Grokking Node.js Design Patterns for Interviews/

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Format Greetings in Multiple Styles

Format Greetings in Multiple Styles

Build a message formatter that can switch between multiple output styles—casual, formal, and JSON—without modifying the main formatting logic.

We'll cover the following...

Problem statement

Your team is building a notification system that sends personalized greetings. Different teams want the message formatted differently:

  • Marketing prefers a casual tone.

  • HR needs a formal version.

  • The API team wants the data in JSON ...