TypeScript 5.4 — Everything You Need to Know About the New Features

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Why Does This Matter?

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Practical examples

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// Example implementation
export async function getData() {
  const response = await fetch('/api/data', {
    cache: 'force-cache',
    next: { revalidate: 3600 }
  });
  return response.json();
}

Summary

• ✓Understand the problem before you start coding
• ✓Test early and often
• ✓Document key architectural decisions
• ✓Don't optimise prematurely