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

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mstange wants to merge 5 commits intofirefox-devtools:mainfrom
mstange:pq-cli-wip
Draft

Experiment with a command-line tool for querying profile contents#5663
mstange wants to merge 5 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/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.

mstange and others added 5 commits February 23, 2026 14:03
This logic can be useful independently of redux actions, for CLI scripts
which want to support profiler URLs.
A `yarn test:cli` script was added to run only the cli tests, but it
looks like the main tests are also running them since they match the
testMatch glob.
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codecov bot commented Feb 23, 2026

Codecov Report

❌ Patch coverage is 39.96737% with 1472 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.85%. Comparing base (37b31b0) to head (911b47b).
⚠️ Report is 2 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 16.49% 329 Missing ⚠️
src/profile-query/index.ts 39.62% 128 Missing ⚠️
src/profile-query/formatters/thread-info.ts 25.16% 113 Missing ⚠️
src/profile-query/formatters/profile-info.ts 0.00% 81 Missing ⚠️
src/profile-query/cpu-activity.ts 0.00% 71 Missing ⚠️
src/profile-query/loader.ts 0.00% 47 Missing ⚠️
src/selectors/profile.ts 14.63% 35 Missing ⚠️
src/utils/profile-fetch.ts 69.09% 34 Missing ⚠️
src/profile-query/function-list.ts 90.00% 18 Missing ⚠️
... and 13 more
Additional details and impacted files
@@            Coverage Diff             @@
##             main    #5663      +/-   ##
==========================================
- Coverage   85.56%   82.85%   -2.72%     
==========================================
  Files         319      329      +10     
  Lines       31420    33541    +2121     
  Branches     8661     9211     +550     
==========================================
+ Hits        26885    27790     +905     
- Misses       4104     5324    +1220     
+ Partials      431      427       -4     

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2 participants