crappy component template colocation polyfill

index.js

'use strict';

let path = require('path');
let Funnel = require('broccoli-funnel');

module.exports = {
  name: require('./package').name,

  preprocessTree(type, tree) {
    if (type === 'template') {
      let addon = this;
      let funnel = new Funnel(tree, {
        getDestinationPath(relativePath) {
          if (path.extname(relativePath) === '.hbs') {
            // It is safe to assume the path will always have at least two segments:
            // [ <appName>, ..., <fileName> ]
            let pathParts = relativePath.split(path.sep);
            if (pathParts[1] === 'components') {
              pathParts.splice(1, 0, 'templates');
              let classicPath = pathParts.join(path.sep);

              if (funnel.input.existsSync(classicPath)) {
                addon.ui.writeError(
                  `[${addon.name}] A colocated component template (${relativePath}) conflicts with a classic component template (${classicPath}).`
                );
              } else {
                return classicPath;
              }
            }
          }

          return relativePath;
        }
      });

      return funnel;
    } else {
      return tree;
    }
  }
};