Javascript新函数堆栈跟踪行号减少2

内代码的Javascript堆栈跟踪行号 new Function 2点前下班:

const fn = new Function(` // line 1
  try {                   // line 2
    blah                  // line 3
  } catch(e) {            // line 4
    return e.stack        // line 5
  }                       // line 6
`)

console.log(fn())

运行上述代码段会产生:

anonymous@https://stacksnippets.net/js line 12 > Function:5:5

应该说在哪里 Function:3:5 .在节点中运行时也是这样:

$ cat stack-trace-line-nums.js 
const fn = new Function(` // line 1
  try {                   // line 2
    blah                  // line 3
  } catch(e) {            // line 4
    return e.stack        // line 5
  }                       // line 6
`)

console.log(fn())
$ node stack-trace-line-nums.js 
ReferenceError: blah is not defined
    at eval (eval at <anonymous> (/tmp/stack-trace-line-nums.js:1:12), <anonymous>:5:5)
    ...

最明显的演示方式是将所有代码放在同一行:

const fn = new Function('try { blah } catch(e) { return e.stack }')

console.log(fn())

它产生:

anonymous@https://stacksnippets.net/js line 12 > Function:3:7

而不是 Function:1:7 .

知道原因是什么或者有没有解决办法?