mirror of
https://github.com/bookorbit/bookorbit.git
synced 2026-11-03 00:11:37 -06:00
ci: add automated star history chart
Keep README growth data self-hosted and resilient when detailed GitHub stargazer history is unavailable.
This commit is contained in:
neon
@@ -0,0 +1,92 @@
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name: Star History
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on:
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workflow_dispatch:
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schedule:
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- cron: "37 6 * * *"
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push:
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branches: [main]
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paths:
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- ".github/workflows/star-history.yml"
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- "scripts/star-history/**"
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permissions: {}
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concurrency:
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group: star-history
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cancel-in-progress: false
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jobs:
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publish:
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name: Refresh chart
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if: github.repository == 'bookorbit/bookorbit'
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runs-on: ubuntu-latest
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timeout-minutes: 10
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permissions:
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contents: write
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steps:
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- name: Checkout
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uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
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- name: Set up Node.js
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uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v6
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with:
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node-version: 24
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- name: Test generator
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run: node --test scripts/star-history/generate.test.mjs
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- name: Restore accumulated series
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env:
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SERIES_PATH: ${{ runner.temp }}/star-history.json
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run: |
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if git ls-remote --exit-code --heads origin star-history >/dev/null; then
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git fetch --depth 1 origin \
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'+refs/heads/star-history:refs/remotes/origin/star-history'
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git show origin/star-history:star-history.json > "$SERIES_PATH"
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else
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cp scripts/star-history/bootstrap.json "$SERIES_PATH"
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fi
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- name: Generate chart
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env:
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GITHUB_TOKEN: ${{ github.token }}
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STAR_HISTORY_TOKEN: ${{ secrets.STAR_HISTORY_TOKEN }}
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SERIES_PATH: ${{ runner.temp }}/star-history.json
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SVG_PATH: ${{ runner.temp }}/star-history.svg
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run: |
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node scripts/star-history/generate.mjs \
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--repo "$GITHUB_REPOSITORY" \
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--series "$SERIES_PATH" \
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--bootstrap scripts/star-history/bootstrap.json \
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--out "$SVG_PATH"
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- name: Publish chart and data
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env:
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SERIES_PATH: ${{ runner.temp }}/star-history.json
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SVG_PATH: ${{ runner.temp }}/star-history.svg
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run: |
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git config user.name "github-actions[bot]"
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git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
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json_blob=$(git hash-object -w "$SERIES_PATH")
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svg_blob=$(git hash-object -w "$SVG_PATH")
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tree=$(printf '100644 blob %s\tstar-history.json\n100644 blob %s\tstar-history.svg\n' \
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"$json_blob" "$svg_blob" | git mktree)
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parent=$(git rev-parse --verify refs/remotes/origin/star-history 2>/dev/null || true)
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if [ -n "$parent" ]; then
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previous_tree=$(git rev-parse "$parent^{tree}")
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if [ "$tree" = "$previous_tree" ]; then
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echo "Star history is unchanged"
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exit 0
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fi
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commit=$(printf '%s\n' "chore: update star history" | \
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TZ=UTC git commit-tree "$tree" -p "$parent")
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else
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commit=$(printf '%s\n' "chore: initialize star history" | \
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TZ=UTC git commit-tree "$tree")
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fi
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git push origin "$commit:refs/heads/star-history"
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@@ -26,7 +26,7 @@ A self-hosted library management and reading platform for ebooks, PDFs, audioboo
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---
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---
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## What is BookOrbit?
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## What is BookOrbit?
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@@ -144,6 +144,12 @@ BookOrbit is available in English, German, Dutch, Brazilian Portuguese, and Slov
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---
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---
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## Community Growth
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[](https://github.com/bookorbit/bookorbit/stargazers)
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---
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## Support
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## Support
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- **Questions and discussion:** [GitHub Discussions](https://github.com/bookorbit/bookorbit/discussions)
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- **Questions and discussion:** [GitHub Discussions](https://github.com/bookorbit/bookorbit/discussions)
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@@ -0,0 +1,57 @@
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# Star History Chart
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BookOrbit renders its README star-history chart in the repository instead of
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depending on an external chart service.
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## Storage
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The `star-history` branch contains two generated files:
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- `star-history.json`: validated daily aggregate counts and source metadata
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- `star-history.svg`: the self-contained README chart
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The workflow creates normal commits on this branch. It does not force-push, so
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previous chart data remains recoverable without adding automated commits to
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`main`.
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The bootstrap snapshot at `scripts/star-history/bootstrap.json` contains the
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initial exact aggregate history. It is used only when the publication branch
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does not exist. Raw stargazer records and GitHub usernames are never stored.
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## Refresh behavior
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The `Star History` workflow runs daily and can also be dispatched manually.
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It restores the stored series, obtains the current repository star count,
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replaces any existing point for the current UTC date, renders the SVG, and
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publishes the JSON and SVG in one branch commit.
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The built-in workflow token is sufficient for daily snapshots. An optional
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`STAR_HISTORY_TOKEN` repository secret belonging to a collaborator enables
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exact-history refreshes from GitHub's timestamped stargazer endpoint. Exact
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refreshes replace the aggregate curve and correct any drift from previous
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snapshots. If the endpoint is unavailable, the workflow retains the stored
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history and falls back to the current count.
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The generator refuses malformed series, data for a different repository,
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future points, invalid API responses, and exact histories beyond GitHub's
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pagination limit. A failed run publishes nothing.
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## Local commands
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Run the focused test suite:
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```bash
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pnpm run test:star-history
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```
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Generate from a stored series and the current count:
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```bash
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GITHUB_TOKEN=... node scripts/star-history/generate.mjs \
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--repo bookorbit/bookorbit \
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--series star-history.json \
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--bootstrap scripts/star-history/bootstrap.json \
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--out star-history.svg
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```
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Set `STAR_HISTORY_TOKEN` as well to attempt a complete exact-history refresh.
