eclipse-theia/theia

[lint][performance] detect uncollected disposables

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#8,005 opened on Jun 14, 2020

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help wantedlintingperformancequality

Description

Leaking disposables cat capture other objects and cause memory leaks, i.e. the common use case listeners leaking widget or react components. It would be good to have linting rule for such cases. One should consider that there can be use cases when it is not necessary, i.e. for services which are bound to the application lifetime.

Contributor guide

Tech stack
typescript
Domain
performancetooling
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
TypeScriptunderstanding of disposables pattern
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
Examine existing lint rules in the Eclipse Theia repository, particularly in packages related to linting or code quality. Look at how other rules detect pattern violations (e.g., unused variables). Review the issue discussion (currently empty) and consider reaching out to maintainers for clarification on scope and acceptable false positives. Investigate TypeScript compiler API for creating custom lint rules.