var techResolver = require('../../lib/tech-resolver'); const ext2tech = { ".styl": { module: require('path').resolve(__dirname, 'fake-styl-tech'), contentType: 'text/css' } }; // save original resolver techResolver._getTech = techResolver.getTech; // redefine techResolver.getTech = function(extension) { var tech = ext2tech[extension]; if (!tech) { // call original borschik-server tech-resolver return module.exports._getTech(extension); } return tech; }; module.exports = techResolver;