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After Width: | Height: | Size: 4.2 MiB |
+2
-1
@@ -31,7 +31,8 @@
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"lint:fix": "pnpm --filter server lint:fix && pnpm --filter client lint:fix",
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"lint:fix": "pnpm --filter server lint:fix && pnpm --filter client lint:fix",
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"format": "pnpm --filter server format && pnpm --filter client format",
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"format": "pnpm --filter server format && pnpm --filter client format",
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"format:check": "pnpm --filter server format:check && pnpm --filter client format:check",
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"format:check": "pnpm --filter server format:check && pnpm --filter client format:check",
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"test": "pnpm run test:server && pnpm run test:client",
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"test": "pnpm run test:star-history && pnpm run test:server && pnpm run test:client",
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"test:star-history": "node --test scripts/star-history/generate.test.mjs",
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"test:server": "pnpm --filter server test",
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"test:server": "pnpm --filter server test",
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"test:client": "pnpm --filter client test:unit --run",
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"test:client": "pnpm --filter client test:unit --run",
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"e2e:run": "node ./scripts/e2e/run-suite.mjs",
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"e2e:run": "node ./scripts/e2e/run-suite.mjs",
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@@ -0,0 +1,305 @@
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{
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"schemaVersion": 1,
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"repository": "bookorbit/bookorbit",
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"updatedAt": "2026-07-27",
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"lastExactFetch": "2026-07-27",
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"source": "exact",
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"points": [
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{
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"date": "2026-05-15",
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"stars": 1
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},
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{
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"date": "2026-05-16",
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"stars": 11
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},
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{
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"date": "2026-05-17",
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"stars": 64
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},
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{
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"date": "2026-05-18",
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"stars": 86
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},
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{
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"date": "2026-05-19",
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"stars": 97
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},
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{
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"date": "2026-05-20",
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"stars": 173
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},
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{
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"date": "2026-05-21",
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"stars": 213
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},
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{
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"date": "2026-05-22",
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"stars": 243
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},
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{
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"date": "2026-05-23",
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"stars": 354
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},
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{
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"date": "2026-05-24",
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"stars": 460
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},
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{
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"date": "2026-05-25",
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"stars": 486
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},
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{
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"date": "2026-05-26",
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"stars": 501
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},
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{
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"date": "2026-05-27",
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"stars": 518
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},
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{
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"date": "2026-05-28",
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"stars": 532
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},
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{
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"date": "2026-05-29",
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"stars": 605
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},
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{
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"date": "2026-05-30",
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"stars": 624
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},
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{
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"date": "2026-05-31",
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"stars": 640
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},
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{
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"date": "2026-06-01",
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"stars": 672
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},
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{
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"date": "2026-06-02",
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"stars": 729
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},
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{
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"date": "2026-06-03",
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"stars": 761
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},
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{
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"date": "2026-06-04",
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"stars": 816
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},
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{
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"date": "2026-06-05",
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"stars": 836
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},
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{
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"date": "2026-06-06",
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"stars": 853
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},
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{
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"date": "2026-06-07",
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"stars": 866
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},
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{
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"date": "2026-06-08",
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"stars": 871
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},
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{
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"date": "2026-06-09",
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"stars": 882
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},
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{
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"date": "2026-06-10",
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"stars": 887
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},
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{
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"date": "2026-06-11",
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"stars": 897
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},
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{
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"date": "2026-06-12",
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"stars": 933
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},
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{
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"date": "2026-06-13",
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"stars": 997
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},
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{
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"date": "2026-06-14",
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"stars": 1055
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},
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{
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"date": "2026-06-15",
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"stars": 1078
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},
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{
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"date": "2026-06-16",
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"stars": 1106
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},
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{
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"date": "2026-06-17",
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"stars": 1128
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},
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{
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"date": "2026-06-18",
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"stars": 1138
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},
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{
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"date": "2026-06-19",
