API Reference > bentleyjs-core > Collections > PriorityQueue > _peek _peek MethodProtected Returns the value at the specified index in the queue. _peek(index: number): T | undefined Parameter Type Description index number The index of the value to retrieve Returns - T | undefined the value at the specified index, or undefined if the index is out of range. Defined in core/bentley/src/PriorityQueue.ts Line 157 Last Updated: 15 June, 2021