Notice
An update on what happened with v3.3.0 and v3.3.1. While we have retained CJS support, the migration to ESM has changed the acceptable ways to import SVGO, in ways that users depended on before. This effectively made SVGO v3 a breaking change.
Rather than resolve or workaround these differences, we've opted to release SVGO v3.3.2, which is effectively a revert to v3.2.0, and deprecate versions v3.3.0 and v3.3.1. We'll then proceed to work on releasing v4 which will document the breaking changes, and feature further breaking changes that were slated for v4, like disabling removeViewBox by default.
Before the v4.0.0 release, I'll put more focus on testing and use release candidates, just to make the release go smoothly! 👍🏽
Sorry for the headache, and thanks for your patience.