How to use a TypeScript cast with JSX/TSX

Question

When casting in a .tsx file, the compiler assumes it to be JSX, e.g.:

( event.target).value

gives an e

Answer 1

The as operator was introduced to TypeScript 1.6 to replace casts in .tsx files, e.g.:

(event.target as HTMLInputElement).value

The TypeScript wiki explains the 1.6 changes: it makes the new as operator the default way to cast (removing any ambiguity between JSX expressions and the TypeScript prefix cast operator)