modernizr/lib/app.build.js

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

({
  "appDir" : ".",  // take all the scripts from this dir
  "dir"    :  "build/", // and copy them to this dir, then optimize
  "baseUrl" : "src/",
  "optimize"    : "none",
  "optimizeCss" : "none",
  "paths" : {
    "test" : "../feature-detects"
  },
  modules : [
    {
    "name" : "modernizr-build",
    "include" : ["modernizr-init"],
    "create" : true
  }
  ],
  onBuildWrite: function (id, path, contents) {
    if ((/define\(.*?\{/).test(contents)) {
      //Remove AMD ceremony for use without require.js or almond.js
      contents = contents.replace(/define\(.*?\{/, '');

      contents = contents.replace(/\}\);\s*?$/,'');

      if ( !contents.match(/Modernizr\.addTest\(/) && !contents.match(/Modernizr\.addAsyncTest\(/) ) {
        //remove last return statement and trailing })
        contents = contents.replace(/return.*[^return]*$/,'');
      }
    }
    else if ((/require\([^\{]*?\{/).test(contents)) {
      contents = contents.replace(/require[^\{]+\{/, '');
      contents = contents.replace(/\}\);\s*$/,'');
    }
    return contents;
  }
});