What is Declaration Merging in TypeScript, and how can it be used?
Instruction: Provide an explanation of the Declaration Merging concept with examples of its practical applications.
Context: Aims to evaluate the candidate's understanding of TypeScript's unique feature, Declaration Merging, and its ability to merge two or more separate declarations into a single definition.
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For instance, consider the scenario where you're working on a large-scale application as a Frontend Developer. Here, interfaces become incredibly useful for defining the shape of data across the application...