After installing the default latest ember-browserify (v1.2.2) on a fresh app with ember-cli 3.1.4, building yields the following warnings:
[API] Warning: The .read and .rebuild APIs will stop working in the next Broccoli version
[API] Warning: Use broccoli-plugin instead: https://github.com/broccolijs/broccoli-plugin
[API] Warning: Plugin uses .read/.rebuild API: ember-browserify
[API] Warning: Plugin uses .read/.rebuild API: ember-browserify