snake_case camelCase conversion

caseConverters.js

const notAlphaNumericUnderscoreNorWhitespace = /[^\w\s]/g;
const whitespace = /\W+/g;
    
function camelCase (string) {
  return string
    .trim()
    .replace(notAlphaNumericUnderscoreNorWhitespace, '')
    .split(whitespace)
    .map((string, index) => {
      return (index)
        ? string.charAt(0).toUpperCase() + string.slice(1)
        : string.toLowerCase();
    })
    .join('');
}

function snakeCase (string) {
  return string
    .trim()
    .replace(notAlphaNumericUnderscoreNorWhitespace, '')
    .replace(whitespace, '_')
    .toLowerCase();
}