[Webkit-unassigned] [Bug 188243] New: fetch().text() should share memory on the same URL

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=188243

            Bug ID: 188243
           Summary: fetch().text() should share memory on the same URL
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Page Loading
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sbarati at apple.com
                CC: achristensen at apple.com, beidson at apple.com,
                    cdumez at apple.com, rniwa at webkit.org, sbarati at apple.com,
                    webkit-bug-importer at group.apple.com, youennf at gmail.com

For example, we end up with N*file size memory use here:

```
let files = [];
for (let i = 0; i < 100; ++i)
    files.push("foo.js");

async function load(url) {
    let fetchResponse = await fetch(new Request(url));
    let text = await fetchResponse.text();
    return text;
}

async function loadEverything() {
    let text = [];
    for (let url of files)
        text.push(await load(url));
    return text;
}
```

This is especially bad when "foo.js" is a large file.

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