// {app_root}/config/plugin.js
exports.swig = {
  enable: true,
  package: 'egg-view-swig',
};

// {app_root}/config/config.default.js
exports.view = {
  defaultViewEngine: 'swig',
  mapping: {
    '.tpl': 'swig',
  },
};

// {app_root}/config/config.default.js
exports.swig = {
  cache: true,
};

// {app_root}/app/extend/filter.js
exports.hello = name => `hi, ${name}.`;   

// {app_root}/app/controller/{your_controller}.js
exports.home = function* (ctx) {
  yield ctx.render('home.tpl', { name: 'egg' });
};

// home.tpl
{{ name | hello }}

// {app_root}/app/controller/test.js
exports.home = function* (ctx) {
  yield ctx.render('home.tpl', { name: 'swig view' });
};