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no-equal-then-else

added in: 1.6.0
warning
🛠
Free+
preset: recommended

Warns when an if statement has equal then and else statements or conditional expression has equal then and else expressions.

Example​

❌ Bad:

final firstValue = 1;
final secondValue = 2;

...

// LINT: This expression has equal 'then' and 'else' branches.
if (condition) {
  result = firstValue;
} else {
  result = firstValue;
}

...

result = condition ? firstValue : firstValue; // LINT: This expression has equal 'then' and 'else' branches.

✅ Good:

final firstValue = 1;
final secondValue = 2;

...

if (condition) {
  result = firstValue;
} else {
  result = secondValue; // Correct, different value
}

...

result = condition ? firstValue : secondValue;

Additional Resources​