Unexpected behavior while importing npm module

Im trying to use

dns2

dns2

dns2

dns2 library in my deno project:

import { Packet } from 'npm:dns2'

import { Packet } from 'npm:dns2'

import { Packet } from 'npm:dns2'

import { Packet } from 'npm:dns2'

And I get this error:

& deno run -A --watch src/index.ts
error: Uncaught SyntaxError: The requested module 'npm:dns2' does not provide an export named 'Packet'

& deno run -A --watch src/index.ts
error: Uncaught SyntaxError: The requested module 'npm:dns2' does not provide an export named 'Packet'

& deno run -A --watch src/index.ts
error: Uncaught SyntaxError: The requested module 'npm:dns2' does not provide an export named 'Packet'

& deno run -A --watch src/index.ts
error: Uncaught SyntaxError: The requested module 'npm:dns2' does not provide an export named 'Packet'

But if I import this library in a different way, then everything works:

import dns from 'npm:dns2'
console.log(dns.Packet)

import dns from 'npm:dns2'
console.log(dns.Packet)

import dns from 'npm:dns2'
console.log(dns.Packet)

import dns from 'npm:dns2'
console.log(dns.Packet)

Output:

[Function: Packet] {
  TYPE: {
...

[Function: Packet] {
  TYPE: {
...

[Function: Packet] {
  TYPE: {
...

[Function: Packet] {
  TYPE: {
...

What am I doing wrong?

Deno v1.44.4