Update the property and invoke the original base version

I am attempting to modify a property from a parent class and then invoke the original version of that property within the modification (using TypeScript playground):

class A {
    public get a(): number {
        return 1;
    }
}

class B extends A {
    public get a(): number {
        return super.a + 1; // error TS2340: Only public and protected methods of the base class are accessible via the 'super' keyword.
    }
}

However, I encounter an error from the TypeScript compiler:

error TS2340: Only public and protected methods of the base class are accessible via the 'super' keyword.

Is there a way to override a property of a base class and still access the original property from the override?

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