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Experiment with a command-line tool for querying profile contents#5663

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mstange wants to merge 13 commits intofirefox-devtools:mainfrom
mstange:pq-cli-wip
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Experiment with a command-line tool for querying profile contents#5663
mstange wants to merge 13 commits intofirefox-devtools:mainfrom
mstange:pq-cli-wip

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@mstange
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@mstange mstange commented Nov 6, 2025

Sometimes I've wanted to inspect profiles from the command line, without loading them in the web UI.

Here's an experiment I've been working on, which creates a pq tool ("profile query"). To test, clone this branch and run yarn build-profile-query-cli - this creates a ./dist/pq.js artifact. Then somehow make it accessible via your path, for example by putting a shell script with the contents node ~/code/profiler/src/profile-query-cli/dist/pq.js "$@" into a bin directory in your path.

pq load 'https://share.firefox.dev/hash' or pq load profile.json.gz start a session.

Only tested on macOS so far. It uses unix domain sockets so it probably doesn't work on Windows atm.

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codecov bot commented Feb 23, 2026

Codecov Report

❌ Patch coverage is 38.75701% with 1419 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.83%. Comparing base (46e3594) to head (1566123).
⚠️ Report is 3 commits behind head on main.

Files with missing lines Patch % Lines
src/profile-query/formatters/marker-info.ts 4.65% 533 Missing ⚠️
src/profile-query-cli/formatters.ts 16.41% 331 Missing ⚠️
src/profile-query/index.ts 39.43% 129 Missing ⚠️
src/profile-query/formatters/thread-info.ts 25.16% 113 Missing ⚠️
src/profile-query/cpu-activity.ts 0.00% 71 Missing ⚠️
src/profile-query/formatters/profile-info.ts 0.00% 57 Missing ⚠️
src/profile-query/loader.ts 0.00% 47 Missing ⚠️
src/selectors/profile.ts 14.63% 35 Missing ⚠️
src/profile-query/function-list.ts 90.00% 18 Missing ⚠️
src/profile-query/formatters/call-tree.ts 86.71% 17 Missing ⚠️
... and 10 more
Additional details and impacted files
@@            Coverage Diff             @@
##             main    #5663      +/-   ##
==========================================
- Coverage   85.45%   82.83%   -2.63%     
==========================================
  Files         321      331      +10     
  Lines       32068    34180    +2112     
  Branches     8745     9387     +642     
==========================================
+ Hits        27403    28312     +909     
- Misses       4234     5441    +1207     
+ Partials      431      427       -4     

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2 participants