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"stars": 1145
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},
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{
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"date": "2026-06-20",
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"stars": 1156
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},
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{
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"date": "2026-06-21",
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"stars": 1164
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},
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{
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"date": "2026-06-22",
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"stars": 1171
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},
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{
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"date": "2026-06-23",
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"stars": 1178
|
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},
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{
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"date": "2026-06-24",
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"stars": 1189
|
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},
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{
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||||||
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"date": "2026-06-25",
|
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"stars": 1199
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},
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{
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"date": "2026-06-26",
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"stars": 1213
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},
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{
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"date": "2026-06-27",
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"stars": 1224
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},
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{
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"date": "2026-06-28",
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"stars": 1250
|
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},
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{
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"date": "2026-06-29",
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"stars": 1271
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},
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{
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"date": "2026-06-30",
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"stars": 1284
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},
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||||||
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{
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||||||
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"date": "2026-07-01",
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"stars": 1302
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},
|
||||||
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{
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"date": "2026-07-02",
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"stars": 1318
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},
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{
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"date": "2026-07-03",
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"stars": 1334
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},
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{
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"date": "2026-07-04",
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"stars": 1360
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},
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{
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"date": "2026-07-05",
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"stars": 1374
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},
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{
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"date": "2026-07-06",
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"stars": 1393
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},
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{
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"date": "2026-07-07",
|
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"stars": 1409
|
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},
|
||||||
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{
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||||||
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"date": "2026-07-08",
|
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"stars": 1422
|
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},
|
||||||
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{
|
||||||
|
"date": "2026-07-09",
|
||||||
|
"stars": 1431
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-10",
|
||||||
|
"stars": 1483
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-11",
|
||||||
|
"stars": 1504
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-12",
|
||||||
|
"stars": 1520
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-13",
|
||||||
|
"stars": 1537
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-14",
|
||||||
|
"stars": 1550
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-15",
|
||||||
|
"stars": 1563
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-16",
|
||||||
|
"stars": 1578
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-17",
|
||||||
|
"stars": 1594
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-18",
|
||||||
|
"stars": 1613
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-19",
|
||||||
|
"stars": 1626
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-20",
|
||||||
|
"stars": 1638
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-21",
|
||||||
|
"stars": 1654
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-22",
|
||||||
|
"stars": 1679
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-23",
|
||||||
|
"stars": 1694
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-24",
|
||||||
|
"stars": 1715
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-25",
|
||||||
|
"stars": 1745
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-26",
|
||||||
|
"stars": 1765
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"date": "2026-07-27",
|
||||||
|
"stars": 1768
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
@@ -0,0 +1,719 @@
|
|||||||
|
#!/usr/bin/env node
|
||||||
|
|
||||||
|
import { readFile, rename, unlink, writeFile } from "node:fs/promises";
|
||||||
|
import { resolve } from "node:path";
|
||||||
|
import { fileURLToPath } from "node:url";
|
||||||
|
|
||||||
|
const API_ROOT = "https://api.github.com";
|
||||||
|
const DEFAULT_REPOSITORY = "bookorbit/bookorbit";
|
||||||
|
const MAX_PAGES = 400;
|
||||||
|
const PER_PAGE = 100;
|
||||||
|
const REQUEST_TIMEOUT_MS = 30_000;
|
||||||
|
const MAX_RESPONSE_BYTES = 2_000_000;
|
||||||
|
|
||||||
|
const WIDTH = 680;
|
||||||
|
const HEIGHT = 380;
|
||||||
|
const PANEL_X = 18;
|
||||||
|
const PANEL_Y = 58;
|
||||||
|
const PANEL_WIDTH = 644;
|
||||||
|
const PANEL_HEIGHT = 252;
|
||||||
|
const PLOT_LEFT = 76;
|
||||||
|
const PLOT_RIGHT = 642;
|
||||||
|
const GRID_RIGHT = 646;
|
||||||
|
const PLOT_TOP = 86;
|
||||||
|
const BASELINE = 288;
|
||||||
|
const AXIS_LABEL_Y = 332;
|
||||||
|
const MAX_DATE_TICKS = 4;
|
||||||
|
const MAX_RENDERED_POINTS = 180;
|
||||||
|
|
||||||
|
export class GitHubApiError extends Error {
|
||||||
|
constructor(message, { status, url, headers }) {
|
||||||
|
super(message);
|
||||||
|
this.name = "GitHubApiError";
|
||||||
|
this.status = status;
|
||||||
|
this.url = url;
|
||||||
|
this.headers = headers;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
export class HistoryLimitError extends Error {
|
||||||
|
constructor(limit) {
|
||||||
|
super(`GitHub returned at least ${limit.toLocaleString("en-US")} stargazers, which exceeds the exact-history pagination limit`);
|
||||||
|
this.name = "HistoryLimitError";
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function parseArguments(argv) {
|
||||||
|
const options = {
|
||||||
|
repository: process.env.GITHUB_REPOSITORY || DEFAULT_REPOSITORY,
|
||||||
|
seriesPath: "star-history.json",
|
||||||
|
bootstrapPath: undefined,
|
||||||
|
outputPath: "star-history.svg",
|
||||||
|
};
|
||||||
|
|
||||||
|
for (let index = 0; index < argv.length; index += 1) {
|
||||||
|
const flag = argv[index];
|
||||||
|
const value = argv[index + 1];
|
||||||
|
|
||||||
|
if (!["--repo", "--series", "--bootstrap", "--out"].includes(flag)) {
|
||||||
|
throw new Error(`Unknown argument: ${flag}`);
|
||||||
|
}
|
||||||
|
if (!value) {
|
||||||
|
throw new Error(`Missing value for ${flag}`);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (flag === "--repo") options.repository = value;
|
||||||
|
if (flag === "--series") options.seriesPath = value;
|
||||||
|
if (flag === "--bootstrap") options.bootstrapPath = value;
|
||||||
|
if (flag === "--out") options.outputPath = value;
|
||||||
|
index += 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return options;
|
||||||
|
}
|
||||||
|
|
||||||
|
function utcToday(now = new Date()) {
|
||||||
|
return now.toISOString().slice(0, 10);
|
||||||
|
}
|
||||||
|
|
||||||
|
function isIsoDate(value) {
|
||||||
|
if (!/^\d{4}-\d{2}-\d{2}$/.test(value)) return false;
|
||||||
|
return new Date(`${value}T00:00:00Z`).toISOString().slice(0, 10) === value;
|
||||||
|
}
|
||||||
|
|
||||||
|
function dayNumber(value) {
|
||||||
|
return Date.parse(`${value}T00:00:00Z`) / 86_400_000;
|
||||||
|
}
|
||||||
|
|
||||||
|
function dateFromDayNumber(value) {
|
||||||
|
return new Date(value * 86_400_000).toISOString().slice(0, 10);
|
||||||
|
}
|
||||||
|
|
||||||
|
function xmlEscape(value) {
|
||||||
|
return String(value).replaceAll("&", "&").replaceAll("<", "<").replaceAll(">", ">").replaceAll('"', """).replaceAll("'", "'");
|
||||||
|
}
|
||||||
|
|
||||||
|
function repositoryApiPath(repository) {
|
||||||
|
const match = /^([A-Za-z0-9_.-]+)\/([A-Za-z0-9_.-]+)$/.exec(repository);
|
||||||
|
if (!match || [match[1], match[2]].some((segment) => segment === "." || segment === "..")) {
|
||||||
|
throw new Error(`Invalid GitHub repository: ${repository}`);
|
||||||
|
}
|
||||||
|
return `${encodeURIComponent(match[1])}/${encodeURIComponent(match[2])}`;
|
||||||
|
}
|
||||||
|
|
||||||
|
export function normalizeSeries(payload, repository) {
|
||||||
|
if (!payload || typeof payload !== "object" || Array.isArray(payload)) {
|
||||||
|
throw new Error("Star history must be a JSON object");
|
||||||
|
}
|
||||||
|
if (payload.schemaVersion !== 1) {
|
||||||
|
throw new Error(`Unsupported star-history schema version: ${payload.schemaVersion}`);
|
||||||
|
}
|
||||||
|
if (payload.repository !== repository) {
|
||||||
|
throw new Error(`Star history belongs to ${payload.repository ?? "an unknown repository"}, not ${repository}`);
|
