cliParser.js

// Copy and paste it into Chrome devtools console to run it
let cliParser = (args) => {   
  let keyValueList = []
  let keyBucket = []
  let valueBucket = []
  let isKey = false
  let isInsideQuote = false
  args += '-' //to add last key value pair
  args.split('').forEach(x =>{
      // console.log('Processing', x)
      // console.log('isKey', isKey)
      // console.log('isInsideQuote', isInsideQuote)
      //console.log(x)
      switch (x) {
        case '-':
          if(isInsideQuote){
            valueBucket.push(x)
          } else {
            if(keyBucket.length > 0){
              keyValueList.push({
              key: keyBucket.join(''),
              value: valueBucket.join('')
              })
            
            keyBucket= []
            valueBucket = []              
            }   
            isKey = true         
          }
          

          break;
        case "'":
          isInsideQuote = !isInsideQuote
          break;
          case " ":
              if(isKey){
                isKey = false
              } else {
                if(isInsideQuote){
                  valueBucket.push(x)
                }
              }
              break
        default:
          if(isKey){ 
            keyBucket.push(x)
          }
          else {
             valueBucket.push(x)
          }             
          
      }

      // console.log('keyBucket', keyBucket)
      // console.log('valueBucket', valueBucket)
      //  console.log('keyValueList', keyValueList)

  })

  console.log('keyValueList', keyValueList)

}

cliParser("-key 'my report-1.txt' -key2 -key3 value3")