`type importdesc =`

1. `| Func of int`
2. `| Table`
3. `| Mem`
4. `| Global`
5. `| Tag`

`type import = {`

1. `module_ : string;`
2. `name : string;`
3. `desc : importdesc;`

`}`
`val check : contents:string -> bool`

Checks whether `contents` is a Wasm Module

`val check_file : file:string -> bool`

Checks whether `file` contains a Wasm Module

`val read_imports : file:string -> import list`
`val append_source_map_section : file:string -> url:string -> unit`