Guidelines
Prefer Const To Let

Prefer:

const myValue = isConditionTrue ? maybeValue : undefined;

Instead of:

let myValue; if (isConditionTrue) { myValue = maybeValue; }

Rationale

Though a bit more syntactically dense, this improves maintainability because the reader never need ask/answer the question "under what circumstances might myValue be re-assigned to a different value?"

Created by Caleb Peterson
Soli Deo Gloria