Replicate normal NodeJS error printing behavior

Question

When node encounters an caught exception, it prints the line the error occurred on, followed by the stack trace, then exits:

/example.js:1
throw new Error()
^

Error
    at ...

I would like to catch an exception, print exactly the same thing, and continue. Basically:

try {
  something();
} catch (e) {
  // what goes here?
  console.error(e);
}

Note that the above example already prints the stack trace. The missing part is the first four lines, including the file/line reference, line text, and column indicator.

Possibly duplicate of this https://stackoverflow.com/questions/2923858/how-to-print-a-stack-trace-in-node-js — Neel Rathod, Aug 27 '19 at 18:46
This is not a duplicate. That question asks how to print a stack trace. The example code in this question already prints a stack trace; the missing part is `// what goes here?`. — Thom Smith, Aug 27 '19 at 18:56

score -1 · Accepted Answer · answered Aug 27 '19 at 18:43

-1

You can use the stack property of Error:

try {
  something();
} catch (e) {
  console.err(e.stack);
}

answered Aug 27 '19 at 18:43

mgarcia

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This is functionally almost identical to the example code in the question. It does not print the entire specified output (what node prints for uncaught exceptions). – Thom Smith Aug 27 '19 at 18:58

Replicate normal NodeJS error printing behavior

1 Answers1