The Array.reduce() is an inbuilt TypeScript function which is used to apply a function against two values of the array as to reduce it to a single value.
Parameter: This method accept two parameter as mentioned and described below:
- callback : This parameter is the Function to execute on each value in the array.
- initialValue : This parameter is the Object to use as the first argument to the first call of the callback.
Return Value: This method returns the reduced single value of the array.
Below examples illustrate the Array reduce() method in TypeScript