Deno Build output is broken

[alexl0gan]

I'm trying to compile the following lib file

use wasm_bindgen::prelude::*;
use serde::{Serialize, Deserialize};
use std::collections::HashMap;
use std::iter::FromIterator;


#[derive(Serialize, Deserialize)]
pub struct QueryResult {
  pub data: Vec<String>
}

#[derive(Serialize, Deserialize)]
pub struct VehicleCounts {
  pub data: Vec<(String, u64)>
}

#[wasm_bindgen]
pub fn get_counts(val: &JsValue) -> JsValue {
  println!("here!");
  let query_result: QueryResult = val.into_serde().unwrap();
  let counts = get_counts_imp(query_result.data);
  let vehicle_count = VehicleCounts {
    data: counts
  };

  JsValue::from_serde(&vehicle_count).unwrap()
}

fn get_counts_imp(arr: Vec<String>) -> Vec<(String, u64)>{
  let mut make_counts: HashMap<String, u64> = HashMap::new();

  for vehicle in arr {
      let v = make_counts.entry(vehicle).or_insert(0);
      *v += 1
  }

  let mut hash_vec: Vec<(String, u64)> = Vec::from_iter(make_counts);
  hash_vec.sort_by(|a, b| b.1.cmp(&a.1));
  println!("Sorted: {:?}", hash_vec);

  return hash_vec
}

Using the command

rustwasmc build --target deno

However this causes the following error in Deno

error: Uncaught TypeError: WebAssembly.Instance(): Import #0 module="__wbindgen_placeholder__" error: module is not an object or function
const wasmInstance = new WebAssembly.Instance(wasmModule, imports);

It looks like the offending line is

const wasi = new WASI({
  args: Deno.args,
  env: Deno.env.toObject(),
  preopens: {
    "/": __dirname,
  },
});
---> imports = { wasi_snapshot_preview1: wasi.exports }; <---

const p = path.join(__dirname, "functions_lib_bg.wasm");
const bytes = Deno.readFileSync(p);

Which is clearing the other imports added earlier in the file.