snake to camel & visa-versa for JS

snake_camel_camel_snake.js

(function() {
  var _e = {};

  _e.isPlainObject = function(obj) {
    return obj && obj.constructor === Object;
  };

  _e.camelToSnakeCase = function(string) {
    return string.replace(/\B[A-Z]/g,function(word) {
      return "_" + word.toLowerCase();
    }).toLowerCase();
  };

  _e.snakeToCamelCase = function(str) {
    return str.replace(/_+(\w){1}|-+(\w){1}/g, function(match, group1, group2) {
      var letter = group1 || group2;
      return letter.toUpperCase();
    });
  };

  _e.objectTransform = function(fn,object) {
    if(_.isArray(object)) {
      return _.map(object,function(member) {
        return _e.objectTransform(fn,member);
      })
    } else if (_.isPlainObject(object)) {
      return _.reduce(object,function(transformed,v,k) {
        transformed[fn(k)] = _e.objectTransform(fn,v); 
        return transformed;
      },{});
    } else {
      return object;
    }
  };

  _e.snakeToCamelCaseKeys = _.partial(_e.objectTransform,_e.snakeToCamelCase);
  _e.camelToSnakeCaseKeys = _.partial(_e.objectTransform,_e.camelToSnakeCase);

  _.mixin(_e);
})();