Diagnose XS engine value-stack overflows by classifying import-time width versus runtime recursion depth.
npx skills add https://github.com/kriscendobot/garden --skill xs-debugging
Please help me install this Agent Skill. Skill: xs-debugging Source: https://github.com/kriscendobot/garden/tree/main/skills/xs-debugging Command: npx skills add https://github.com/kriscendobot/garden --skill xs-debugging
This skill addresses XS value-stack exhaustion, a common failure mode in Agoric and Endo environments where memory limits are hit during module evaluation or deep recursion.
Use the xs-debugging skill to analyze the latest stack overflow signal and determine if a targeted code rewrite is required.
High-intent search queries and answers about installing and using this skill.
XS engine value-stack overflow during module evaluation in Agoric typically occurs when import-time stack width exceeds memory limits. This skill classifies the crash signal to distinguish between import-time width issues and runtime recursion depth to pinpoint the cause.
To diagnose XS stack exhaustion in Endojs environments, you need systematic trace analysis that interleaves C-stack traces with symbolicated JavaScript frames. This methodology pinpoints the exact line of code causing the value-stack overflow.
Stack width refers to import-time memory consumption during module evaluation, while call-depth relates to runtime recursion limits. Distinguishing between these two failure modes is essential for applying the correct remediation strategy to resolve stack exhaustion.
The best way to resolve array-heavy stack overflows in JavaScript on the XS engine is targeted code refactoring, such as replacing flatMap operations with loops. This reduces call-depth pressure and maintains engine stability without requiring systemic configuration changes.
You should increase stackCount as a systemic configuration change when targeted code refactoring cannot resolve the stack overflow. This skill provides a decision framework to help choose between code rewrites and configuration adjustments based on the specific overflow signal.
This debugging approach specifically applies to XS engine environments like Agoric-sdk and Endojs where memory constraints trigger stack exhaustion. It focuses on resolving value-stack overflows unique to these JavaScript runtime environments.
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