function isInstance<T>(it: unknown, constructor: Constructor<T>): it is T;

Checks if a given value is an instance of a specific class or constructor.

This is a type guard function that can be used to determine if a value is an instance of a class or constructor function, even if the class is not directly accessible in the current scope.

true if it is an instance of the class; otherwise, false.

Guards

function isInstance<T extends Constructor<any>>(
  it: unknown,
  constructor: T,
): it is InstanceType<T>;

Checks if a given value is an instance of a particular class or constructor.

true if it is an instance of the class; otherwise, false.

Guards

function isInstance<T extends Constructor<P>, P = InstanceType<T>>(
  it: unknown,
  constructor: T | Constructor<P> | P,
): it is InstanceType<T>;

Checks if a given value is an instance of a specific class or constructor.

true if it is an instance of the class; otherwise, false.

Guards