We've been struggling with providing package that works for various bundlers and node. v3.5.8 was expected to solve the issue with node, but it turned out having an issue with webpack 5. We basically gave up supporting old bundlers. v3.5.9 comes with simplified builds with latest standard.

Note for old bundlers like webpack 4: Unlike previous versions, the bundler will pick cjs build by default. If you need module build, it should be explicit. Free free to open an issue for questions and discussions.

• #537 Package all files into a single dist folder