giritharan
Wed May 08 2024
Difference between
any:
- The
- While
unknown:
- The
- Variables of type
Both
#typescipt #javascipt
any
and unkown
type in tsany:
- The
any
type is a dynamic type, variables of type any
can hold values of any data type, and TypeScript type checking is effectively turned off for them.- While
any
provides flexibility, it bypasses TypeScript's type checking entirely, which can lead to loss of type safety and potentially introduce bugs.unknown:
- The
unknown
type is a type-safe counterpart of any
. It represents values of an unknown type.- Variables of type
unknown
can hold values of any type, but you cannot perform operations
on them without first narrowing their type or asserting a more specific type.Both
any
and unknown
provide flexibility in handling values of unknown types, any
completely disables type checking, while unknown
enforces type safety by requiring you to explicitly narrow the type before performing operations on the value. It's generally recommended to prefer unknown
over any
when dealing with values of unknown types, as it helps maintain type safety in your TypeScript code.#typescipt #javascipt