v9.0.1-canary.2

Patches

• Title may be omitted: #7865
• Update typescript examples: #7867
• Remove with-styled-components Auto Prerendering warning: #7871
• Add default values for runtime config: #7847
• Add a dev2 command: 70b8bed
• Handle empty directory: #7876
• Test for <Document> fragment styles: #7875
• Fix placeholder values being added when exporting from serverless: #7883
• Stop PageConfig plugin from running on non-pages: #7884
• exportPathMap dynamic routes params fix: #7846
• Add declaration files to the contributing guide: #7885
• Add support for legacy server npm modules: #7898
• Improve exported router types: #7853
• Adding a note about babelrc: #7897
• Export types for link props: #7905

Credits

Huge thanks to @lfades, @timReynolds, @ijjk, @timneutkens, @huv1k, and @aequasi for helping!