ans.js

const getSums = (intArr) => {
  let valuesArray = []
  intArr.forEach((eachVal, eachIndex, arr) => {
     for (let i = 0; i < arr.length - 1; i++) { // run on every element except the last one
        if (valuesArray.every(el => el !== eachVal)) { // don't push duplicate items
          valuesArray.push(eachVal + arr[i + 1])   // add adjacent element to selected element
        }
     }
  })
  return valuesArray.sort((p, n) => p > n) // sort from lowest to highest for clarity
}

const matchSums = (intArr, ...intToMatch) => {
  return [...intToMatch].some(eachArg => {
    return getSums(intArr)
      .some(el => el === eachArg)
  })
}