Simplify

3. Plan Refactoring

For each complexity issue:

• What change to make
• Why it improves readability
• Verify it doesn't break library usage

4. Execute Refactoring

Apply changes following these patterns:

Early Return:

// Before
function process(value: number | null): Result | null {
  if (value !== null) {
    if (value > 0) {
      return doSomething(value);
    }
  }
  return null;
}

// After
function process(value: number | null): Result | null {
  if (value === null) return null;
  if (value <= 0) return null;
  return doSomething(value);
}

Extract Function:

// Before
function main() {
  // 50 lines of mixed concerns
}

// After
function main() {
  const data = loadData();
  const result = processData(data);
  saveResult(result);
}

5. Verify with Tests

bunx vitest run

Notes

• Always preserve library features/constraints
• Web search for unclear points
• Don't change behavior (refactoring only)
• Run tests after each significant change