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Node.js Method

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  • Last Updated : 08 Mar, 2021
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The method writes a diagnostic report to a file. If filename is not provided, the default filename includes the date, time, PID, and a sequence number. The report’s JavaScript stack trace is taken from err, if present.

Syntax:[filename][, err])

Parameters: This method accepts two parameters as mentioned above and described below:

  • filename: This parameter holds the file name where the report will be written.
  • err: This parameter used for reporting the javascript stack.

Return Value: This method returns the filename of the generated report.

Below examples illustrate the use of the property in Node.js:



// Node.js program to demonstrate the 
// Property 
// Include process module 
import process from 'process'
// Printing property value;

Command to run:

node filename


Note: The above program will compile and run by using the node filename.js command.


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