My utility functions.

utils.js

const convertSecondsToMinutesAndSeconds = (secs) => new Date(secs * 1000).toISOString().substring(14, 19) 

/**
  * Given a 'string date,' get the age in years.
  * @param {string} d - 'string date' like from 'date input'
  * @returns {number}
 */ 
function getAgeFromDate(d) {
  return Math.floor((new Date() - new Date(d)) * 3.17098e-11));
}

/**
 * Given a full directory and file path, split this into the directory path and file name
 * @param {string} fullPath
 * @returns {Array[string]} - First element is the directory path and other is file name
 */
export const fileDirSplit = (fullPath) => {
  const pathStrSplit = fullPath.split('/')
  const fileName = pathStrSplit.pop()
  const directoryPath = pathStrSplit.join('/')

  return [directoryPath, fileName]
}

/**
 * Given a path to a JSON file, kindly give back JS
 * @param files {Array[string]} - File paths relative to execution context
 */
export const getJSFromJSONFiles = (files) => Promise.all(files.map(async file => JSON.parse(await fs.readFile(file, 'utf-8'))))

/**
 * Convert all 'prices' that might be strings into 'floating numbers'.
 * @param arr {Array[Object]} - Each object should have a property 'price'
 * @return {Array[Object]} - Any string price has been 'numberified'
 */
export const numberifyPrices = (arr) => arr.map(el => {
  // Remove commas if it's a string
  el.price = typeof el.price === 'string' ? el.price.replace(/,/g, '') : el.price
  el.price = parseFloat(el.price)
  return el
})


// formElements comes from event.target.elements
export const processFormSubmissions = (formElements) => Array.from(formElements)
    .filter(({ id }) => id)
    .reduce(
      (submissionDeets, currentEl) => {
          submissionDeets[currentEl.id] = currentEl.value
          return submissionDeets
        },
      {}
    );

export const removeDuplicates = (arr) => [...new Set(arr)]

export const textifyHTML = (html) =>
  html
    .replace(/(<([^>]+)>)/gi, '')
    .replace(/&nbsp;/gi, '')
    .replace(/\r?\n|\r/g, ' ')
    .split(' ')
    .filter((str) => str.length)
    .join(' ')