convert pascal case to snake case js code example

Example: to pascal case javascript

/** 
 * toPascalCase
 * @param {String} input 
 * @returns A string that has been converted into Pascal Case for keeping with the React Naming convention required for naming Components. 
 * @see https://stackoverflow.com/a/53952925/13301381 
 * @author kalicki2K 
 */
function toPascalCase(input){
    return `${input}`
      .replace(new RegExp(/[-_]+/, 'g'), ' ')
      .replace(new RegExp(/[^\w\s]/, 'g'), '')
      .replace(
        new RegExp(/\s+(.)(\w+)/, 'g'),
        ($1, $2, $3) => `${$2.toUpperCase() + $3.toLowerCase()}`
      )
      .replace(new RegExp(/\s/, 'g'), '')
      .replace(new RegExp(/\w/), s => s.toUpperCase());
}