How to get grunt-newer to compile parent jade templates that include modified templates

Gruntfile.js

grunt.initConfig({
    // ... 
    
    newer: {
      options: {
        override: function (detail, include) {
          if (detail.task === 'jade') {
            checkForNewerImports(detail.path, detail.time, include);
          } else {
            include(false);
          }
        }
      }
    },

    watch: {
      jade: {
        files: ['<%= yeoman.app %>/**/*.jade'],
        tasks: ['newer:jade']
      },
      
      // ...
    },
    
    // ...
});

// ...

var fs = require('fs');
var path = require('path');

function checkForNewerImports(jadeFile, mTime, include) {
  fs.readFile(jadeFile, 'utf8', function (err, data) {
    var jadeDir = path.dirname(jadeFile),
        // be careful with this regex - specific to my project's needs - change as needed.
        regex = /include (.+)/g,
        shouldInclude = false,
        match;

    while ((match = regex.exec(data)) !== null) {
      var importFile = jadeDir + '/' + match[1] + '.jade';
      if (fs.existsSync(importFile)) {
        var stat = fs.statSync(importFile);
        if (stat.mtime > mTime) {
          shouldInclude = true;
          break;
        }
      }
    }
    include(shouldInclude);
  });
}

// ...