[Webkit-unassigned] [Bug 161662] New: Support jsc shell builtin `read`

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=161662

            Bug ID: 161662
           Summary: Support jsc shell builtin `read`
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jfbastien at apple.com

The jsc shell currently supports a `readFile` method which returns a string. SpiderMonkey's js shell and V8's d8 shell both support similar file-to-string functions, as well as a binary-file-to-Uint8Array function. jsc should support a similar binary file method to simplify testing, including testing of WebAssembly blobs.

Emscripten's shell.js (which is also used for some WebAssembly things) has a polyfill [1] for a builtin called `read`. jsc should therefore have a builtin with the same name if we want things to "Just Work".

  [1]: https://github.com/kripken/emscripten/blob/5f0918409a1407dd168f57cfa34b109cd1770a8a/src/shell.js#L138

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