[Webkit-unassigned] [Bug 260324] New: Incorrect error message in accidental function call

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=260324

            Bug ID: 260324
           Summary: Incorrect error message in accidental function call
           Product: WebKit
           Version: Safari 16
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dev at sheetjs.com

Reproduction:

```js
console.log("hi")
(async() => {
        console.log("hi");
        console.log("hi");
        console.log("hi");
        console.log("hi");
        console.log("hi");
        console.log("hi");
})();
```

This is interpreted as `console.log("hi")(/*...*/)();` and throws an error since `console.log("hi")` returns `undefined`.

.

V8 correctly diagnoses the error.  Running in the Chrome DevTools shows the error:

```
Uncaught TypeError: console.log(...) is not a function
```

.

Safari 16 and Bun 0.7.3 both misdiagnose the error:

```
TypeError: console.log is not a function. (In 'console.log("hi")', 'console.log' is undefined)
```

To be clear, `console.log` is not undefined in context.

.

This appears to be related to the size of the function body.  For example, if one of the console calls is removed:

```js
console.log("hi")
(async() => {
        console.log("hi");
        console.log("hi");
        console.log("hi");
        console.log("hi");
        console.log("hi");
})();
```

Safari and Bun both show correct error messages:

```
TypeError: console.log("hi")
 is not a function. (In 'console.log("hi")
(async() => {
        console.log("hi");
        console.log("hi");
        console.log("hi");
        console.log("hi");
        console.log("hi");
})', 'console.log("hi")
' is undefined)
```

This message is correct: `console.log("hi")` is undefined.

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