HaltingSolution.js

while (...) {
    promises.push(new Promise((...) => {
       ...
       const halt = (reason) => {
          fatalPromises.push(new Promise((...) => {
              Promise.allSettled(workers.map(w => w.terminate()))
              .then(() => {
                  resolve2(reason)
              })
          }))
          reject()
       }
       ...
    })
}