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fix: cannot find module ansis on Node.js < 14#5986

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Unitech merged 1 commit intoUnitech:developmentfrom
webdiscus:fix-ansis-node10
May 16, 2025
Merged

fix: cannot find module ansis on Node.js < 14#5986
Unitech merged 1 commit intoUnitech:developmentfrom
webdiscus:fix-ansis-node10

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@webdiscus webdiscus commented May 15, 2025 •
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Q A
Bug fix? yes
New feature? no
BC breaks? no
Deprecations? no
Tests pass? yes
Fixed tickets #5984
License MIT
Doc PR https://github.com/pm2-hive/pm2-hive.github.io/pulls

Hello @Unitech,

This PR fixes the incompatibility with Node.js <= 12 introduced with the PR #5983. I'll leave this as a draft for now.

Although PM2 v6 officially requires at least Node.js 16, many users continue to run pm2 v6 on unsupported Node.js versions 10–12.

Many other dependencies require Node.js 14+:

  • proxy-agent@6.4.0
  • agent-base@7.1.3
  • http-proxy-agent@7.0.2
  • https-proxy-agent@7.0.6
  • socks-proxy-agent@8.0.5
  • pac-proxy-agent@7.2.0
  • get-uri@6.0.4
  • data-uri-to-buffer@6.0.2
  • degenerator@5.0.1

By the way, the README should be updated to say:

All Node.js versions are supported starting Node.js 14.x.

How to reproduce the issue

The pm2 6.0.6 uses package ansis 4.0.0 (node >= 14).
Check package.json:

"dependencies": {
  ..
 "ansis": "4.0.0",
  ..
}

Run from pm2 project directory:

docker run --rm -it -v "$PWD":/app -w /app --entrypoint bash node:10 -c './bin/pm2 ls'

Output:

internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'ansis'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> (/app/constants.js:10:14)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)

How to fix this incompatibility issue

Replace ansis 4.0.0 with special version 4.0.0-node10 compatible with Node.js 10+:

"dependencies": {
 ..
- "ansis": "4.0.0",
+ "ansis": "4.0.0-node10",
 ..
}

Test pm2 with 4.0.0-node10 in Node.js 10

Run from pm2 project directory:

docker run --rm -it -v "$PWD":/app -w /app --entrypoint bash node:10 -c './bin/pm2 ls'

Output:
image

@webdiscus webdiscus mentioned this pull request May 15, 2025
Closed
@Unitech Unitech marked this pull request as ready for review May 16, 2025 09:26
@Unitech Unitech merged commit 99d9224 into Unitech:development May 16, 2025
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@webdiscus @Unitech