Non-compilable Javascript files

[Neutrino6]

Hello, I was trying to compile some Javascript files. Many of them don't compile because of this issue. Is it a bug from javy itself? The files look like they have no errors, only warnings.
Other pretty common errors that show up when compiling with javy are as follows: "expected token: '(' " or "unexpected token in expression: '}' " .
Thank you

osboxes@osboxes:~/Desktop$ RUST_BACKTRACE=1 ./javy build Js_fix/20151215_6cdcaffda926f503edc872256d65dea7.js

thread '' panicked at crates/plugin-api/src/lib.rs:119:10:
called Result::unwrap() on an Err value: Error:[function.mjs]:7:24 invalid redefinition of global identifier in module code
at function.mjs:7:24

note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
Error: JS compilation failed

Stack backtrace:
0: anyhow::error::::msg
1: javy_codegen::plugin::Plugin::compile_source
2: javy_codegen::Generator::generate
3: javy::main
4: std::sys::backtrace::__rust_begin_short_backtrace
5: main
6: __libc_start_call_main
at ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
7: __libc_start_main_impl
at ./csu/../csu/libc-start.c:392:3
8: _start

[saulecabrera]

Can you share the actual JS code?

[Neutrino6]

Yes, here you are. It is a malware: we are compiling JS code into WASM for research purposes
20151215_6cdcaffda926f503edc872256d65dea7.js.zip

[jeffcharles]

Is it a bug from javy itself?

Most likely not. Javy delegates to QuickJS to perform compilation from JS source code to QuickJS bytecode and those error messages look like QuickJS error messages.

[dantinkakkar]

It is a malware: we are compiling JS code into WASM for research purposes

Might be helpful to share a snippet instead of a link