Function elly_run 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn elly_run(
    ptr: *const u8,
    len: usize,
) -> *mut u8

Run len UTF-8 bytes at ptr through the pipeline; return length-prefixed JSON.

Safety

ptr/len must describe a valid, initialized block of linear memory (e.g. one from elly_alloc that JS has filled). The returned block is owned by the caller and must be released with elly_free.