refactor: render the benchmark page here, from published numbers - #904
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📝 WalkthroughWalkthroughThe benchmark pipeline now reads one manifest, renders the benchmark page and SVG charts locally, writes them to the repository, and removes stale charts. New configuration defines package-manager, scenario, fixture, and Node.js version metadata. ChangesBenchmark Rendering
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to This change now renders the public benchmark page and charts from an upstream JSON manifest, but invalid or missing measurements can currently publish NaN values and malformed chart output, while other manifest values are not comprehensively constrained before publication. Merge should wait for the measurement validation issue to be fixed or explicitly accepted. Sequence Diagram(s)sequenceDiagram
participant BenchmarkWorkflow
participant update-benchmarks.mjs
participant benchmarks.json
participant renderBenchmarksPage
participant RepositoryFiles
BenchmarkWorkflow->>update-benchmarks.mjs: run benchmark update
update-benchmarks.mjs->>benchmarks.json: read local or fetch remote manifest
benchmarks.json-->>update-benchmarks.mjs: return benchmark manifest
update-benchmarks.mjs->>renderBenchmarksPage: render manifest
renderBenchmarksPage-->>update-benchmarks.mjs: return markdown and SVG charts
update-benchmarks.mjs->>RepositoryFiles: write page and chart files
update-benchmarks.mjs->>RepositoryFiles: remove stale chart files
Poem
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 56.25% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 16 functions across 6 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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PR Summary by QodoRender benchmark page locally from published measurements
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Confidence Score: 5/5The PR appears safe to merge because no blocking failure remains. No blocking failure remains. Reviews (4): Last reviewed commit: "fix: validate the manifest down to the n..." | Re-trigger Greptile |
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In `@scripts/benchmarks/columns.mjs`:
- Around line 197-200: Update the alotta-files intro link in the benchmark
configuration to use descriptive link text, such as “alotta-files package.json,”
instead of “here”; ensure the generated benchmarks page reflects the same
accessible link text.
In `@scripts/benchmarks/generate-stacked-svg.mjs`:
- Line 5: Update getMax to include both v11 and v12 values when calculating the
chart scale, and ensure the corresponding limit calculation uses this expanded
maximum so v12 bars remain within the graph boundary.
In `@scripts/benchmarks/page.mjs`:
- Around line 277-292: Update assertManifest to validate every configured
measurement value before rendering, not just the existence of each results
object. For each expected result under packageManagerColumns and
nodeVersionManagerColumns, require Number.isFinite(value) and value >= 0, and
reject invalid values before any Markdown or SVG artifacts are written.
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⛔ Files ignored due to path filters (3)
static/img/benchmarks/alotta-files-pnpm.svgis excluded by!**/*.svgstatic/img/benchmarks/alotta-files.svgis excluded by!**/*.svgstatic/img/benchmarks/node-versions.svgis excluded by!**/*.svg
📒 Files selected for processing (8)
.github/workflows/benchmark.ymlscripts/benchmarks/columns.mjsscripts/benchmarks/generate-stacked-svg.mjsscripts/benchmarks/generate-svg.mjsscripts/benchmarks/page.mjsscripts/benchmarks/pretty-ms.mjsscripts/update-benchmarks.mjssrc/pages/benchmarks.md
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🧰 Additional context used
🪛 LanguageTool
src/pages/benchmarks.md
[style] ~29-~29: Consider using a synonym to be more concise.
Context: ...ll is run again, from a warm cache. ## Lots of Files The app's package.json [here](...
(A_LOT_OF)
🪛 markdownlint-cli2 (0.23.2)
src/pages/benchmarks.md
[warning] 31-31: Link text should be descriptive
(MD059, descriptive-link-text)
🔇 Additional comments (4)
scripts/benchmarks/pretty-ms.mjs (1)
1-26: LGTM!scripts/benchmarks/generate-svg.mjs (1)
1-237: LGTM!scripts/benchmarks/generate-stacked-svg.mjs (1)
1-4: LGTM!Also applies to: 6-84, 92-110
scripts/benchmarks/page.mjs (1)
1-270: LGTM!
