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fix(appium-service): ignore warnings and debugger messages in launcher#14877

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christian-bromann merged 6 commits intowebdriverio:mainfrom
mccmrunal:fix/appium-warnings-14770
Nov 29, 2025
Merged

fix(appium-service): ignore warnings and debugger messages in launcher#14877
christian-bromann merged 6 commits intowebdriverio:mainfrom
mccmrunal:fix/appium-warnings-14770

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@mccmrunal
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@mccmrunal mccmrunal commented Nov 22, 2025

Proposed changes

The Appium service currently treats all stderr output as errors, causing the service to fail when Appium outputs warnings (e.g., driver version mismatch warnings).
The fix involves modifying how stderr output is handled during Appium process startup.
Fixes #14770

Types of changes

  • Polish (an improvement for an existing feature)
  • Bugfix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • Documentation update (improvements to the project's docs)
  • Specification changes (updates to WebDriver command specifications)
  • Internal updates (everything related to internal scripts, governance documentation and CI files)

Checklist

  • I have read the CONTRIBUTING doc
  • I have added tests that prove my fix is effective or that my feature works
  • I have added the necessary documentation (if appropriate)
  • I have added proper type definitions for new commands (if appropriate)

Backport Request

//: # (The current main branch is the development branch for WebdriverIO v9. If your change should be released to the current major version of WebdriverIO (v8), please raise another PR with the same changes against the v8 branch.)

  • This change is solely for v9 and doesn't need to be back-ported
  • Back-ported PR at #XXXXX

Further comments

I also refactored the test mocks in
launcher.test.ts
to support the change from "once" to "on"
for the stderr listener, ensuring that tests accurately reflect the new behavior where multiple stderr messages might be processed.

Reviewers: @webdriverio/project-committers

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commit: c391a4c

@mccmrunal
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mccmrunal commented Nov 22, 2025

Resolved here :- #14770

@christian-bromann
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This looks good to me, mind resolving the conflict?

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@christian-bromann resolved conflicts

@mccmrunal mccmrunal closed this Nov 23, 2025
@mccmrunal mccmrunal reopened this Nov 23, 2025
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Awesome 👍

@christian-bromann christian-bromann added the PR: Bug Fix 🐛 PRs that contain bug fixes label Nov 29, 2025
@christian-bromann christian-bromann merged commit 0967e49 into webdriverio:main Nov 29, 2025
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appium server fails on warnings

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