Guidelines
Prefer Named Variable Over Complex Conditional

Prefer:

// Giving the variable a descriptive // domain-relevant will clarify the // code and often removes the need // for an explanatory comment. const isComplexCondition = isThis || (isThat && isAnother); if (isComplexCondition) { // Handle the scenario }

Instead of:

// It's much harder to determine what // the domain-specific intent is when // a conditional is inlined like this. if (isThis || (isThat && isAnother)) { // Handle the scenario }

Rationale

As noted above, extracting a clear, domain-relevant named local variable to capture the result of a complex conditional expression serves the purposes of clarifying the semantics of the conditional expression. Doing this often removes the need for explanatory comments completely.

Created by Caleb Peterson
Soli Deo Gloria