util.types.isNativeError(value)

• value <any>

• 返回：<boolean>

  ¥Returns: <boolean>

如果值由 内置 Error 类型 的构造函数返回，则返回 true。

¥Returns true if the value was returned by the constructor of a built-in Error type.

console.log(util.types.isNativeError(new Error()));  // true
console.log(util.types.isNativeError(new TypeError()));  // true
console.log(util.types.isNativeError(new RangeError()));  // true 拷贝

原生错误类型的子类也是原生错误：

¥Subclasses of the native error types are also native errors:

class MyError extends Error {}
console.log(util.types.isNativeError(new MyError()));  // true 拷贝

作为原生错误类的 instanceof 值不等同于 isNativeError() 为该值返回 true。isNativeError() 为来自不同 realm 的错误返回 true，而 instanceof Error 为这些错误返回 false：

¥A value being instanceof a native error class is not equivalent to isNativeError() returning true for that value. isNativeError() returns true for errors which come from a different realm while instanceof Error returns false for these errors:

import { createContext, runInContext } from 'node:vm';
import { types } from 'node:util';

const context = createContext({});
const myError = runInContext('new Error()', context);
console.log(types.isNativeError(myError)); // true
console.log(myError instanceof Error); // falseconst { createContext, runInContext } = require('node:vm');
const { types } = require('node:util');

const context = createContext({});
const myError = runInContext('new Error()', context);
console.log(types.isNativeError(myError)); // true
console.log(myError instanceof Error); // false拷贝

相反，对于原生错误的构造函数未返回的所有对象，isNativeError() 返回 false。这包括 instanceof 原生错误的值：

¥Conversely, isNativeError() returns false for all objects which were not returned by the constructor of a native error. That includes values which are instanceof native errors:

const myError = { __proto__: Error.prototype };
console.log(util.types.isNativeError(myError)); // false
console.log(myError instanceof Error); // true 拷贝