Confusion

[AliEl4eikh]

react-and-typescript-projects/examples/19-pizza-calculator-complete/src/Application.tsx

Line 40 in b166519

return addPizzasNeededToPizzaData({

how do we pass an object of type PizzaState to a function "addPizzasNeededToPizzaData" which accepts a parameter data and its type is of PizzaData?