Function required

required<T>(arg, name, type?): T
Verify that a variable is defined and optionally of a given type.
Type Parameters
- T
Parameters
- arg: T
  
  the argument to verify
- name: string
  
  a descriptive name of arg
- Optional type: (new (...args) => any)
  
  if provided, verify that arg is an instanceof this type
  - - new (...args): any
    - Parameters
      
      Rest ...args: any[]
      
      Returns any
Returns T
the passed in arg value
- Defined in utils.ts:84

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