> For the complete documentation index, see [llms.txt](https://docs.aurelia.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurelia.io/developer-guides/error-messages/runtime-html/aur0655.md). # AUR0655 ## Error Message `AUR0655: Possible infinitely recursive side-effect detected in a watcher` ## Description A computed watcher re-evaluated more than 100 times without reaching a stable value. A common cause is a watcher callback that assigns a new value to one of its own dependencies on every run. A watched function that mutates observed state can create the same cycle. ## Solution Keep the watched function focused on reading and computing a value. Make callback updates converge to a stable state, or write to state outside the dependency chain being watched. Start with the watcher named in the stack trace. Trace the properties it reads and the properties its callback changes until the cycle becomes visible. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.aurelia.io/developer-guides/error-messages/runtime-html/aur0655.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.