
+
+- `ipAddress` _: string_
+  - IPv4 or IPv6 address to lookup
+
+### Return value
+
+An Object of the form `{ action: 'ALLOW' | 'BlOCK', prefix: string }`, where `prefix` is the IP
+address prefix that was matched in the ACL.
+
+## Example
+
+```js
+/// <reference types="@fastly/js-compute" />
+import { Acl } from 'fastly:acl';
+addEventListener('fetch', async (evt) => {
+  const myAcl = Acl.open('myacl');
+  const match = await myAcl.lookup(evt.client.address);
+  evt.respondWith(new Response(match?.action === 'BLOCK' ? 'blocked' : 'allowed'));
+});
+```