Problem using this addon in an Engine Addon

[dbouwman]

Still looking into why this is a problem, but using the latest Engines beta, when I use this addon from within the engine (this is not an issue in a normal addon though), including it in the dependencies list in package.json, I get the following error during the build

Livereload server on http://localhost:49153
Serving on http://localhost:4200/
The Broccoli Plugin: [SourceMapConcat: Concat: Vendor /assets/engine-vendor.js] failed with:
Error: ENOENT: no such file or directory, open '/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/tmp/source_map_concat-input_base_path-nWYI0dJZ.tmp/undefined/sanitize.js/lib/sanitize.js'
    at Error (native)
    at Object.fs.openSync (fs.js:640:18)
    at Object.fs.readFileSync (fs.js:508:33)
    at SourceMap.addFile (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/fast-sourcemap-concat/lib/source-map.js:75:31)
    at /Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/broccoli-concat/concat.js:200:16
    at Array.forEach (native)
    at Concat.<anonymous> (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/broccoli-concat/concat.js:198:24)
    at /Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/fast-sourcemap-concat/lib/source-map.js:393:12
    at initializePromise (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/rsvp/dist/rsvp.js:588:5)
    at new Promise (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/rsvp/dist/rsvp.js:1076:31)

The broccoli plugin was instantiated at:
    at Concat.Plugin (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/broccoli-plugin/index.js:7:31)
    at new Concat (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/broccoli-concat/concat.js:38:10)
    at module.exports (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/broccoli-concat/index.js:26:10)
    at Class.buildVendorJSWithImports (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/ember-engines/lib/engine-addon.js:149:7)
    at Class.treeForPublic (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/ember-engines/lib/engine-addon.js:436:59)
    at Class._treeFor (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/ember-cli/lib/models/addon.js:362:33)
    at Class.treeFor (/Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/ember-engines/lib/engine-addon.js:643:23)
    at /Users/dbouwman/dev/ember-bugs/arcgis-items-engine/node_modules/ember-cli/lib/broccoli/ember-app.js:522:20
    at Array.map (native)

I found a workaround by changing how the included hook in index.js works:

  included: function(app, parentAddon) {
    var current = this;
    do {
      app = current.app || app;
    } while (current.parent.parent && (current = current.parent));
    app.import(app.bowerDirectory + '/sanitize.js/lib/sanitize.js');
  }

Again - not vouching for this as the best way to solve the problem, just that this is working for me, and may be helpful to others.