||||||
|
}
|
||||||
|
if (!Array.isArray(payload.points) || payload.points.length === 0) {
|
||||||
|
throw new Error("Star history must contain at least one point");
|
||||||
|
}
|
||||||
|
|
||||||
|
let previousDate;
|
||||||
|
const points = payload.points.map((point, index) => {
|
||||||
|
if (!point || typeof point !== "object" || Array.isArray(point)) {
|
||||||
|
throw new Error(`Point ${index + 1} must be an object`);
|
||||||
|
}
|
||||||
|
if (!isIsoDate(point.date)) {
|
||||||
|
throw new Error(`Point ${index + 1} has an invalid date`);
|
||||||
|
}
|
||||||
|
if (!Number.isSafeInteger(point.stars) || point.stars < 0) {
|
||||||
|
throw new Error(`Point ${index + 1} has an invalid star count`);
|
||||||
|
}
|
||||||
|
if (previousDate && point.date <= previousDate) {
|
||||||
|
throw new Error("Star-history dates must be unique and strictly increasing");
|
||||||
|
}
|
||||||
|
previousDate = point.date;
|
||||||
|
return { date: point.date, stars: point.stars };
|
||||||
|
});
|
||||||
|
|
||||||
|
if (payload.updatedAt !== undefined && !isIsoDate(payload.updatedAt)) {
|
||||||
|
throw new Error("Star history has an invalid updatedAt date");
|
||||||
|
}
|
||||||
|
if (payload.lastExactFetch !== undefined && !isIsoDate(payload.lastExactFetch)) {
|
||||||
|
throw new Error("Star history has an invalid lastExactFetch date");
|
||||||
|
}
|
||||||
|
if (payload.source !== "exact" && payload.source !== "snapshot") {
|
||||||
|
throw new Error("Star history source must be exact or snapshot");
|
||||||
|
}
|
||||||
|
|
||||||
|
return {
|
||||||
|
schemaVersion: 1,
|
||||||
|
repository,
|
||||||
|
updatedAt: payload.updatedAt,
|
||||||
|
lastExactFetch: payload.lastExactFetch,
|
||||||
|
source: payload.source,
|
||||||
|
points,
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
export async function loadSeries(path, repository) {
|
||||||
|
try {
|
||||||
|
const raw = await readFile(path, "utf8");
|
||||||
|
if (!raw.trim()) return undefined;
|
||||||
|
return normalizeSeries(JSON.parse(raw), repository);
|
||||||
|
} catch (error) {
|
||||||
|
if (error?.code === "ENOENT") return undefined;
|
||||||
|
if (error instanceof SyntaxError) {
|
||||||
|
throw new Error(`${path} is not valid JSON: ${error.message}`);
|
||||||
|
}
|
||||||
|
throw error;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async function writeFileAtomically(path, contents) {
|
||||||
|
const temporaryPath = `${path}.${process.pid}.tmp`;
|
||||||
|
try {
|
||||||
|
await writeFile(temporaryPath, contents, "utf8");
|
||||||
|
await rename(temporaryPath, path);
|
||||||
|
} catch (error) {
|
||||||
|
await unlink(temporaryPath).catch(() => {});
|
||||||
|
throw error;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
export async function saveSeries(path, series) {
|
||||||
|
await writeFileAtomically(path, `${JSON.stringify(series, null, 2)}\n`);
|
||||||
|
}
|
||||||
|
|
||||||
|
async function readJsonResponse(response) {
|
||||||
|
const declaredLength = Number(response.headers.get("content-length"));
|
||||||
|
if (Number.isFinite(declaredLength) && declaredLength > MAX_RESPONSE_BYTES) {
|
||||||
|
throw new Error(`GitHub response exceeds ${MAX_RESPONSE_BYTES} bytes`);
|
||||||
|
}
|
||||||
|
if (!response.body) return undefined;
|
||||||
|
|
||||||
|
const reader = response.body.getReader();
|
||||||
|
const chunks = [];
|
||||||
|
let totalBytes = 0;
|
||||||
|
|
||||||
|
while (true) {
|
||||||
|
const { done, value } = await reader.read();
|
||||||
|
if (done) break;
|
||||||
|
totalBytes += value.byteLength;
|
||||||
|
if (totalBytes > MAX_RESPONSE_BYTES) {
|
||||||
|
await reader.cancel();
|
||||||
|
throw new Error(`GitHub response exceeds ${MAX_RESPONSE_BYTES} bytes`);
|
||||||
|
}
|
||||||
|
chunks.push(Buffer.from(value));
|
||||||
|
}
|
||||||
|
|
||||||
|
const body = Buffer.concat(chunks).toString("utf8");
|
||||||
|
try {
|
||||||
|
return body ? JSON.parse(body) : undefined;
|
||||||
|
} catch {
|
||||||
|
return undefined;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async function requestJson(url, token, fetchImpl = fetch) {
|
||||||
|
const response = await fetchImpl(url, {
|
||||||
|
headers: {
|
||||||
|
Accept: "application/vnd.github+json",
|
||||||
|
Authorization: `Bearer ${token}`,
|
||||||
|
"X-GitHub-Api-Version": "2022-11-28",
|
||||||
|
"User-Agent": "bookorbit-star-history",
|
||||||
|
},
|
||||||
|
signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS),
|
||||||
|
});
|
||||||
|
|
||||||
|
const payload = await readJsonResponse(response);
|
||||||
|
|
||||||
|
if (!response.ok) {
|
||||||
|
const apiMessage = payload && typeof payload.message === "string" ? payload.message : "GitHub returned no message body";
|
||||||
|
throw new GitHubApiError(`GitHub API returned ${response.status}: ${apiMessage}`, {
|
||||||
|
status: response.status,
|
||||||
|
url,
|
||||||
|
headers: response.headers,
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
return payload;
|
||||||
|
}
|
||||||
|
|
||||||
|
export async function fetchStarDates(repository, token, { fetchImpl = fetch, maxPages = MAX_PAGES, perPage = PER_PAGE } = {}) {
|
||||||
|
const dates = [];
|
||||||
|
const repositoryPath = repositoryApiPath(repository);
|
||||||
|
|
||||||
|
for (let page = 1; page <= maxPages; page += 1) {
|
||||||
|
const url = new URL(`${API_ROOT}/repos/${repositoryPath}/stargazers`);
|
||||||
|
url.searchParams.set("per_page", String(perPage));
|
||||||
|
url.searchParams.set("page", String(page));
|
||||||
|
|
||||||
|
const response = await fetchImpl(url, {
|
||||||
|
headers: {
|
||||||
|
Accept: "application/vnd.github.star+json",
|
||||||
|
Authorization: `Bearer ${token}`,
|
||||||
|
"X-GitHub-Api-Version": "2022-11-28",
|
||||||
|
"User-Agent": "bookorbit-star-history",
|
||||||
|
},
|
||||||
|
signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS),
|
||||||
|
});
|
||||||
|
|
||||||
|
const batch = await readJsonResponse(response);
|
||||||
|
|
||||||
|
if (!response.ok) {
|
||||||
|
const apiMessage = batch && typeof batch.message === "string" ? batch.message : "GitHub returned no message body";
|
||||||
|
throw new GitHubApiError(`GitHub API returned ${response.status}: ${apiMessage}`, {
|
||||||
|
status: response.status,
|
||||||
|
url: url.toString(),
|
||||||
|
headers: response.headers,
|
||||||
|
});
|
||||||
|
}
|
||||||
|
if (!Array.isArray(batch)) {
|
||||||
|
throw new Error("GitHub returned an invalid stargazer response");
|
||||||
|
}
|
||||||
|
|
||||||
|
for (const entry of batch) {
|
||||||
|
const date = entry?.starred_at?.slice(0, 10);
|
||||||
|
if (!isIsoDate(date)) {
|
||||||
|
throw new Error("GitHub returned a stargazer without a valid starred_at timestamp");
|
||||||
|
}
|
||||||
|
dates.push(date);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (batch.length < perPage) {
|
||||||
|
return dates.sort();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
throw new HistoryLimitError(maxPages * perPage);
|
||||||
|
}
|
||||||
|
|
||||||
|
export async function fetchStarCount(repository, token, { fetchImpl = fetch } = {}) {
|
||||||
|
const repositoryPath = repositoryApiPath(repository);
|
||||||
|
const payload = await requestJson(`${API_ROOT}/repos/${repositoryPath}`, token, fetchImpl);
|
||||||
|
if (!Number.isSafeInteger(payload?.stargazers_count) || payload.stargazers_count < 0) {
|
||||||
|
throw new Error("GitHub returned an invalid stargazers_count");
|
||||||
|
}
|
||||||
|
return payload.stargazers_count;
|
||||||
|
}
|
||||||
|
|
||||||
|
export function buildExactSeries(starDates, today) {
|
||||||
|
if (!isIsoDate(today)) throw new Error("today must be an ISO date");
|
||||||
|
if (starDates.length === 0) throw new Error("GitHub returned no stargazers");
|
||||||
|
|
||||||
|
const points = [];
|
||||||
|
let count = 0;
|
||||||
|
|
||||||
|
for (const date of [...starDates].sort()) {
|
||||||
|
if (!isIsoDate(date)) throw new Error(`Invalid stargazer date: ${date}`);
|
||||||
|
if (date > today) throw new Error(`Stargazer date is in the future: ${date}`);
|
||||||
|
count += 1;
|
||||||
|
if (points.at(-1)?.date === date) {
|
||||||
|
points[points.length - 1] = { date, stars: count };
|
||||||
|
} else {
|
||||||
|
points.push({ date, stars: count });
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (points.at(-1).date < today) {
|
||||||
|
points.push({ date: today, stars: count });
|
||||||
|
}
|
||||||
|
|
||||||
|
return points;
|
||||||
|
}
|
||||||
|
|
||||||
|
export function appendSnapshot(points, date, stars) {
|
||||||
|
if (!isIsoDate(date)) throw new Error("Snapshot date must be an ISO date");
|
||||||
|
if (!Number.isSafeInteger(stars) || stars < 0) {
|
||||||
|
throw new Error("Snapshot count must be a non-negative integer");
|
||||||
|
}
|
||||||
|
|
||||||
|
const futurePoint = points.find((point) => point.date > date);
|
||||||
|
if (futurePoint) {
|
||||||
|
throw new Error(`Stored series contains a future point at ${futurePoint.date}`);
|
||||||
|
}
|
||||||
|
|
||||||
|
return [...points.filter((point) => point.date !== date), { date, stars }].sort((a, b) => a.date.localeCompare(b.date));
|
||||||
|
}
|
||||||
|
|
||||||
|
export function niceYAxis(maximum) {
|
||||||
|
const target = Math.max(1, maximum * 1.1);
|
||||||
|
const rawStep = target / 4;
|
||||||
|
const magnitude = 10 ** Math.floor(Math.log10(rawStep));
|
||||||
|
const normalized = rawStep / magnitude;
|
||||||
|
const factor = normalized <= 1 ? 1 : normalized <= 2 ? 2 : normalized <= 2.5 ? 2.5 : normalized <= 5 ? 5 : 10;
|
||||||
|
const step = Math.max(1, factor * magnitude);
|
||||||
|
return {
|
||||||
|
maximum: Math.ceil(target / step) * step,
|
||||||
|
step,
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
function formatCount(value) {
|
||||||
|
return value.toLocaleString("en-US");
|
||||||
|
}
|
||||||
|
|
||||||
|
function formatDateLabel(value, { day = false, year = false } = {}) {
|
||||||
|
return new Intl.DateTimeFormat("en-US", {
|
||||||
|
month: "short",
|
||||||
|
...(day ? { day: "numeric" } : {}),
|
||||||
|
...(year ? { year: "numeric" } : {}),
|
||||||
|
timeZone: "UTC",
|
||||||
|
}).format(new Date(`${value}T00:00:00Z`));
|
||||||
|
}
|
||||||
|
|
||||||
|
function coordinate(value) {
|
||||||
|
return Number(value.toFixed(1));
|
||||||
|
}
|
||||||
|
|
||||||
|
function fivePointStarPath(centerX, centerY, outerRadius) {
|
||||||
|
const points = [];
|
||||||
|
for (let index = 0; index < 10; index += 1) {
|
||||||
|
const radius = index % 2 === 0 ? outerRadius : outerRadius * 0.44;
|
||||||
|
const angle = -Math.PI / 2 + (index * Math.PI) / 5;
|
||||||
|
points.push(`${coordinate(centerX + Math.cos(angle) * radius)},${coordinate(centerY + Math.sin(angle) * radius)}`);
|
||||||
|
}
|
||||||
|
return `M${points.join(" L")}Z`;
|
||||||
|
}
|
||||||
|
|
||||||
|
function seededRandom(seed) {
|
||||||
|
let state = 2_166_136_261;
|
||||||
|
for (const character of seed) {
|
||||||
|
state ^= character.codePointAt(0);
|
||||||
|
state = Math.imul(state, 16_777_619);
|
||||||
|
}
|
||||||
|
return () => {
|
||||||
|
state ^= state << 13;
|
||||||
|
state ^= state >>> 17;
|
||||||
|
state ^= state << 5;
|
||||||
|
return (state >>> 0) / 4_294_967_296;
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Keeps the rendered path small enough for a README-sized card. Years of daily
|
||||||
|
* history would otherwise ship thousands of curve segments nobody can see.
