y-common-utils/src/common/utils/is/index.ts

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export const index = (data: unknown) => Object.prototype.toString.call(data);

export const _is = <T>(type: string) => {
  return (data: unknown): data is T => {
    return Object.prototype.toString.call(data) === type;
  };
};

export const isString = _is<string>("[object String]");

export const isArray = <T = any>() => _is<Array<T>>("[object Array]");

export const isObject = _is<Object>("[object Object]");

export const isNumber = _is<number>("[object Number]");

export const isBoolean = _is<boolean>("[object Boolean]");

export const isNull = _is<null>("[object Null]");

export const isUndefined = _is<undefined>("[object Undefined]");

export const isSymbol = _is<symbol>("[object Symbol]");

export const isDate = _is<Date>("[object Date]");

export const isFunction = _is<Function>("[object Function]");

export const isRegExp = _is<RegExp>("[object RegExp]");

export const isError = _is<Error>("[object Error]");

export const isPromise = <T = any>() => _is<Promise<T>>("[object Promise]");

export const isSet = <T = any>() => _is<Set<T>>("[object Set]");

export const isMap = <T = any, K = any>() => _is<Map<T, K>>("[object Map]");

export const isNil = (data: unknown): data is null | undefined => isNull(data) || isUndefined(data);

export const isEmpty = (data: unknown): boolean => {
  if (data == null) return true;
  if (typeof data === "boolean") return false;
  if (typeof data === "number") return !data;
  if (data instanceof Error) return data.message === "";

  switch (index(data)) {
    case "[object String]":
    case "[object Array]": {
      return !(data as any).length;
    }
    case "[object Set]":
    case "[object Map]":
    case "[object File": {
      return !(data as any).size;
    }
    case "[object Object]": {
      return !Object.keys(data as object).length;
    }
  }
  return false;
};

export const isNotEmpty = (data: unknown) => !isEmpty(data);

export const generateIsBlanks = (getItem: (item: any, index: number) => any) => {
  return (...args: any[]): boolean => {
    for (let i = 0; i < args.length; i++) {
      if (isEmpty(getItem(args[i], i))) return true;
    }
    return false;
  };
};

export const generateIsAllBlanks = (getItem: (item: any, index: number) => any) => {
  return (...args: any[]): boolean => {
    for (let i = 0; i < args.length; i++) {
      if (isNotEmpty(getItem(args[i], i))) return false;
    }
    return true;
  };
};

/**
 * 只要有一个为空就返回true
 */
export const isBlanks = generateIsBlanks((item, index) => item);

/**
 * 全部都为空才返回true
 */
export const isAllBlanks = generateIsAllBlanks((item, index) => item);

export const isWX = () => window.navigator.userAgent.toLowerCase().indexOf("micromessenger") !== -1;

export const isIOS = () => /(iPhone|iPad|iPod|iOS)/i.test(window.navigator.userAgent);

export const isAndroid = () => /Android/i.test(window.navigator.userAgent);

export default () => [
  1,2,3
]