Claire Saffitz choc chip cookie

https://www.youtube.com/watch?v=kPauR6tP_cg

• 2 sticks unsalted butter (227g)
• 2 tbsp heavy cream (28g)
• 2 cups plain flour (all-purpose) (260g)
• 2 teaspoons diamond crystal kosher salt (6g)
• 1 tsp bicarbonate soda (baking soda) (6g)
• 3/4 cup packed dark brown sugar (150g)
• 3/4 cup caster sugar (granulated) (150g)
• 2 large eggs (100g), cold from fridge
• 1 tbsp vanilla extract (TABLE)
• 142g dark chocolate disks, half coarsely chopped
• 142g milk chocolate disks, half coarse oh chopped