Modern JavaScript from the Beginning - Second Edition - Refactor to Single _newItem Method

The video tutorial explains how to combine separate methods for meals and workouts into a single 'new item' method. It covers passing parameters, distinguishing between meal and workout types, renaming methods, handling event objects, and using dynamic types. The tutorial also demonstrates conditional logic for creating meal or workout objects and final adjustments to ensure the method works correctly without repetition.

Explain how template strings are used in the context of collapsing items.

What is the significance of not repeating code when adding meals and workouts?