Removed inline source maps from image dependencies

[acburdine]

Inline source maps retain large module-source strings in the production heap even though Ghost does not use them. The image prune profile now removes final inline JSON source-map comments from deployed JavaScript dependencies, including the charset=utf-8 variant. External map references and executable content are preserved; archive pruning is unchanged.

The image report includes per-package inline-map savings, and its existing surviving-byte totals reflect the reduction. Files are replaced rather than edited in place to protect hard-linked pnpm store contents.

Validation:

• Script suite: 120 tests passed; script lint and commit hooks passed. Regression coverage includes inline/external/no maps, comment lookalikes, same-line block maps, dry runs, archive behavior, hard links, idempotence, and report JSON.
• Before/after docker build -f Dockerfile.production --target report: 197,443,071 → 193,822,237 bytes (3,620,834 bytes smaller), with 29,232 surviving files in both builds. Inline maps account for 3,623,488 removed bytes; the updated prune script accounts for the small difference. Both native-module checks passed.
• pnpm check encountered a missing local Firefox binary and two gift-preview test timeouts. Both timeout tests passed on isolated reruns.
• Dedicated-runner performance comparison completed successfully for baseline e5caf4c5ed and PR merge dea004d9ed (parents are the baseline and this PR's 50fc0322b4). Same dataset and workload, profiling disabled in both runs.

Boot metric	Baseline	PR	Change
RSS	294,817,792 bytes	282,509,312 bytes	−12,308,480 bytes (−4.17%)
boot.heap_used_bytes	145,146,552 bytes	142,863,272 bytes	−2,283,280 bytes (−1.57%)
Wall time, median of 5 boots	3,278 ms	3,191 ms	−87 ms (−2.65%)

These are observations from one paired run, not an estimate of statistical significance. Calibration was 372 → 359 ms; both runs had zero failed load requests and negligible host steal.

CI: browser E2E checks passed. Both MySQL acceptance jobs failed when Docker could not pull minio/minio (pull access denied), after the test suite completed; this is an infrastructure failure.

Mailgun remains at its existing version. The newer 14.0.1 Node bundle has no inline map, but upgrading also changes the CommonJS import contract and crosses several major versions.

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[nx-cloud]

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☁️ Nx Cloud last updated this comment at 2026-09-12 01:26:52 UTC

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.71%. Comparing base (07671c0) to head (2607c20).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #30706      +/-   ##
==========================================
+ Coverage   67.66%   67.71%   +0.04%     
==========================================
  Files        1676     1676              
  Lines       60517    60517              
  Branches    10465    10465              
==========================================
+ Hits        40950    40980      +30     
+ Misses      17249    17218      -31     
- Partials     2318     2319       +1     

Flag	Coverage Δ
e2e-tests	70.45% <ø> (+0.06%)	⬆️

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