fix: avoid starting and stopping spinner loops #7131
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ndhoule
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Mar 25, 2025
This was a small regression introduced in #7026. I didn't quite map the previous lib's API to nanospinner's correctly. The intent here is to manually control each frame render and each clear. Instead, the spinner here was already started before it's passed in to this method, then it was cleared and started again on each chunk - but `start()` here would start a new interval loop and set up new node.js exit listeners but `clear()` wouldn't clear them (`reset()` does that). This was leading to unnecessary resource utilization and printing warnings like this: ``` MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGINT listeners added to [process]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit (Use node --trace-warnings ... to show where the warning was created) (node:61086) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGTERM listeners added to [process]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit ``` The fix here is to just manually render a single frame (`.spin()`) at a time (and `stop()` the initial loop).
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Summary
This was a small regression introduced in #7026.
I didn't quite map the previous lib's API to nanospinner's correctly.
The intent here is to manually control each frame render and each clear. Instead, the spinner here was already started before it's passed in to this method, then it was cleared and started again on each chunk - but
start()here would start a new interval loop and set up new node.js exit listeners butclear()wouldn't clear them (reset()does that).This was leading to unnecessary resource utilization and printing warnings like this:
The fix here is to just manually render a single frame (
.spin()) at a time (andstop()the initial loop).