Function print

lib/internal/main/print_help.js:203–232

(stream)

}

function print(stream) {
  const { options, aliases } = getCLIOptionsInfo();
  const console = require('internal/console/global');

  // Use 75 % of the available width, and at least 70 characters.
  const width = MathMax(70, (stream.columns || 0) * 0.75);
  const firstColumn = MathFloor(width * 0.4);
  const secondColumn = MathFloor(width * 0.57);

  options.set('-', { helpText: 'script read from stdin ' +
                               '(default if no file name is provided, ' +
                               'interactive mode if a tty)' });
  options.set('--', { helpText: 'indicate the end of node options' });
  let helpText = (
    'Usage: node [options] [ script.js ] [arguments]\n' +
    '       node inspect [options] [ script.js | host:port ] [arguments]\n\n' +
    'Options:\n');
  helpText += (indent(format({
    options, aliases, firstColumn, secondColumn,
  }), 2));

  helpText += ('\nEnvironment variables:\n');

  helpText += (format({
    options: envVars, firstColumn, secondColumn,
  }));

  helpText += ('\nDocumentation can be found at https://nodejs.org/');
  console.log(helpText);
}

prepareMainThreadExecution();