External module "assert/is-undefined-or-null/docs/types/index.d"

Export assignment isUndefinedOrNull

• isUndefinedOrNull(value: any): boolean

• Tests if a value is undefined or null.

  Parameters

  • value: any

    value to test

  Returns boolean

  boolean indicating whether value is undefined

  Example

  var bool = isUndefinedOrNull( undefined );
  // returns true
  
  bool = isUndefinedOrNull( null );
  // returns true
  
  bool = isUndefinedOrNull( false );
  // returns false