Bug 272962 – Web Inspector: Doesn't show caches created with caches.open

• Status: NEW
• Component: Web Inspector

[Callionica]

Created attachment 471003 [details]
A web page to create a cache entry

1. Create a cache called `my-cache-is-invisible`
2. Populate it with a single entry (optionally load the entry to prove that the cache is working correctly)
3. Look for your cache in the Web Inspector

We would expect to see the cache on the `Storage` page of the inspector, but there's no sign of it there in Safari Version 17.4.1 (19618.1.15.11.14)

Use the attachment to repro or use the code below.

Code for the repro:

        const cache = await caches.open("my-cache-is-invisible");
        const blob = new Blob(["LOADED FROM CACHE: Can you find the cache 'my-cache-is-invisible' in the webinspector?"], { type: "text/plain" });
        const response = new Response(blob, { status: 200, });
        const url = new URL("https://callionica.com/cache");
        await cache.put(url, response);

Code to prove the cache actually exists and is working:
        const cache = await caches.open("my-cache-is-invisible");
        const url = new URL("https://callionica.com/cache");
        const response = await cache.match(url);
        if (response !== undefined) {
            const text = await response.text();
            document.querySelector(".output").innerHTML = text;
        }

[Radar WebKit Bug Importer]

<rdar://problem/126742403>