code: function getAuthor(packageJson) {
  	if (Array.isArray(packageJson.authors)) {
  		packageJson.authors = packageJson.authors.map(author => {
  			if (typeof author === 'string') {
  				return getPersonObject(author);
  			}
  
  			return getAllStar(author);
  		});
  
  		return packageJson.authors ? packageJson.authors : false;
  	}
  
  	if (typeof packageJson.author === 'string') {
  		return getPersonObject(packageJson.author);
  	}
  
  	return packageJson.author ?
  		getAllStar(packageJson.author) :
  		false;
  }
docs: Extract author from package.json content
  
  @param  {Object} packageJson content of package.json
  
  @return {Object|false}       author if exists or false
  
  @tested