The exclamation mark in TypeScript In many scripting languages, developers use the exclamation mark as a not operator. But when working with TypeScript, the exclamation mark acts as a non-null assertion operator. This non-null assertion will remove null and undefined values. In this article, I...
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The exclamation mark (non-null assertion) operator removes null and undefined from the type of an expression. It is used when we know that a variable that TypeScript thinks could be null or undefined actually isn't. index.ts type Employee = { id: number; name: string; }; function getEm...
The exclamation mark in TypeScript In many scripting languages, developers use the exclamation mark as a not operator. But when working with TypeScript, the exclamation mark acts as a non-null assertion operator. This non-null assertion will remove null and undefined values. In this article, I...