Are 'The Witcher' Games Part of the Fictional Universe's Canon?

It's no secret that 'The Witcher' games were instrumental in bringing Andrzej Sapkowski's work to the masses, but are they canon?

Is Geralt of Rivia, shown in the video games, loyal to the original character of the Witcher books written by Sapkowski? - Quora

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The Witcher Volume 3: Curse of Crows eBook : Tobin, Paul, Kowalski, Piotr, Filardi, Nick: Kindle Store

Are 'The Witcher' Games Part of the Fictional Universe's Canon?

The Witcher (Franchise) - TV Tropes