|
||||||
|
*/
|
||||||
|
export function condensePoints(points, limit = MAX_RENDERED_POINTS) {
|
||||||
|
if (points.length <= limit) return points;
|
||||||
|
|
||||||
|
const stride = (points.length - 1) / (limit - 1);
|
||||||
|
const indexes = new Set();
|
||||||
|
for (let index = 0; index < limit; index += 1) {
|
||||||
|
indexes.add(Math.round(index * stride));
|
||||||
|
}
|
||||||
|
indexes.add(points.length - 1);
|
||||||
|
|
||||||
|
return [...indexes].sort((a, b) => a - b).map((index) => points[index]);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Smooths the series with monotone cubic interpolation so the curve never
|
||||||
|
* overshoots into a star count the repository never had.
|
||||||
|
*/
|
||||||
|
function monotoneCurve(coordinates) {
|
||||||
|
const [first] = coordinates;
|
||||||
|
const commands = [`M${coordinate(first[0])} ${coordinate(first[1])}`];
|
||||||
|
const widths = [];
|
||||||
|
const slopes = [];
|
||||||
|
|
||||||
|
for (let index = 0; index < coordinates.length - 1; index += 1) {
|
||||||
|
const width = coordinates[index + 1][0] - coordinates[index][0];
|
||||||
|
widths.push(width);
|
||||||
|
slopes.push(width === 0 ? 0 : (coordinates[index + 1][1] - coordinates[index][1]) / width);
|
||||||
|
}
|
||||||
|
|
||||||
|
const tangents = coordinates.map((_, index) => {
|
||||||
|
if (index === 0) return slopes[0];
|
||||||
|
if (index === coordinates.length - 1) return slopes.at(-1);
|
||||||
|
if (slopes[index - 1] * slopes[index] <= 0) return 0;
|
||||||
|
const left = 2 * widths[index] + widths[index - 1];
|
||||||
|
const right = widths[index] + 2 * widths[index - 1];
|
||||||
|
return (left + right) / (left / slopes[index - 1] + right / slopes[index]);
|
||||||
|
});
|
||||||
|
|
||||||
|
for (let index = 0; index < coordinates.length - 1; index += 1) {
|
||||||
|
const [x0, y0] = coordinates[index];
|
||||||
|
const [x1, y1] = coordinates[index + 1];
|
||||||
|
const third = widths[index] / 3;
|
||||||
|
commands.push(
|
||||||
|
`C${coordinate(x0 + third)} ${coordinate(y0 + tangents[index] * third)} ${coordinate(x1 - third)} ${coordinate(y1 - tangents[index + 1] * third)} ${coordinate(x1)} ${coordinate(y1)}`,
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
return commands.join(" ");
|
||||||
|
}
|
||||||
|
|
||||||
|
function polylineLength(coordinates) {
|
||||||
|
let total = 0;
|
||||||
|
for (let index = 1; index < coordinates.length; index += 1) {
|
||||||
|
total += Math.hypot(coordinates[index][0] - coordinates[index - 1][0], coordinates[index][1] - coordinates[index - 1][1]);
|
||||||
|
}
|
||||||
|
return total;
|
||||||
|
}
|
||||||
|
|
||||||
|
const RESERVED_TEXT_BOXES = [
|
||||||
|
{ x: 16, y: 14, width: 290, height: 34 },
|
||||||
|
{ x: WIDTH - 190, y: 20, width: 174, height: 28 },
|
||||||
|
{ x: WIDTH - 170, y: HEIGHT - 34, width: 154, height: 26 },
|
||||||
|
];
|
||||||
|
|
||||||
|
function overlapsText(x, y) {
|
||||||
|
return RESERVED_TEXT_BOXES.some((box) => x >= box.x && x <= box.x + box.width && y >= box.y && y <= box.y + box.height);
|
||||||
|
}
|
||||||
|
|
||||||
|
function renderStarfield(repository) {
|
||||||
|
const random = seededRandom(repository);
|
||||||
|
const dust = [];
|
||||||
|
const twinkles = [];
|
||||||
|
|
||||||
|
for (let index = 0; index < 48; index += 1) {
|
||||||
|
const x = 14 + random() * (WIDTH - 28);
|
||||||
|
const y = 12 + random() * (HEIGHT - 24);
|
||||||
|
const roll = random();
|
||||||
|
|
||||||
|
if (overlapsText(x, y)) continue;
|
||||||
|
|
||||||
|
if (roll > 0.87) {
|
||||||
|
const radius = 2.6 + random() * 1.9;
|
||||||
|
const duration = 3.6 + random() * 3.4;
|
||||||
|
const delay = -(random() * duration);
|
||||||
|
twinkles.push(
|
||||||
|
`<path class="twinkle" d="${fivePointStarPath(x, y, radius)}" fill="#dbe5ff" style="animation-duration:${duration.toFixed(1)}s;animation-delay:${delay.toFixed(1)}s"/>`,
|
||||||
|
);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
const radius = 0.6 + random() * 1.1;
|
||||||
|
const opacity = 0.12 + random() * 0.3;
|
||||||
|
dust.push(`<circle cx="${coordinate(x)}" cy="${coordinate(y)}" r="${radius.toFixed(2)}" fill="#c8d6ff" opacity="${opacity.toFixed(2)}"/>`);
|
||||||
|
}
|
||||||
|
|
||||||
|
return [...dust, ...twinkles].join("\n ");
|
||||||
|
}
|
||||||
|
|
||||||
|
function buildDateAxis(firstDate, lastDate) {
|
||||||
|
const firstDay = dayNumber(firstDate);
|
||||||
|
const span = Math.max(1, dayNumber(lastDate) - firstDay);
|
||||||
|
const spansYears = firstDate.slice(0, 4) !== lastDate.slice(0, 4);
|
||||||
|
|
||||||
|
if (span < 45) {
|
||||||
|
return [0.08, 0.5, 0.92].map((fraction, index) => {
|
||||||
|
const date = dateFromDayNumber(Math.round(firstDay + span * fraction));
|
||||||
|
return { date, label: formatDateLabel(date, { day: true, year: index === 0 && spansYears }) };
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
const months = [];
|
||||||
|
const cursor = new Date(`${firstDate}T00:00:00Z`);
|
||||||
|
cursor.setUTCDate(1);
|
||||||
|
cursor.setUTCMonth(cursor.getUTCMonth() + 1);
|
||||||
|
while (cursor.toISOString().slice(0, 10) < lastDate) {
|
||||||
|
months.push(cursor.toISOString().slice(0, 10));
|
||||||
|
cursor.setUTCMonth(cursor.getUTCMonth() + 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
const stride = Math.ceil(months.length / MAX_DATE_TICKS);
|
||||||
|
return months.filter((_, index) => index % stride === 0).map((date, index) => ({ date, label: formatDateLabel(date, { year: index === 0 }) }));
|
||||||
|
}
|
||||||
|
|
||||||
|
export function renderSvg(series) {
|
||||||
|
const { repository, points } = series;
|
||||||
|
if (points.length < 2) {
|
||||||
|
throw new Error("At least two data points are required to render the chart");
|
||||||
|
}
|
||||||
|
|
||||||
|
const first = points[0];
|
||||||
|
