text: const fs = require('fs');
  const path = require('path');
  
  [, , js, p6, mapping, jsFile, p6File, sourceMapFile] = process.argv;
  
  const nqp = require('../nqp-runtime');
  
  
  fs.writeFileSync(sourceMapFile, nqp.createSourceMap(
    fs.readFileSync(js, 'utf8'),
    fs.readFileSync(p6, 'utf8'),
    fs.readFileSync(mapping, 'utf8').split(','),
    jsFile,
    p6File,
    undefined));
  
  process.stdout.write(path.relative(path.dirname(jsFile), sourceMapFile));
  