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generic constraint not working #3720

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generic constraint not working#3720
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@fernandezpablo85
Pablo Fernandez (fernandezpablo85)
opened on Jul 2, 2015

This compiles cleanly:

function foo <T extends { someNumber: number }> (thingWithId: T): T {
    return thingWithId;
}

[1,2].map(foo);

and obviously, numbers don't have a someNumber numeric property.

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  1. Ryan Cavanaugh (RyanCavanaugh)
    added
    DuplicateAn existing issue was already created
    on Jul 2, 2015

  2. RyanCavanaugh commented on Jul 2, 2015

    @RyanCavanaugh
    Ryan Cavanaugh (RyanCavanaugh)
    on Jul 2, 2015
    Member

    See #3410 as mentioned in the Stack Overflow answer

  3. Ryan Cavanaugh (RyanCavanaugh)
    closed this as completedon Jul 2, 2015

  4. mhegazy commented on May 18, 2017

    @mhegazy
    Mohamed Hegazy (mhegazy)
    on May 18, 2017
    Contributor

    tracked by #5616

  5. microsoft
    locked and limited conversation to collaborators on Jun 19, 2018
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