const latest = points.at(-1);
|
||||||
|
const firstDay = dayNumber(first.date);
|
||||||
|
const daySpan = Math.max(1, dayNumber(latest.date) - firstDay);
|
||||||
|
const plotWidth = PLOT_RIGHT - PLOT_LEFT;
|
||||||
|
const plotHeight = BASELINE - PLOT_TOP;
|
||||||
|
const yAxis = niceYAxis(Math.max(...points.map((point) => point.stars)));
|
||||||
|
|
||||||
|
const x = (date) => PLOT_LEFT + ((dayNumber(date) - firstDay) / daySpan) * plotWidth;
|
||||||
|
const y = (stars) => BASELINE - (stars / yAxis.maximum) * plotHeight;
|
||||||
|
|
||||||
|
const curve = condensePoints(points).map((point) => [x(point.date), y(point.stars)]);
|
||||||
|
const trendPath = monotoneCurve(curve);
|
||||||
|
const areaPath = `${trendPath} L${coordinate(curve.at(-1)[0])} ${BASELINE} L${coordinate(curve[0][0])} ${BASELINE} Z`;
|
||||||
|
const trendLength = Math.ceil(polylineLength(curve) * 1.08);
|
||||||
|
|
||||||
|
const gridLines = [];
|
||||||
|
for (let value = 0; value <= yAxis.maximum; value += yAxis.step) {
|
||||||
|
const gridY = y(value);
|
||||||
|
gridLines.push(`<line x1="${PLOT_LEFT}" y1="${coordinate(gridY)}" x2="${GRID_RIGHT}" y2="${coordinate(gridY)}" class="grid"/>`);
|
||||||
|
if (Number.isInteger(value)) {
|
||||||
|
gridLines.push(`<text x="${PLOT_LEFT - 14}" y="${coordinate(gridY + 4)}" text-anchor="end" class="axis-label">${formatCount(value)}</text>`);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
const dateLabels = buildDateAxis(first.date, latest.date).map(
|
||||||
|
({ date, label }) => `<text x="${coordinate(x(date))}" y="${AXIS_LABEL_Y}" text-anchor="middle" class="axis-label">${label}</text>`,
|
||||||
|
);
|
||||||
|
|
||||||
|
const endX = x(latest.date);
|
||||||
|
const endY = y(latest.stars);
|
||||||
|
const badgeLabel = `${formatCount(latest.stars)} stars`;
|
||||||
|
const badgeWidth = Math.round(badgeLabel.length * 7.5 + 20);
|
||||||
|
const badgeX = Math.min(endX - 14 - badgeWidth, PANEL_X + PANEL_WIDTH - badgeWidth - 12);
|
||||||
|
const badgeY = Math.max(PANEL_Y + 8, endY - 38);
|
||||||
|
const repositoryLabel = xmlEscape(repository);
|
||||||
|
const updatedAt = xmlEscape(series.updatedAt || latest.date);
|
||||||
|
|
||||||
|
return `<svg xmlns="http://www.w3.org/2000/svg" width="${WIDTH}" height="${HEIGHT}" viewBox="0 0 ${WIDTH} ${HEIGHT}" role="img" aria-labelledby="title description">
|
||||||
|
<title id="title">${repositoryLabel} GitHub stars over time</title>
|
||||||
|
<desc id="description">${repositoryLabel} reached ${formatCount(latest.stars)} GitHub stars on ${updatedAt}.</desc>
|
||||||
|
<defs>
|
||||||
|
<linearGradient id="plot" x1="0" y1="0" x2="0.4" y2="1">
|
||||||
|
<stop offset="0" stop-color="#141f42"/>
|
||||||
|
<stop offset="1" stop-color="#0a1024"/>
|
||||||
|
</linearGradient>
|
||||||
|
<linearGradient id="trend" x1="0" y1="0" x2="1" y2="0">
|
||||||
|
<stop offset="0" stop-color="#4f8dff"/>
|
||||||
|
<stop offset="0.5" stop-color="#8fb0ff"/>
|
||||||
|
<stop offset="0.79" stop-color="#e6d29a"/>
|
||||||
|
<stop offset="1" stop-color="#ffcf6b"/>
|
||||||
|
</linearGradient>
|
||||||
|
<linearGradient id="trendArea" x1="0" y1="0" x2="0" y2="1">
|
||||||
|
<stop offset="0" stop-color="#6b9cff" stop-opacity="0.36"/>
|
||||||
|
<stop offset="1" stop-color="#6b9cff" stop-opacity="0.02"/>
|
||||||
|
</linearGradient>
|
||||||
|
<filter id="trendGlow" x="-6%" y="-40%" width="112%" height="180%">
|
||||||
|
<feGaussianBlur stdDeviation="5"/>
|
||||||
|
</filter>
|
||||||
|
<filter id="headGlow" x="-150%" y="-150%" width="400%" height="400%">
|
||||||
|
<feGaussianBlur stdDeviation="3.4" result="glow"/>
|
||||||
|
<feMerge><feMergeNode in="glow"/><feMergeNode in="SourceGraphic"/></feMerge>
|
||||||
|
</filter>
|
||||||
|
<clipPath id="cardClip"><rect width="${WIDTH}" height="${HEIGHT}" rx="16"/></clipPath>
|
||||||
|
<style>
|
||||||
|
text { font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
|
||||||
|
.grid { stroke: #93a2cc; stroke-opacity: 0.18; stroke-width: 1; stroke-dasharray: 5 7; }
|
||||||
|
.axis-label { fill: #97a3c4; font-size: 13px; }
|
||||||
|
.twinkle { opacity: 0.55; transform-box: fill-box; transform-origin: center; animation: twinkle ease-in-out infinite; }
|
||||||
|
.trend, .trend-glow { stroke-dasharray: ${trendLength}; animation: draw 2.1s cubic-bezier(0.22, 0.61, 0.36, 1) 1; }
|
||||||
|
.satellite { transform-origin: 0 0; animation: spin 16s linear infinite; }
|
||||||
|
@keyframes twinkle { 0%, 100% { opacity: 0.25; transform: scale(0.72); } 50% { opacity: 1; transform: scale(1.12); } }
|
||||||
|
@keyframes draw { from { stroke-dashoffset: ${trendLength}; } to { stroke-dashoffset: 0; } }
|
||||||
|
@keyframes spin { to { transform: rotate(360deg); } }
|
||||||
|
@media (prefers-reduced-motion: reduce) {
|
||||||
|
.twinkle, .trend, .trend-glow, .satellite { animation: none; }
|
||||||
|
.twinkle { opacity: 0.65; }
|
||||||
|
}
|
||||||
|
</style>
|
||||||
|
</defs>
|
||||||
|
<g clip-path="url(#cardClip)">
|
||||||
|
<rect width="${WIDTH}" height="${HEIGHT}" fill="#080d1c"/>
|
||||||
|
<rect x="${PANEL_X}" y="${PANEL_Y}" width="${PANEL_WIDTH}" height="${PANEL_HEIGHT}" rx="14" fill="url(#plot)"/>
|
||||||
|
<g>
|
||||||
|
${renderStarfield(repository)}
|
||||||
|
</g>
|
||||||
|
<g>
|
||||||
|
${gridLines.join("\n ")}
|
||||||
|
</g>
|
||||||
|
<path d="${areaPath}" fill="url(#trendArea)"/>
|
||||||
|
<path class="trend-glow" d="${trendPath}" fill="none" stroke="url(#trend)" stroke-width="9" stroke-linecap="round" opacity="0.32" filter="url(#trendGlow)"/>
|
||||||
|
<path class="trend" d="${trendPath}" fill="none" stroke="url(#trend)" stroke-width="3.4" stroke-linecap="round" stroke-linejoin="round"/>
|
||||||
|
</g>
|
||||||
|
<g id="bookorbit-mark" transform="translate(22 20)" fill="none" stroke="#a9c8ff" stroke-width="1.7" stroke-linecap="round" stroke-linejoin="round">
