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unjs / consola

🐨 Elegant Console Logger for Node.js and Browser
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100% CPU on Linux, possibly stuck in an endless loop #207

Open georgzoeller opened 1 year ago

georgzoeller commented 1 year ago

Environment

Debian Bullseye / Node 20

Reproduction

Something is happening here (potentially related to emojiregexp, not sure) that's causing 100% on linux, it looks like the function may be stuck in an endless loop.

image

If I SIGUSR the process and inspect, I see it is running a loop around here that doesn't seem to end

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Describe the bug

Specific conditions (have not been able to assertain exactly what the input string is is causing consola 3.2.2 to consume 100% CPU and make the main thread unresponsive. Stracktrace included in repro

Additional context

No response

Logs

No response

image

georgzoeller commented 1 year ago

Bit more info. I don't know the exact string that blew it up, but the input was coming from a CLIP interrogator, which usually contains strings with weights such as

(artist:0.5), (modern:-1), etc. The brackets should be balanced but may not always be

It looks to me like a regexp is misfiring causing an endless loop in consola

kikuchan commented 1 month ago

Probably it's related to #246 (because the backtrace shows stringWidth), and now it's resolved I think.