index.js

/**
 * "dot.case"
 */

exports.dotCase = function(string) {
  return exports.separatorCase(string, '.');
}

/**
 * "ClassCase"
 */

exports.classCase = function(string) {
  return exports.separatorCase(string, '_').replace(/(?:^|_|\-|\/)(.)/g, function(match, c) {
    return c.toUpperCase();
  });
}

/**
 * "Namespace.Case"
 */

exports.namespaceCase = function(string) {
  return exports.separatorCase(string, '.').replace(/(^|_|\.|\-|\/)(.)/g, function(match, p, c) {
    return p + c.toUpperCase();
  });
}

/**
 * "CONSTANT_CASE"
 */

exports.constantCase = function(string) {
  return exports.separatorCase(string, '_').replace(/[a-z]/g, function(c) {
    return c.toUpperCase();
  });
}

/**
 * "camelCase"
 */

exports.camelCase = function(string) {
  return exports.separatorCase(string, '_').replace(/[-_\.\/\s]+(.)?/g, function(match, c) {
    return c.toUpperCase();
  });
}

/**
 * "Title Case"
 */

exports.titleCase = function(string) {
  return exports.separatorCase(string, ' ').replace(/(?:^|\s)\S/g, function(c) {
    return c.toUpperCase();
  });
}

/**
 * "snake_case"
 */

exports.snakeCase = function(string) {
  return exports.separatorCase(string, '_');
}

/**
 * "path/case"
 */

exports.pathCase = function(string) {
  return this.separatorCase(string, '/');
}

/**
 * "param-case"
 */

exports.paramCase = function(string) {
  return this.separatorCase(string, '-');
}

/**
 * Generic string transform.
 */

exports.separatorCase = function(string, separator) {
  return exports.clean(exports.trim(string), separator).replace(/([a-z\d])([A-Z]+)/g, '$1' + separator + '$2').replace(/(([A-Z])(?=[A-Z][a-z]))/g, '$1' + separator).replace(/(([a-z])(?=[A-Z][a-z]))/g, '$1' + separator).replace(/[-\.\/\_\s]+/g, separator).toLowerCase();
}

/**
 * Remove non-word characters.
 */

exports.clean = function(string, separator) {
  return string.replace(/\W+/g, separator || ' ');
}

/**
 * Remove non-word from the start/end of the string only.
 */

exports.trim = function(string) {
  return string.replace(/^\W+|\W+$/g, '');
}