|
||||||
|
<path d="M20.341 6.484A10 10 0 0 1 10.266 21.85"/>
|
||||||
|
<path d="M3.659 17.516A10 10 0 0 1 13.74 2.152"/>
|
||||||
|
<circle cx="12" cy="12" r="3"/>
|
||||||
|
<g transform="translate(12 12)">
|
||||||
|
<g class="satellite">
|
||||||
|
<circle cx="7" cy="-7" r="2" fill="#ffcf6b" stroke="#ffcf6b"/>
|
||||||
|
<circle cx="-7" cy="7" r="2"/>
|
||||||
|
</g>
|
||||||
|
</g>
|
||||||
|
</g>
|
||||||
|
<text x="56" y="39" fill="#f1f5ff" font-size="17" font-weight="700">${repositoryLabel}</text>
|
||||||
|
<text x="${WIDTH - 22}" y="39" text-anchor="end" fill="#8390b4" font-size="13">GitHub stars over time</text>
|
||||||
|
${dateLabels.join("\n ")}
|
||||||
|
<g id="current-total" transform="translate(${coordinate(badgeX)} ${coordinate(badgeY)})">
|
||||||
|
<rect width="${badgeWidth}" height="26" rx="13" fill="#101835" stroke="#3b4a78"/>
|
||||||
|
<text x="${badgeWidth / 2}" y="17.5" text-anchor="middle" fill="#ffcf6b" font-size="13.5" font-weight="700">${badgeLabel}</text>
|
||||||
|
</g>
|
||||||
|
<g id="current-coordinate" transform="translate(${coordinate(endX)} ${coordinate(endY)})">
|
||||||
|
<path d="${fivePointStarPath(0, 0, 8.5)}" fill="#ffcf6b" filter="url(#headGlow)"/>
|
||||||
|
</g>
|
||||||
|
<text x="${WIDTH - 22}" y="${HEIGHT - 16}" text-anchor="end" fill="#5f6b8c" font-size="11.5">updated ${updatedAt}</text>
|
||||||
|
<rect x="0.5" y="0.5" width="${WIDTH - 1}" height="${HEIGHT - 1}" rx="16" fill="none" stroke="#232e4e"/>
|
||||||
|
</svg>
|
||||||
|
`;
|
||||||
|
}
|
||||||
|
|
||||||
|
function describeFallback(error) {
|
||||||
|
if (error instanceof GitHubApiError) {
|
||||||
|
const remaining = error.headers?.get?.("x-ratelimit-remaining");
|
||||||
|
const rateLimit = remaining === "0" ? " Rate limit exhausted." : "";
|
||||||
|
return `${error.message}.${rateLimit}`;
|
||||||
|
}
|
||||||
|
return error.message;
|
||||||
|
}
|
||||||
|
|
||||||
|
export async function updateSeries({ repository, existingSeries, exactToken, metadataToken, today = utcToday(), fetchImpl = fetch }) {
|
||||||
|
repositoryApiPath(repository);
|
||||||
|
|
||||||
|
if (exactToken) {
|
||||||
|
try {
|
||||||
|
const starDates = await fetchStarDates(repository, exactToken, { fetchImpl });
|
||||||
|
return {
|
||||||
|
schemaVersion: 1,
|
||||||
|
repository,
|
||||||
|
updatedAt: today,
|
||||||
|
lastExactFetch: today,
|
||||||
|
source: "exact",
|
||||||
|
points: buildExactSeries(starDates, today),
|
||||||
|
};
|
||||||
|
} catch (error) {
|
||||||
|
if (!existingSeries) throw error;
|
||||||
|
console.warn(`Exact stargazer history is unavailable. ${describeFallback(error)}`);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!existingSeries) {
|
||||||
|
throw new Error("No stored series is available. Provide a bootstrap series or STAR_HISTORY_TOKEN.");
|
||||||
|
}
|
||||||
|
if (!metadataToken) {
|
||||||
|
throw new Error("GITHUB_TOKEN is required to refresh the current star count");
|
||||||
|
}
|
||||||
|
|
||||||
|
const count = await fetchStarCount(repository, metadataToken, { fetchImpl });
|
||||||
|
return {
|
||||||
|
schemaVersion: 1,
|
||||||
|
repository,
|
||||||
|
updatedAt: today,
|
||||||
|
...(existingSeries.lastExactFetch ? { lastExactFetch: existingSeries.lastExactFetch } : {}),
|
||||||
|
source: "snapshot",
|
||||||
|
points: appendSnapshot(existingSeries.points, today, count),
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
export async function run(argv = process.argv.slice(2)) {
|
||||||
|
const options = parseArguments(argv);
|
||||||
|
const storedSeries = await loadSeries(options.seriesPath, options.repository);
|
||||||
|
const bootstrapSeries = storedSeries || !options.bootstrapPath ? undefined : await loadSeries(options.bootstrapPath, options.repository);
|
||||||
|
const existingSeries = storedSeries || bootstrapSeries;
|
||||||
|
|
||||||
|
const series = await updateSeries({
|
||||||
|
repository: options.repository,
|
||||||
|
existingSeries,
|
||||||
|
exactToken: process.env.STAR_HISTORY_TOKEN,
|
||||||
|
metadataToken: process.env.GITHUB_TOKEN || process.env.STAR_HISTORY_TOKEN,
|
||||||
|
});
|
||||||
|
|
||||||
|
const svg = renderSvg(series);
|
||||||
|
await saveSeries(options.seriesPath, series);
|
||||||
|
await writeFileAtomically(options.outputPath, svg);
|
||||||
|
|
||||||
|
console.log(
|
||||||
|
`Wrote ${options.outputPath} with ${series.points.length} points and ${formatCount(series.points.at(-1).stars)} stars (${series.source})`,
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
const entryPath = process.argv[1] ? resolve(process.argv[1]) : undefined;
|
||||||
|
if (entryPath === fileURLToPath(import.meta.url)) {
|
||||||
|
run().catch((error) => {
|
||||||
|
console.error(error.message);
|
||||||
|
process.exitCode = 1;
|
||||||
|
});
|
||||||
|
}
|
||||||
@@ -0,0 +1,239 @@
|
|||||||
|
import assert from "node:assert/strict";
|
||||||
|
import { mkdtemp, rm, writeFile } from "node:fs/promises";
|
||||||
|
import { tmpdir } from "node:os";
|
||||||
|
import { join } from "node:path";
|
||||||
|
import { afterEach, describe, it, mock } from "node:test";
|
||||||
|
|
||||||
|
import {
|
||||||
|
HistoryLimitError,
|
||||||
|
appendSnapshot,
|
||||||
|
buildExactSeries,
|
||||||
|
condensePoints,
|
||||||
|
fetchStarDates,
|
||||||
|
loadSeries,
|
||||||
|
niceYAxis,
|
||||||
|
normalizeSeries,
|
||||||
|
renderSvg,
|
||||||
|
saveSeries,
|
||||||
|
updateSeries,
|
||||||
|
} from "./generate.mjs";
|
||||||
|
|
||||||
|
const REPOSITORY = "bookorbit/bookorbit";
|
||||||
|
const temporaryDirectories = [];
|
||||||
|
|
||||||
|
function dateFromDay(value) {
|
||||||
|
return new Date(value * 86_400_000).toISOString().slice(0, 10);
|
||||||
|
}
|
||||||
|
|
||||||
|
afterEach(async () => {
|
||||||
|
mock.restoreAll();
|
||||||
|
