You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mod.rs
    path of file: ./repos/wasmer/lib/wasix/src/utils
    
    the code of the file until where you have to start completion: mod dummy_waker;
mod owned_mutex_guard;
pub mod store;
mod thread_parker;

#[cfg(feature = "js")]
pub(crate) mod web;

pub use self::{dummy_waker::WasiDummyWaker, thread_parker::WasiParkingLot};

pub(crate) use owned_mutex_guard::{
    read_owned, write_owned, OwnedRwLockReadGuard, OwnedRwLockWriteGuard,
};

use std::collections::BTreeSet;

use wasmer::Module;
use wasmer_wasix_types::wasi::Errno;

/// Check if a provided module is compiled for some version of WASI.
/// Use [`get_wasi_version`] to find out which version of WASI the module is.
pub fn is_wasi_module(module: &Module) -> bool {
    get_wasi_version(module, fal
    
pub fn get_wasi_version(module: &Module, strict: bool) -> Option<WasiVersion> {
    let mut imports = module.imports().functions().map(|f| f.module().to_owned());

    if strict {
        let first_module = imports.next()?;
        if imports.all(|module| module == first_module) {
            match first_module.as_str() {
                SNAPSHOT0_NAMESPACE => Some(WasiVersion::Snapshot0),
                SNAPSHOT1_NAMESPACE => Some(WasiVersion::Snapshot1),
                WASIX_32V1_NAMESPACE => Some(WasiVersion::Wasix32v1),
                WASIX_64V1_NAMESPACE => Some(WasiVersion::Wasix64v1),
                _ => None,
            }
        } else {
            None
        }
    } else {
        // Check that at least a WASI namespace exists, and use the
        // first one in the list to detect the WASI version.
        imports.find_map(|module| match module.as_str() {
            SNAPSHOT0_NAMESPACE => Some(WasiVersion::Snapshot0),
            SNAPSHOT1_NAMESPACE => Some(WasiVersion::Snapshot1),
            WASIX_32V1_NAMESPACE => Some(WasiVersion::Wasix32v1),
            WASIX_64V1_NAMESPACE => Some(WasiVersion::Wasix64v1),
            _ => None,
        })
    }
}