What are the "(import "a" "a" (func (;0;) (type 11)))" statements for?

[arcanis]

I'm trying to use an Emscripten-compiled project into a Webpack project, but I get errors where Webpack fails to resolved 'a'. I ran wasm2wat and found that indeed, the Wasm binary contains some curious import statements:

...
  (import "a" "a" (func (;0;) (type 11)))
  (import "a" "b" (func (;1;) (type 5)))
  (import "a" "c" (func (;2;) (type 0)))
  (import "a" "d" (func (;3;) (type 6)))
  (import "a" "e" (func (;4;) (type 15)))
  (import "a" "f" (func (;5;) (type 8)))
  (import "a" "g" (func (;6;) (type 0)))
  (import "a" "h" (func (;7;) (type 0)))
  (import "a" "i" (func (;8;) (type 11)))
  (import "a" "j" (func (;9;) (type 9)))
  (import "a" "k" (func (;10;) (type 16)))
  (import "a" "l" (func (;11;) (type 0)))
  (import "a" "m" (func (;12;) (type 3)))
  (import "a" "n" (func (;13;) (type 7)))
  (import "a" "o" (func (;14;) (type 9)))
  (import "a" "p" (func (;15;) (type 9)))
  (import "a" "q" (func (;16;) (type 2)))
  (import "a" "r" (func (;17;) (type 3)))
  (import "a" "s" (func (;18;) (type 12)))
  (import "a" "t" (func (;19;) (type 1)))
  (import "a" "u" (func (;20;) (type 0)))
  (import "a" "v" (func (;21;) (type 2)))
  (import "a" "w" (func (;22;) (type 2)))
  (import "a" "x" (func (;23;) (type 7)))
  (import "a" "y" (func (;24;) (type 5)))
  (import "a" "z" (func (;25;) (type 3)))
  (import "a" "A" (func (;26;) (type 7)))
...

What are they used for? If their presence is expected, do you know how to tell Webpack to ignore them?

[kripken]

Those are minified import names. They are minified to a,b,c etc. to save space.

To know what they are and why they are used, generally you would make a debug build with opts (e.g. -O3 -g).