In order to minimize code duplication, I've written some simple JS/TS async functions by encapsulating the respective synchronous function within a Promise. But, not seeing this elsewhere, I'm concerned that I may be missing some design problem(s).

For example:

function fileExistsSync(path: string) {
    try {
        const result = Deno.statSync(path);
        return result.isFile;
    } catch (err) {
        if (err instanceof Deno.errors.PermissionDenied) {
            throw err;
        }
        return false;
    }
}

async function fileExists(path: string) {
    return await Promise.resolve().then(() => fileExistsSync(path));
}

async function fileExistsAsync(path: string) {
    try {
        const result = await Deno.stat(path);
        return result.isFile;
    } catch (err) {
        if (err instanceof Deno.errors.PermissionDenied) {
            throw err;
        }
        return false;
    }
}

Is there any observable difference between the functions fileExists() and fileExistsAsync()?