declare var process: any;
export const isNode = typeof process !== 'undefined' && process.versions != null && process.versions.node != null;
export const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';

/**
 * 内部默认空值检测
 * @param value 
 * @returns 
 */
function getType(val:any){
  return Object.prototype.toString.call(val).slice(8, -1).toLowerCase();
}
export function defaultCheckEmpty(value:any):boolean{
  if (value == null) return true;
  if (getType(value) === "string") return value.trim() === "";
  if (
    getType(value) === "number" || 
    getType(value) === "boolean" || 
    getType(value) === "date" ||
    getType(value) === "function" ||
    getType(value) === "regexp"
  ) return false;
  if (Array.isArray(value)) return value.length === 0;
  if (typeof value === "object") return Object.keys(value).length === 0;
  return false;
}