Index.js needs to be updated to prevent 'app.import is not a function'

[ASH-Bryan]

You can read full details of this problem here (ember-cli/ember-cli#5747) but it basically shows up when ember-cli-swiper is installed into an addon that is then hosted in an app. There can be multiple levels of this. The above issues references a fix that I think will take care of this for swiper (https://github.com/jamesleebaker/ember-truncate/commit/42d58a1bbdc48f961c91b9fb92e12f5d9e835033):

var current = this;
// If the addon has the _findHost() method (in ember-cli >= 2.7.0), we'll just
// use that.
if (typeof this._findHost === 'function') {
  app = this._findHost();
}
// Otherwise, we'll use this implementation borrowed from the _findHost()
// method in ember-cli.
// Keep iterating upward until we don't have a grandparent.
// Has to do this grandparent check because at some point we hit the project.
do {
  app = current.app || app;
} while (current.parent.parent && (current = current.parent));

[Matt-Jensen]

Sorry it's taken so long to get to this issue!

You're right that this addon doesn't support importing from an addon host, however I believe the correct ember-cli issue to reference is #3718 and the recommended fix is to replace app.import usage with Addon.import in order to prevent duplicate imports via isolated calls to app.import, mentioned in ember-cli PR: #5877.

As Addon.import is a newer feature, I think adding the import polyfill for older ember-cli versions would be ideal as well.

Any of that sound wrong @ASH-Bryan?

[ASH-Bryan]

Sounds great, thanks!