text: var test = require('tape');
  var concat = require('concat-stream');
  var staticModule = require('../');
  var fs = require('fs');
  var path = require('path');
  
  test('scope tracking', function (t) {
      t.plan(2);
      
      var sm = staticModule({
          fs: {
              readFileSync: function () { return '"read the file!"' }
          }
      });
      readStream('source.js').pipe(sm).pipe(concat(function (body) {
          Function(['T'],body)(t);
      }));
  });
  
  test('block scope', { skip: !supportsBlockScope() }, function (t) {
      t.plan(2);
      
      var sm = staticModule({
          fs: {
              readFileSync: function () { return '"read the file!"' }
          }
      });
      readStream('block.js').pipe(sm).pipe(concat(function (body) {
          Function(['T'],body)(t);
      }));
  });
  
  function readStream (file) {
      return fs.createReadStream(path.join(__dirname, 'scope', file));
  }
  function supportsBlockScope () {
      try {
          return eval('{ let a = true; a }');
      } catch (err) {
          return false;
      }
  }
  