Tech Challenge
2026-06-23
🔷
Daily Tech Challenge
TypeScript
medium
Question 1 of 5
With `x` typed as `unknown`, which single operation does the compiler allow without any narrowing?
Example
function handle(x: unknown) {
// A: x.toFixed(2)
// B: x === 5
// C: x.length
// D: x + 1
}Tuesday, June 23, 2026 · A new challenge drops every day