In TypeScript, what does `type IsAny = 0 extends (1 & T) ? true : false` detect?

TypeScript Professional Hard

TypeScript Professional — Hard

In TypeScript, what does `type IsAny = 0 extends (1 & T) ? true : false` detect?

Key points

  • This code snippet uses a conditional ternary operator to determine if T is the `any` type.
  • The expression `0 extends (1 & T)` is a trick to check for the `any` type.
  • If the condition is true, the type `IsAny` will be set to true; otherwise, it will be set to false.

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