beginner, excuse me.

1. Question
tried to wrap my js file with UMD writing, but failed in the vue + webpack project after using normal writing. After
npm run dev, the console reported an error

2.
(1) File directory:

2:
example1.js

example2.js

main.js

3.

4.
1AMDOK
2 typeof module === "object" OK,typeof module === "object"typeof define === "function"
:

:typeof define === "function" true

typeof module === "object"

typeof define === "function" false:

the same problem will occur without console.log, judging in else if (). For the results viewed in the npm run dev environment, thank you