Use ephemeral port for esbuild's internal dev server#5974
Merged
fatadel merged 1 commit intofirefox-devtools:mainfrom Apr 28, 2026
Merged
Use ephemeral port for esbuild's internal dev server#5974fatadel merged 1 commit intofirefox-devtools:mainfrom
fatadel merged 1 commit intofirefox-devtools:mainfrom
Conversation
Pass `port: 0` to `buildContext.serve` so esbuild binds an OS-assigned ephemeral port instead of grabbing 8000, which is commonly used by other local projects. The public port (4242 by default) is unaffected. Fixes firefox-devtools#5881
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #5974 +/- ##
==========================================
- Coverage 85.33% 85.25% -0.09%
==========================================
Files 323 317 -6
Lines 32262 31935 -327
Branches 8895 8753 -142
==========================================
- Hits 27532 27226 -306
+ Misses 4298 4277 -21
Partials 432 432 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
|
canova
approved these changes
Apr 28, 2026
Member
canova
left a comment
canova
left a comment
There was a problem hiding this comment.
Looks like an okay workaround to me. I'm not a big fan of having two servers essentially, but it looks like esbuild doesn't support having a middleware and/or ability to update/check the headers.
Contributor
Author
Yeah I did some exploration too and it seems like too much overhead for that. |
Merged
fatadel
added a commit
that referenced
this pull request
Apr 28, 2026
Changes: [Nazım Can Altınova] Add Adel to the automatic dependency reviews (#5930) [fatadel] Fix arrow panel appearing behind marker tooltips (#5926) [fatadel] Upgrade Node.js from v22 to v24 (#5923) [Markus Stange] Use createStackTableBySkippingDiscarded in focusSelf. (#5916) [Markus Stange] Propagate isJS to symbolicated funcs (#5907) [Markus Stange] Always render the CPU-usage-aware activity graph when CPU information is available (#5918) [Nazım Can Altınova] Fallback to javascript highlighting in the source view as a backup (#5936) [Nazım Can Altınova] Properly type the return value of _languageExtForPath (#5937) [Nazım Can Altınova] Update typescript eslint dependencies (#5938) [Markus Stange] Modernize more of the transform functions (#5934) [Paul Adenot] Fix extractGeckoLogs for structured Log marker format (bug 2022540) (#5927) [Nazım Can Altınova] Move some profile fetching code into a separate module. (#5939) [Markus Stange] Update the hovered item when panning any viewport canvas (#5903) [Markus Stange] Migrate Home page animation to CSS transitions and remove react-transition-group (#5649) [Nazım Can Altınova] Fix test/lint commands on Windows and fix CI (#5947) [Nazım Can Altınova] Convert profile-logic/js-tracer.tsx to a ts file (#5942) [Markus Stange] Remove panelLayoutGeneration (#5946) [fatadel] Add CounterDisplayConfig to counters in the processed profile format (#5912) [Nazım Can Altınova] Fix eslint-config-prettier silently overriding custom rules (#5955) [fatadel] Dim non-matching nodes in the stack chart when searching (#5935) [Nazım Can Altınova] Fix loading .json.gz profiles from inside zip archives (#5959) [Ryan Hunt] Add a fullscreen button to the bottom box (#5605) [Markus Stange] Speed up _computeCallNodeTableHierarchy by keeping siblings ordered by func (#5964) [Markus Stange] Replace symbolicator-cli with a profiler-edit node tool (#5965) [Nazım Can Altınova] Add "Include idle samples" toggle to the call tree settings (#5968) [Nazım Can Altınova] Add dark mode versions of the fullscreen icons (#5972) [fatadel] Replace 4 counter track components with a single generic TrackCounter (#5944) [fatadel] Use ephemeral port for esbuild's internal dev server (#5974) [carverdamien] Remove category from LongTaskMarkerPayload (#5975) And special thanks to our localizers: de: Ger de: Michael Köhler el: Jim Spentzos en-GB: Ian Neal es-CL: ravmn fr: Théo Chevalier ia: Melo46 it: Francesco Lodolo [:flod] nl: Mark Heijl pt-BR: Marcelo Ghelman ru: Valery Ledovskoy ru: berry sv-SE: Andreas Pettersson tr: Grk zh-CN: Olvcpr423 zh-CN: wxie zh-TW: Pin-guang Chen
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Pass
port: 0tobuildContext.serveso esbuild binds an OS-assigned ephemeral port instead of grabbing 8000, which is commonly used by other local projects. The public port (4242 by default) is unaffected.Fixes #5881