TypeScript

Removing null from a type using distribution in TypeScript

TypeScriptConditional TypesDistributive Conditional Typesintermediate

What this snippet does

Distributive conditionals evaluate each member of a union independently, allowing precise type stripping.

Expected output

a

Why practise typing this

Typing conditional types code builds muscle memory for the symbols and indentation TypeScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.

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