pnpm/benchmarks used to write the page and its charts, and this script copied both across. Every wording change went through a benchmark run in a repository whose job is measurement, and what the page said about the numbers lived nowhere near the site that served it. That repository now publishes only `benchmarks.json` — the numbers, the versions they were measured with, and the conditions they were measured under. This renders the page and its charts from it: - `scripts/benchmarks/columns.mjs` — which columns the page carries, their legends, colors, row labels and explanations. - `scripts/benchmarks/page.mjs` — the prose and the table assembly. - `scripts/benchmarks/generate-svg.mjs`, `generate-stacked-svg.mjs` — moved across unchanged but for their `process.version` defaults, which a machine that measured nothing has no business reading. - `scripts/benchmarks/pretty-ms.mjs` — the sliver of `pretty-ms` the tables need. The sync runs on a bare Node.js in CI with the site's dependencies deliberately not installed, so it can't be a dependency. Yarn and Bun come off the comparison; npm and the pnpm columns stay. They are still measured upstream — the manifest carries them, this page doesn't draw them, and that is now an edit to `columns.mjs` rather than a benchmark run. The page claimed to be updated daily. The benchmark's cron is weekly, so it says weekly. Note that this sync is still `workflow_dispatch` only — the claim tracks the measurement, not the copy. Verified against the results currently recorded in pnpm/benchmarks: the npm and pnpm numbers render identically to the last published page, re-running writes nothing, and the page is byte-identical whether or not the manifest carries Yarn and Bun. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SKeHCgKWBLVERXWMdVHQFJ
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Review findings on #904. `assertManifest` checked that a `results` object existed but never looked inside it. A scenario the manifest didn't carry — a tool that failed one, a scenario renamed upstream — formatted as `NaN` in a table cell and drew a `NaN`-wide bar, which is an SVG that renders nothing. The page would have published a hole rather than failing. Every scenario the page draws is now checked to be a finite, non-negative duration before anything is written. The stacked chart scaled to pnpm 11 alone. The gray bar is normally the longer of the two, but nothing guarantees it: a scenario where pnpm 12 came out slower would have run off the right edge of the graph. It scales to both releases now. No chart changes today — pnpm 12 is faster in every scenario, so the bytes are identical. `pretty-ms.mjs` took its seconds from `ms / 1000 % 60`, which is where `pretty-ms` itself gets them and is inexact above a minute: 62400ms came back as 2.3999999999999986 and truncated to `1m 2.3s` for a duration of 62.4 seconds. Taken from the integer remainder instead. Nothing published today crosses a minute, so no number moves — but bug-compatibility with a dependency we no longer have isn't worth keeping. That last one was found by the tests rather than by reading, which is the argument for having them. `page.test.mjs` covers what reading the code doesn't show: that rendering is deterministic (the sync commits what it renders, so anything clock- or hash-order-dependent would diff every week with no measurement behind it), that each chart is referenced at the hash of its own bytes, that a manifest missing a column or carrying a non-duration is refused, and that the formatter still truncates the way the published numbers assume. Node's own runner, no dependencies — a test needing an install would test a setup the sync never has. Also gives the fixture link real text instead of "here". Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SKeHCgKWBLVERXWMdVHQFJ
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Depends on pnpm/benchmarks#67 — merge that first, since this reads
benchmarks.jsonfrom itsmain.pnpm/benchmarks used to write the benchmark page and its charts, and
scripts/update-benchmarks.mjscopied both across. Every wording change went through a benchmark run in a repository whose job is measurement, and what the page said about the numbers lived nowhere near the site that served it.That repository now publishes only
benchmarks.json— the numbers, the versions they were measured with, and the conditions they were measured under. This PR renders the page and its charts here from it:scripts/benchmarks/columns.mjs— which columns the page carries, their legends, colors, row labels and explanations. This is where a package manager is added to or dropped from the comparison.scripts/benchmarks/page.mjs— the prose and the table assembly.scripts/benchmarks/generate-svg.mjs,generate-stacked-svg.mjs— moved across unchanged, but for theirprocess.versiondefaults: a machine that measured nothing has no business reading its own Node.js version onto a chart.scripts/benchmarks/pretty-ms.mjs— the sliver ofpretty-msthe tables need. The sync workflow runs on a bare Node.js with the site's dependencies deliberately not installed, so it can't be a dependency.update-benchmarks.mjsnow fetches one JSON file and renders, rather than resolving a commit and copying a page plus every chart it references. TheGITHUB_TOKENit needed for the API goes away with it.Yarn and Bun
Off the page; npm and the pnpm columns stay. They are still measured upstream and still in the manifest — the split means dropping them from the site costs nothing upstream, and picking them back up is an edit to
columns.mjs.The manifest deliberately carries more than the page draws, so
columns.mjssays so: a tool with numbers but no column is expected, not an oversight. The reverse is checked and fails loudly — a column can't outlive its measurement.Verification
Rendered against the results currently recorded in pnpm/benchmarks: the npm and pnpm numbers come out identical to the last published page, the charts render with the two bar groups, a second run writes nothing, and the output is byte-identical whether or not the manifest carries Yarn and Bun.
One thing to look at
The page claimed to be updated daily. The benchmark's cron is weekly, so it now says weekly. This sync workflow is still
workflow_dispatchonly — if the page should update on its own, that workflow needs a schedule.🤖 Generated with Claude Code
https://claude.ai/code/session_01SKeHCgKWBLVERXWMdVHQFJ