index.js

import { pipeline, env } from 'https://cdn.jsdelivr.net/npm/@xenova/transformers@2.10.1';

// skip local model check
env.allowLocalModels = false;

var PROMPT_INPUT = `The pickle has a job as a [MASK] and feels so-so about it.`
var OUTPUT_LIST = []

async function fillIn(){
  const fillInTask = await pipeline('fill-mask', 'Xenova/bert-base-uncased');
  
  var out = await fillInTask(PROMPT_INPUT);

  console.log(await out)
  
  // await out.forEach(o => {
  //   console.log(o) // yields { score, sequence, token, token_str } for each result
  //   OUTPUT_LIST.push(o.sequence) // put only the full sequence in a list
  // })
  
  // console.log(OUTPUT_LIST)

  return await out
}

await fillIn()