util: limit inspect to only show own properties

[BridgeAR]

Error's cause and errors properties would be visible even if these were not own properties. This is changed to align with all other parts of the inspect handling.

As drive-by I changed an array to a set for faster lookup in assert.

Fixes: #60717
Closes: #60724

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.51%. Comparing base (14f02fc) to head (eee56d6).
⚠️ Report is 34 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #61032      +/-   ##
==========================================
- Coverage   88.52%   88.51%   -0.01%     
==========================================
  Files         703      703              
  Lines      208538   208546       +8     
  Branches    40214    40219       +5     
==========================================
- Hits       184615   184604      -11     
- Misses      15921    15968      +47     
+ Partials     8002     7974      -28     

Files with missing lines	Coverage Δ
lib/internal/util/inspect.js	99.63% <100.00%> (ø)

... and 42 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/70523/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/70539/

[nodejs-github-bot]

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- Loading data for nodejs/node/pull/61032
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----------------------------------- PR info ------------------------------------
Title      util: limit inspect to only show own properties (#61032)
Author     Ruben Bridgewater <ruben@bridgewater.de> (@BridgeAR)
Branch     BridgeAR:BridgeAR/2025-12-12-only-inspect-own-properties -> nodejs:main
Labels     assert, util, console, author ready, needs-ci, commit-queue-squash
Commits    2
 - util: limit inspect to only show own properties
 - fixup!
Committers 1
 - Ruben Bridgewater <ruben.bridgewater@datadoghq.com>
PR-URL: https://github.com/nodejs/node/pull/61032
Fixes: https://github.com/nodejs/node/issues/60717
Fixes: https://github.com/nodejs/node/pull/60724
Reviewed-By: Jordan Harband <ljharb@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
------------------------------ Generated metadata ------------------------------
PR-URL: https://github.com/nodejs/node/pull/61032
Fixes: https://github.com/nodejs/node/issues/60717
Fixes: https://github.com/nodejs/node/pull/60724
Reviewed-By: Jordan Harband <ljharb@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
--------------------------------------------------------------------------------
   ℹ  This PR was created on Fri, 12 Dec 2025 13:25:23 GMT
   ✔  Approvals: 2
   ✔  - Jordan Harband (@ljharb): https://github.com/nodejs/node/pull/61032#pullrequestreview-3586247028
   ✔  - Antoine du Hamel (@aduh95) (TSC): https://github.com/nodejs/node/pull/61032#pullrequestreview-3580403058
   ✔  Last GitHub CI successful
   ℹ  Last Full PR CI on 2025-12-20T01:37:30Z: https://ci.nodejs.org/job/node-test-pull-request/70539/
- Querying data for job/node-test-pull-request/70539/
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--------------------------------------------------------------------------------
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   ✔  No git am in progress
   ✔  No git rebase in progress
--------------------------------------------------------------------------------
- Bringing origin/main up to date...
From https://github.com/nodejs/node
 * branch                  main       -> FETCH_HEAD
✔  origin/main is now up-to-date
- Downloading patch for 61032
From https://github.com/nodejs/node
 * branch                  refs/pull/61032/merge -> FETCH_HEAD
✔  Fetched commits as d7e4108bc1be..eee56d642aee
--------------------------------------------------------------------------------
Auto-merging lib/internal/util/inspect.js
[main 04e7a6fb99] util: limit inspect to only show own properties
 Author: Ruben Bridgewater <ruben.bridgewater@datadoghq.com>
 Date: Fri Dec 12 13:24:26 2025 +0100
 3 files changed, 50 insertions(+), 2 deletions(-)
[main fe73d78442] fixup!
 Author: Ruben Bridgewater <ruben.bridgewater@datadoghq.com>
 Date: Mon Dec 15 22:58:30 2025 +0100
 1 file changed, 1 deletion(-)
   ✔  Patches applied
There are 2 commits in the PR. Attempting to fixup everything into first commit.
[main f01508c6bd] util: limit inspect to only show own properties
 Author: Ruben Bridgewater <ruben.bridgewater@datadoghq.com>
 Date: Fri Dec 12 13:24:26 2025 +0100
 2 files changed, 49 insertions(+), 2 deletions(-)
   ⚠  Found Fixes: https://github.com/nodejs/node/issues/60717, skipping..
--------------------------------- New Message ----------------------------------
util: limit inspect to only show own properties
Error's cause and errors properties would be visible even if these

were not own properties. This is changed to align with all other

parts of the inspect handling.
Fixes: #60717

Closes: #60724

PR-URL: #61032

Fixes: #60724

Reviewed-By: Jordan Harband <ljharb@gmail.com>

Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
[main 25cb62cb7f] util: limit inspect to only show own properties

Author: Ruben Bridgewater <ruben.bridgewater@datadoghq.com>

Date: Fri Dec 12 13:24:26 2025 +0100

2 files changed, 49 insertions(+), 2 deletions(-)

✖  25cb62cb7f70471de9b01664032e318b8458de94

✔  0:0      no Co-authored-by metadata                co-authored-by-is-trailer

✔  5:7      Valid fixes URL.                          fixes-url

✖  8:7      Pull request URL must reference a comment or discussion. fixes-url

✔  0:0      blank line after title                    line-after-title

✔  0:0      line-lengths are valid                    line-length

✔  0:0      metadata is at end of message             metadata-end

✔  7:8      PR-URL is valid.                          pr-url

✔  0:0      reviewers are valid                       reviewers

✔  0:0      valid subsystems                          subsystem

✔  0:0      Title is formatted correctly.             title-format

✔  0:0      Title is <= 50 columns.                   title-length
ℹ  Please fix the commit message and try again.

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https://github.com/nodejs/node/actions/runs/20430516616

[aduh95]

Landed in 26b7fd2