menduner/src/utils/is.js

// copy to vben-admin

const toString = Object.prototype.toString

export const is = (val, type) => {
  return toString.call(val) === `[object ${type}]`
}

export const isDef = (val) => {
  return typeof val !== 'undefined'
}

export const isUnDef = (val) => {
  return !isDef(val)
}

export const isObject = (val) => {
  return val !== null && is(val, 'Object')
}

export const isEmpty1 = (value) => {
  if (value === '' || value === undefined || value === null){
    return true;
  }

  if (isArray(value)) {
    return value.length === 0;
  }

  if (isObject(value)) {
    return Object.keys(value).length === 0;
  }

  return false
}

export const isEmpty = (val) => {
  if (val === null) {
    return true
  }
  if (isArray(val) || isString(val)) {
    return val.length === 0
  }

  if (val instanceof Map || val instanceof Set) {
    return val.size === 0
  }

  if (isObject(val)) {
    return Object.keys(val).length === 0
  }

  return false
}

export const isDate = (val) => {
  return is(val, 'Date')
}

export const isNull = (val) => {
  return val === null
}

export const isNullAndUnDef = (val) => {
  return isUnDef(val) && isNull(val)
}

export const isNullOrUnDef = (val) => {
  return isUnDef(val) || isNull(val)
}

export const isNumber = (val) => {
  return is(val, 'Number')
}

export const isPromise = (val) => {
  return is(val, 'Promise') && isObject(val) && isFunction(val.then) && isFunction(val.catch)
}

export const isString = (val) => {
  return is(val, 'String')
}

export const isFunction = (val) => {
  return typeof val === 'function'
}

export const isBoolean = (val) => {
  return is(val, 'Boolean')
}

export const isRegExp = (val) => {
  return is(val, 'RegExp')
}

export const isArray = (val) => {
  return val && Array.isArray(val)
}

export const isWindow = (val) => {
  return typeof window !== 'undefined' && is(val, 'Window')
}

export const isElement = (val) => {
  return isObject(val) && !!val.tagName
}

export const isMap = (val) => {
  return is(val, 'Map')
}

export const isServer = typeof window === 'undefined'

export const isClient = !isServer

// export const isUrl = (path) => {
//   const reg =
//     /(((^https?:(?:\/\/)?)(?:[-:&=\+\$,\w]+@)?[A-Za-z0-9.-]+(?::\d+)?|(?:www.|[-:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&%@.\w_]*)#?(?:[\w]*))?)$/
//   return reg.test(path)
// }

export const isDark = () => {
  return window.matchMedia('(prefers-color-scheme: dark)').matches
}

// 是否是图片链接
export const isImgPath = (path) => {
  return /(https?:\/\/|data:image\/).*?\.(png|jpg|jpeg|gif|svg|webp|ico)/gi.test(path)
}

export const isEmptyVal = (val) => {
  return val === '' || val === null || val === undefined
}