LinusU / LinusU/cwasm-webp

Possible memory leak in decode function?

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Dominant language
JavaScript
Stars
9
Forks
3
PR merge metrics
No merged PRs in 30d

Description

Hey,
we are using a library which depends on version 0.1.5. We noticed a heavy memory increase in our application and started debugging it via node profiler. After getting some snapshots, we noticed a big JSArrayBufferData object which contains a call to the decode function of the @cwasm/webp package. The object never gets collected by garbage collector, even when we force a cleaning via global.gc().

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Research direction

Start at the package's decode entry point and reproduce the memory growth with version 0.1.5 while inspecting profiler snapshots. Compare behavior before and after forcing global.gc(), focusing on whether JSArrayBufferData remains retained. Done means the retained buffer is collected and the memory increase is no longer observed.

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Assessment

Tech stack
javascript, node.js, wasm
Domain
backend, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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