Stripe Frontend Engineer Coding Questions

In Stripe's dashboard, users can quickly search through numerous products. To optimize this, we need to implement a binary search algorithm over a sorted list of product names to identify the target product efficiently.
Problem statement: Please implement a function searchProduct(products: List[str], target: str) -> int that returns the index of the target product in the sorted list. If the product doesn’t exist, return -1.
- Example 1:
- Input: searchProduct(['apple', 'banana', 'grape', 'orange'], 'banana')
- Output: 1
- Explanation: 'banana' is found at index 1.
Constraints:
- The list of products should be sorted in ascending order.
- The target product is guaranteed to be a non-empty string.

In complex payment flows, it's essential to manage callback functions efficiently with closures. This is crucial to ensure that payment button interactions on Stripe’s checkout experience are smooth and handle dynamic pricing changes.
Problem statement: Please implement a function handlePaymentClick() which accepts a price parameter and returns a closure. This closure must log the price when called and should be debounced to limit the number of times it can be called within a specified interval (timeFrame). Ensure mixed payment event parameters such as successful and failed transactions are efficiently handled without excessive console logs.
- Example 1:
- Input: handlePaymentClick(100)
- Output: Closure
- Explanation: When the returned closure is called, it should log 100 as the price.
Constraints:
- The timeFrame will be defined as 200 milliseconds.
- The price is always a positive number between 1 and 10000.