custom loading in node

lib-blanket.js

var fs = require("fs");
var oldLoader = require.extensions['.js'];
//find current scripts
require.extensions['.js'] = function(module, filename) {
    
    if (filename.indexOf("/src/") > -1){
       
      var content = fs.readFileSync(filename, 'utf8');
      // Parse the file content and give to module.exports
      var covintro = "/* automatically generated by JSCoverage - do not edit */";
        covintro += " if (typeof _$jscoverage === 'undefined'){ _$jscoverage = {};}";
        covintro += " if (! _$jscoverage['srcScript.js']) {";
        covintro += " _$jscoverage['srcScript.js'] = [];";
        covintro += " _$jscoverage['srcScript.js'][1] = 0;";
        covintro += " _$jscoverage['srcScript.js'][2] = 0;";
        covintro += " _$jscoverage['srcScript.js'][1]++;";
        covintro += "} ";
        //not the actual source, just for simplicity sake
        covintro += " _$jscoverage['srcScript.js'].source = [\"source line1\",\"source line2\"];";
        covintro += " global._$jscoverage = _$jscoverage;";
        content = covintro + content;
        module.exports = eval(content);
    }else{
        oldLoader(module,filename);
    }
};

src-srcScript.js

module.exports = function sample(){
	
	return true;
};

test-test.js

var blanket = require("../lib/blanket"),
	assert = require("assert"),
	scrFile = require("../src/srcScript");
	

describe('easy test', function(){
  describe('simplest', function(){
    it('should return true when called', function(){
      assert.equal(scrFile(), true);
    });
  });
});