Advent of Code day 1

day1.js

// Done purely in the browser console, using temp1 which is the input text as a Global Variable
// Might not give actual results, I started creating gists on day 2 and mostly recovered this from console history! 😆

const text = () => temp1.textContent.split('\n')

const getFirstAndLastInteger = (str) => {
  const integers = str.split('').map(s => Number(s)).filter(Boolean)

  return Number(`${integers[0]}${integers[integers.length - 1]}`)
}

const regex = /(one|two|three|four|five|six|seven|eight|nine)/

const wordMap = {
    'one': 'o1e',
    'two': 't2o',
    'three': 't3e',
    'four': 'f4r',
    'five': 'f5e',
    'six': 's6x',
    'seven': 's7n',
    'eight': 'e8t',
    'nine': 'n9n'
}

const parsed = (source) => {
   let last = source

    while (true) {
          if (last.match(regex) === null) return last;
          const result = last.replace(regex, (match) => wordMap[match])
          last = result
    }
}

const part1Results = text().slice(0, text().length - 1).reduce((total, currentInstructions) => {
   const toAdd =  getFirstAndLastInteger(currentInstructions)

    return total + toAdd
}, 0)


const part2Results = text().slice(0, text().length -1).reduce((total, currentInstructions) => {
   const correctedString = parsed(currentInstructions)
   const toAdd =  getFirstAndLastInteger(correctedString)

   return total + toAdd
}, 0)