/**
 * Constants for breakpoint.
 */
export class BreakpointConstants {
  /**
   * Breakpoints that represent smaller device types.
   * 最小宽度
   */
  static readonly BREAKPOINT_XS: string = 'xs';
  /**
   * Breakpoints that represent small device types.
   * 小宽度
   */
  static readonly BREAKPOINT_SM: string = 'sm';
  /**
   * Breakpoints that represent middle device types.
   * 中等宽度
   */
  static readonly BREAKPOINT_MD: string = 'md';
  /**
   * Breakpoints that represent large device types.
   * 大宽度
   */
  static readonly BREAKPOINT_LG: string = 'lg';
  /**
   * Breakpoints that represent extra-large device types.
   * 特大宽度
   */
  // static readonly BREAKPOINT_XL: string = 'xl';
  /**
   * Breakpoints that represent extra-extra-large device types.
   * 超大宽度
   */
  // static readonly BREAKPOINT_XXL: string = 'xxl';
}