JavaScript: Optional chaining and nullish coalescing

A short, tested JavaScript example for optional chaining and nullish coalescing. Copy it and adjust the names and paths for your project.

JavaScript

const city = user?.address?.city ?? "Unknown";
const first = list?.[0];
const result = obj.method?.();

// ?? only replaces null/undefined, || replaces any falsy value
0 ?? 5;  // 0
0 || 5;  // 5

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