Function custom

custom<T = any>(
    key: string,
    validator: (key: string, value: string, options: Options) => T,
    options?: Options | T,
): T
Get the specified env variable value with custom validator.
Type Parameters
- T = any
Parameters
- key: string
  The environment variable key.
- validator: (key: string, value: string, options: Options) => T
  The custom validation function.
- Optionaloptions: Options | T
  Options for retrieving the value.
Returns T
The validated value of the environment variable.