Function: isRegExp()

isRegExp(val): val is RegExp

Type guard to check if a value is a RegExp instance.

Parameters

val

unknown

The value to check

Returns

val is RegExp

True if the value is a RegExp

Example

const value: unknown = /^test$/i

if (isRegExp(value)) {
  // TypeScript knows value is a RegExp
  console.log(value.test('TEST')) // true
}