Option 'strictPropertyInitialization' cannot be specified without specifying option 'strictNullChecks'

[marcomura]

Upgrading from 2.8.1 to 2.9.1, I'm now getting the error in the title.
Why strictPropertyInitialization now can't be specified without strictNullChecks? Is it a bug?

[a-tarasyuk]

@marcomura I think, it is not a bug, see #23659

[RyanCavanaugh]

SPI does nothing if SNC isn't on, so this warning is to tell you that you're not doing what you think you are

[marcomura]

Why strictPropertyInitialization should require strictNullChecks?

class C {
    foo: number;
    bar = "hello";
    baz: boolean;
    //  ~~~
    //  Error! Property 'baz' has no initializer and is not assigned directly in the constructor.
    constructor() {
        this.foo = 42;
    }
}

Without stringNullChecks, I can solve the error explicitly assigning undefined to baz.

[marcomura]

Ping on this :)

[mhegazy]

Please see what --strictNullChecks really mean at https://github.com/Microsoft/TypeScript/wiki/What's-new-in-TypeScript

[marcomura]

That's why I can't see its relation with --strictPropertyInitialization

[typescript-bot]

Automatically closing this issue for housekeeping purposes. The issue labels indicate that it is unactionable at the moment or has already been addressed.