Trace nodejs scripts

add_to_index.js

// Add this to your index.js, you may want to do file $(which program) to find where 
// the package has been installed. Also, you will need to install npm install njstrace


if (process.env.TRACE || false) {
  // Generate the name of the tracefile
  let call_argument_list = process.argv.slice(2);
  call_argument_list.push(new Date().getTime());
  let trace_file_name = call_argument_list.join('-');

  // File to ouput to, more options in https://www.npmjs.com/package/njstrace
  var fileFormatter = {
    stdout: `${trace_file_name}.out`,
    inspectArgsMaxLen: 0,
    indentationChar: '\t'
  };

  var njstrace = require('njstrace').inject({
    formatter: [fileFormatter]
  });
}