How to allow class functions to be nullable

Asked Nov 23 '20 at 12:25

Active Nov 23 '20 at 12:25

Viewed 18 times

I want to allow the class function to be nullable(In short support something like this):

class Example {
    a?: string;
    c?: string;
    b() {
        console.log(this.a);
    }
}

let c = (x: Example) {
    console.log('run');
}
c({a: "123"});

Background: I've added some presave hook for typeorm due to which most of the code has broken. I'd like to support it without breaking anything.

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asked Nov 23 '20 at 12:25

Black Mamba

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`b?() { .... }`? But at that point you should probably have an *interface*, rather than a class. – jonrsharpe Nov 23 '20 at 12:28
That's right @jonrsharpe thank you. Can you please add it as an answer else I'll be doing that – Black Mamba Nov 23 '20 at 12:29
Possible duplicate of https://stackoverflow.com/a/27523954/12397250? – Owl Nov 23 '20 at 12:30
https://stackoverflow.com/a/53145280/6517383 is the answer that I was looking for since it's not that rated I think that's why I missed it. – Black Mamba Nov 23 '20 at 12:35

How to allow class functions to be nullable

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