> For the complete documentation index, see [llms.txt](https://hanfak.gitbook.io/workspace/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hanfak.gitbook.io/workspace/general-paradigms/projects/rewriting.md). # Rewriting ## Why * Too hard to work with current * To make changes * Too long to fix bugs or add features * Severe issues which cannot be fixed * Influential people wnating to use new technology ## Patterns * Strangler ## Costs * Something that works, is battle tested, a new app is not and issues/bugs will occur * The cost of creating it * Always some issue that affects the new project which did not affect the old * other users cannot change * The cost of testing current functionality * The cost of maintaining two code bases * Always catch up * The current app will have logic which may not be documeneted (test/docs) which may be forgotten in new app * Takes more time than you think ## Links * *