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Discussion on: A "Gotcha" of JavaScript's Pass-by-Reference

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Replies for: Here's an example from the C# docs (though massively naive and antipattern-ish, because one would never have to do this). Notice two ref keywords m...

 
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Netional •

I recently came across a Typescript use case (admittedly seldom happens) for reference to the reference in which I wanted to have a function that disposes of passed in class members and set them to undefined. This is not possible in JS or Typescript as far as I can see.

private DisposeOrbitalControls(orbitControls: OrbitControls | undefined): void {
    if (orbitControls !== undefined) {
      orbitControls.dispose();
      orbitControls = undefined
    }
}

this.DisposeOrbitalControls(this.orbitControlsOrtho)
this.DisposeOrbitalControls(this.orbitControlsPerspective)
//this.orbitControlsOrtho and this.orbitControlsPerspective are not set to undefined
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