Method _findNearestBundleHost

lib/models/host-info-cache.js:64–91

* Given a path (calculated as part of `getHostAddonInfo`), return the correct * "bundle host". A bundle host is considered the project or lazy engine. * * For example, given the following package structure: * * --Project-- * / \ * / \ * Lazy Engine

(paths, pkgInfoForLazyEngine)

   * @private
   */
  _findNearestBundleHost(paths, pkgInfoForLazyEngine) {
    // building an engine in isolation (it's considered the project, but it's
    // also added as a dependency to the project by `ember-cli`)
    if (this.project._packageInfo === pkgInfoForLazyEngine) {
      return [this.project._packageInfo, [this.project._packageInfo]];
    }

    const shortestPath = paths.reduce(
      (acc, pathToLazyEngine) => Math.min(acc, pathToLazyEngine.length),
      Number.POSITIVE_INFINITY
    );

    const pathsEqualToShortest = paths.filter((pathToLazyEngine) => pathToLazyEngine.length === shortestPath);
    const [firstPath] = pathsEqualToShortest;

    for (let i = firstPath.length - 1; i >= 0; i--) {
      const pkgInfo = firstPath[i];

      if (pkgInfo.isForBundleHost() && allPkgInfosEqualAtIndex(pathsEqualToShortest, i)) {
        return [pkgInfo, firstPath.slice(0, i + 1)];
      }
    }

    // this should _never_ be triggered
    throw new Error(
      `[ember-cli] Could not find a common host for: \`${pkgInfoForLazyEngine.name}\` (located at \`${pkgInfoForLazyEngine.realPath}\`)`
    );
  }

  /**
   * Returns a `Set` of package-info objects that a given bundle host is