module.exports = (string) => {
  let formatted = [];
  let i = 0;
  while(i < string.length) {
    if (string[i] === 'b') {
      formatted.push({'b': 123});
    } else {
      formatted.push({[string[i]: 456}});
    }
    i ++;
  }
  return formatted;
}

const charValueMatcher = require('./charValueMatcher');

console.log(charValueMatcher('ManyLettersandbitsAndThings'));