nsn-util/es/NType.js

NSN工具辅助组件

import { Component } from 'react';

var isNumber = function isNumber(item) {
  return typeof item === 'number';
};

var isBoolean = function isBoolean(item) {
  return typeof item === 'boolean';
};

var isString = function isString(item) {
  return typeof item === 'string';
};

var isPromise = function isPromise(item) {
  return item instanceof Promise;
};

var isArray = Array.isArray;

var isUndefined = function isUndefined(item) {
  return typeof item === 'undefined';
};
/** 非 undefined */


var isNotUndefined = function isNotUndefined(item) {
  return !isUndefined(item);
};

var isComponentClass = function isComponentClass(item) {
  if (!item) {
    return false;
  }

  var proto = Object.getPrototypeOf(item);

  if (proto === Component || proto === Function.prototype) {
    return true;
  }

  return isComponentClass(proto);
};

var isFunction = function isFunction(item) {
  return typeof item === 'function';
};

export { isNumber, isArray, isBoolean, isString, isPromise, isComponentClass, isUndefined, isNotUndefined, isFunction };