[Data transforms]

secondsHelpers.js

function pad(toPad, padBy = 2, padWith = '0') {
	return ('' + toPad).length < padBy ? `${pad(padWith + toPad, padBy, padWith)}` : toPad;
}

function secondsToHMS(totalSeconds) {
  var hours = totalSeconds / 3600 - totalSeconds % 3600 / 3600;
  var minutes = ((totalSeconds % 3600 / 3600) * 60) - ((totalSeconds % 3600 / 3600) * 60) % 1;
  var seconds = totalSeconds % 60;
  return `${pad(hours)}:${pad(minutes)}:${pad(seconds)}`;
}

standardizeDistance.js

const getStandardDistanceinKM = (stringDist) => {
    const numDist = stringDist.match(/([0-9.]+)\s?(k?m)(\s|$)/i);
    if(!numDist) {
      return false
    }
    const [full, num, units] = numDist;
    let dist = num;
    if(units=='m'){
      dist=dist/1000;
    } else if(units!='km') {
      throw new Error('no valid units');
    }
    return dist;
}

console.log(getStandardDistanceinKM('12km')); //  12
console.log(getStandardDistanceinKM('12 km')) //  12
console.log(getStandardDistanceinKM('12.3km')) // 12.3
console.log(getStandardDistanceinKM('12.3 km')) //12.3
console.log(getStandardDistanceinKM('12.3 m')) // 0.0123
console.log(getStandardDistanceinKM('100m')) //   0.1

console.log(getStandardDistanceinKM('This bend trip 12km')); //     12km
console.log(getStandardDistanceinKM('a lon km waltk 12 km trip')) //12 km
console.log(getStandardDistanceinKM('Walk on the beack')) //        false