import {StringWrapper, isPresent} from 'angular2/src/facade/lang';

export const NG_BINDING_CLASS_SELECTOR = '.ng-binding';
export const NG_BINDING_CLASS = 'ng-binding';

export const EVENT_TARGET_SEPARATOR = ':';

var CAMEL_CASE_REGEXP = /([A-Z])/g;
var DASH_CASE_REGEXP = /-([a-z])/g;

export function camelCaseToDashCase(input: string): string {
  return StringWrapper.replaceAllMapped(input, CAMEL_CASE_REGEXP,
                                        (m) => { return '-' + m[1].toLowerCase(); });
}

export function dashCaseToCamelCase(input: string): string {
  return StringWrapper.replaceAllMapped(input, DASH_CASE_REGEXP,
                                        (m) => { return m[1].toUpperCase(); });
}