正在获取“at Error(native)”而不是实际节点。js堆栈跟踪,尽管使用了err.stack

在io中使用以下示例代码。js 3.2.0 64位,并使用 node example.js

'use strict';

const fs = require('fs');

fs.readdir('I_DONT_EXIST', function (/**Error*/ err, /**string[]*/ files) {
    if (err) {
        console.log(err.stack);
    }
});

我明白了

{ [Error: ENOENT: no such file or directory, scandir '...\I_DONT_EXIST']
  errno: -4058,
  code: 'ENOENT',
  syscall: 'scandir',
  path: '...\\I_DONT_EXIST' }
Error: ENOENT: no such file or directory, scandir '...\I_DONT_EXIST'
    at Error (native)

所以我得到 at Error (native) 而不是实际的错误跟踪,即使我要求 err.stack .

这不应该是实际的堆栈跟踪吗?

编辑:

下面是一小段代码,它展示了我对下面答案的最后一条(第三条)评论。

'use strict';

const fs = require('fs');

fs.readdir('I_DONT_EXIST', function (/**Error*/ err, /**string[]*/ files) {
    if (err) {
        console.log('\n== 1) Original error');
        console.log(JSON.stringify(err, Reflect.ownKeys(err), 4));
        console.log('\n== 2) Original error "stack" property');
        console.log(err.stack);

        const e = new Error(err);
        // Copy parameters I'm interested in from the original object
        e.code = err.code;

        console.log('\n\n== 3) New error');
        console.log(JSON.stringify(e, Reflect.ownKeys(e), 4));
        console.log('\n== 4) New error "stack" property');
        console.log(e.stack);

        console.log('\n\n== 5) Throw the error');
        throw e;
    }
});

我得到的输出显示,当我检查原始错误对象时,我甚至没有得到错误最终发生的文件位置,但在新的错误对象中得到了一个

== 1) Original error
{
    "stack": "Error: ENOENT: no such file or directory, scandir 'C:\\Users\\xxx\\I_DONT_EXIST'",
    "message": "ENOENT: no such file or directory, scandir 'C:\\Users\\xxx\\I_DONT_EXIST'",
    "errno": -4058,
    "code": "ENOENT",
    "syscall": "scandir",
    "path": "C:\\Users\\xxx\\I_DONT_EXIST"
}

== 2) Original error "stack" property
Error: ENOENT: no such file or directory, scandir 'C:\Users\xxx\I_DONT_EXIST'


== 3) New error
{
    "stack": "Error: Error: ENOENT: no such file or directory, scandir 'C:\\Users\\xxx\\I_DONT_EXIST'\n    at C:\\Users\\xxx\\test.js:11:19",
    "message": "Error: ENOENT: no such file or directory, scandir 'C:\\Users\\xxx\\I_DONT_EXIST'",
    "code": "ENOENT"
}

== 4) New error "stack" property
Error: Error: ENOENT: no such file or directory, scandir 'C:\Users\xxx\I_DONT_EXIST'
    at C:\Users\xxx\test.js:11:19


== 5) Throw the error
C:\Users\xxx\test.js:20
        throw e;
        ^

Error: Error: ENOENT: no such file or directory, scandir 'C:\Users\xxx\I_DONT_EXIST'
    at C:\Users\xxx\test.js:11:19