Function lookup

lookup(
questions: Question.Type | Question.Type[],
options?: Partial<{ host: string; port: number; timeout: number }>,
): Promise<[undefined | Response, undefined | Error]>
Performs a DNS lookup of the supplied Questions.

Note: This method automatically switches to a TCP-based query if a UDP-based query receives a response with the truncated bit set.
Parameters
- questions: Question.Type | Question.Type[]
- options: Partial<{ host: string; port: number; timeout: number }> = {}
Returns Promise<[undefined | Response, undefined | Error]>