log4js-node/log4js-node

Custom appender support for ESM project

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#1122 opened on Jan 11, 2022

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 (9 comments) (2 reactions) (0 assignees)JavaScript (5,721 stars) (787 forks)batch import
enhancementhelp wanted

Description

Hi, I am migrating a project from CommonJS to pure ESM. Is it possible to load a custom appender at this time using pure ESM?

Contributor guide

Tech stack
javascriptnodejs
Domain
backenddeveloper experience
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.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
Node.js ESMlog4js configuration
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate how custom appenders are currently loaded and registered in CommonJS (likely in `lib/appenders/index.js` or similar). Determine what changes are needed to support ES module imports (e.g., dynamic `import()` instead of `require()`). Review existing comments in the issue for suggested approaches and potential pitfalls like circular dependencies or module caching. Test with a sample ESM project using a custom appender file.