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Implementation of inheritance not compatible with Object.getOwnPropertyNames() #13163

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Implementation of inheritance not compatible with Object.getOwnPropertyNames()#13163
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Working as IntendedThe behavior described is the intended behavior; this is not a bug

Description

@haseebeqx
Haseeb Annadamban (haseebeqx)
opened on Dec 25, 2016

TypeScript Version: 2.12.0

Code

class A{
private n :number= 1;
public x :number =2;
protected y: number =3;
}
class B extends A{
private m :number = 2;
}

var obj = new B();
console.log(Object.getOwnPropertyNames(obj));

Expected behavior:
this should only give ['m']

Actual behavior:
this when running with nodejs compiled with commonjs module gives [ 'n', 'x', 'y', 'm' ]

Activity

  1. aluanhaddad commented on Dec 25, 2016

    @aluanhaddad
    Aluan Haddad (aluanhaddad)
    on Dec 25, 2016
    Contributor

    See this comment #10425 (comment) and the question above it.

  2. mhegazy commented on Dec 26, 2016

    @mhegazy
    Mohamed Hegazy (mhegazy)
    on Dec 26, 2016
    Contributor

    should be addressed by #12488

  3. Mohamed Hegazy (mhegazy)
    added
    SuggestionAn idea for TypeScript
    on Dec 26, 2016
  4. Ryan Cavanaugh (RyanCavanaugh)
    added
    Working as IntendedThe behavior described is the intended behavior; this is not a bug
    and removed
    SuggestionAn idea for TypeScript
    on Aug 13, 2018

  5. RyanCavanaugh commented on Aug 13, 2018

    @RyanCavanaugh
    Ryan Cavanaugh (RyanCavanaugh)
    on Aug 13, 2018
    Member

    This is the expected behavior

  6. Ryan Cavanaugh (RyanCavanaugh)
    closed this as completedon Aug 13, 2018
  7. microsoft
    locked as resolved and limited conversation to collaborators on Oct 21, 2025
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