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  1. Qt
  2. QTBUG-101298

Extending the Error class errors when trying to overwrite the `name` property

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    • macOS
    • b6cf0672e6 (qt/qtdeclarative/dev) b6cf0672e6 (qt/tqtc-qtdeclarative/dev)

    Description

      Example:

      class MyError extends Error {
    constructor() {
        super();
        this.name = "MyError";
    }
}

// Throws a TypeError
const e = new MyError();

      If I wrap the `this.name` on a `try/catch` block this works (of course, `name` is not set).

      I think this is something specific on the Error implementation, because this does not throw:

      class A {
    constructor() {
        this.name = "A";
    }
}

class B extends A {
    constructor() {
        super();
        this.name = "B";
    }
}

// Does not throw
const e = new B();

       

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-84341 ECMAScript / Javascript Engine builtin objects are immutable (frozen)

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-22787 Cannot set properties on QJSEngine's global object in initializeEngine()

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed
          relates to

          Suggestion - Public suggestions QTBUG-22356 Investigate support for 3rd party JS libraries

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              ulherman Ulf Hermann
              brizental Beatriz Rizental
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              Dates

                Created:
                Updated:
                Resolved:

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