await Promise.all(temporaryDirectories.splice(0).map((directory) => rm(directory, { recursive: true, force: true })));
|
||||||
|
});
|
||||||
|
|
||||||
|
function series(overrides = {}) {
|
||||||
|
return {
|
||||||
|
schemaVersion: 1,
|
||||||
|
repository: REPOSITORY,
|
||||||
|
updatedAt: "2026-07-27",
|
||||||
|
lastExactFetch: "2026-07-26",
|
||||||
|
source: "snapshot",
|
||||||
|
points: [
|
||||||
|
{ date: "2026-05-15", stars: 1 },
|
||||||
|
{ date: "2026-06-15", stars: 540 },
|
||||||
|
{ date: "2026-07-27", stars: 1768 },
|
||||||
|
],
|
||||||
|
...overrides,
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
describe("series data", () => {
|
||||||
|
it("collapses exact timestamps into cumulative daily points", () => {
|
||||||
|
assert.deepEqual(buildExactSeries(["2026-05-16", "2026-05-15", "2026-05-16", "2026-05-18"], "2026-05-20"), [
|
||||||
|
{ date: "2026-05-15", stars: 1 },
|
||||||
|
{ date: "2026-05-16", stars: 3 },
|
||||||
|
{ date: "2026-05-18", stars: 4 },
|
||||||
|
{ date: "2026-05-20", stars: 4 },
|
||||||
|
]);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("replaces a same-day snapshot and permits legitimate decreases", () => {
|
||||||
|
assert.deepEqual(
|
||||||
|
appendSnapshot(
|
||||||
|
[
|
||||||
|
{ date: "2026-07-26", stars: 101 },
|
||||||
|
{ date: "2026-07-27", stars: 103 },
|
||||||
|
],
|
||||||
|
"2026-07-27",
|
||||||
|
100,
|
||||||
|
),
|
||||||
|
[
|
||||||
|
{ date: "2026-07-26", stars: 101 },
|
||||||
|
{ date: "2026-07-27", stars: 100 },
|
||||||
|
],
|
||||||
|
);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("rejects exact timestamps in the future", () => {
|
||||||
|
assert.throws(() => buildExactSeries(["2026-07-28"], "2026-07-27"), /in the future/);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("rejects repository mismatches and duplicate dates", () => {
|
||||||
|
assert.throws(() => normalizeSeries(series({ repository: "someone/else" }), REPOSITORY), /belongs to someone\/else/);
|
||||||
|
assert.throws(
|
||||||
|
() =>
|
||||||
|
normalizeSeries(
|
||||||
|
series({
|
||||||
|
points: [
|
||||||
|
{ date: "2026-07-27", stars: 10 },
|
||||||
|
{ date: "2026-07-27", stars: 11 },
|
||||||
|
],
|
||||||
|
}),
|
||||||
|
REPOSITORY,
|
||||||
|
),
|
||||||
|
/strictly increasing/,
|
||||||
|
);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("round-trips an atomically written series", async () => {
|
||||||
|
const directory = await mkdtemp(join(tmpdir(), "bookorbit-star-history-"));
|
||||||
|
temporaryDirectories.push(directory);
|
||||||
|
const path = join(directory, "series.json");
|
||||||
|
|
||||||
|
await saveSeries(path, series());
|
||||||
|
|
||||||
|
assert.deepEqual(await loadSeries(path, REPOSITORY), series());
|
||||||
|
});
|
||||||
|
|
||||||
|
it("reports malformed JSON with its path", async () => {
|
||||||
|
const directory = await mkdtemp(join(tmpdir(), "bookorbit-star-history-"));
|
||||||
|
temporaryDirectories.push(directory);
|
||||||
|
const path = join(directory, "broken.json");
|
||||||
|
await writeFile(path, "{", "utf8");
|
||||||
|
|
||||||
|
await assert.rejects(loadSeries(path, REPOSITORY), /broken\.json is not valid JSON/);
|
||||||
|
});
|
||||||
|
});
|
||||||
|
|
||||||
|
describe("GitHub data sources", () => {
|
||||||
|
it("requests timestamped stargazers and returns sorted dates", async () => {
|
||||||
|
const fetchImpl = mock.fn(async (_url, options) => {
|
||||||
|
assert.equal(options.headers.Accept, "application/vnd.github.star+json");
|
||||||
|
return new Response(JSON.stringify([{ starred_at: "2026-05-16T03:20:51Z" }, { starred_at: "2026-05-15T18:12:51Z" }]), { status: 200 });
|
||||||
|
});
|
||||||
|
|
||||||
|
assert.deepEqual(await fetchStarDates(REPOSITORY, "token", { fetchImpl }), ["2026-05-15", "2026-05-16"]);
|
||||||
|
assert.equal(fetchImpl.mock.callCount(), 1);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("fails instead of silently truncating exact history", async () => {
|
||||||
|
const fetchImpl = async () =>
|
||||||
|
new Response(JSON.stringify([{ starred_at: "2026-05-15T18:12:51Z" }]), {
|
||||||
|
status: 200,
|
||||||
|
});
|
||||||
|
|
||||||
|
await assert.rejects(
|
||||||
|
fetchStarDates(REPOSITORY, "token", {
|
||||||
|
fetchImpl,
|
||||||
|
maxPages: 1,
|
||||||
|
perPage: 1,
|
||||||
|
}),
|
||||||
|
HistoryLimitError,
|
||||||
|
);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("rejects oversized API responses before reading them", async () => {
|
||||||
|
const fetchImpl = async () =>
|
||||||
|
new Response("[]", {
|
||||||
|
status: 200,
|
||||||
|
headers: { "content-length": "2000001" },
|
||||||
|
});
|
||||||
|
|
||||||
|
await assert.rejects(fetchStarDates(REPOSITORY, "token", { fetchImpl }), /exceeds 2000000 bytes/);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("rejects invalid repository identifiers", async () => {
|
||||||
|
await assert.rejects(fetchStarDates("../private", "token", { fetchImpl: mock.fn() }), /Invalid GitHub repository/);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("falls back to the current count while preserving exact-history metadata", async () => {
|
||||||
|
mock.method(console, "warn", () => {});
|
||||||
|
const fetchImpl = async (url) => {
|
||||||
|
if (String(url).includes("/stargazers")) {
|
||||||
|
return new Response(JSON.stringify({ message: "Forbidden" }), {
|
||||||
|
status: 403,
|
||||||
|
});
|
||||||
|
}
|
||||||
|
return new Response(JSON.stringify({ stargazers_count: 1771 }), {
|
||||||
|
status: 200,
|
||||||
|
});
|
||||||
|
};
|
||||||
|
|
||||||
|
const updated = await updateSeries({
|
||||||
|
repository: REPOSITORY,
|
||||||
|
existingSeries: series(),
|
||||||
|
exactToken: "exact-token",
|
||||||
|
metadataToken: "metadata-token",
|
||||||
|
today: "2026-07-28",
|
||||||
|
fetchImpl,
|
||||||
|
});
|
||||||
|
|
||||||
|
assert.equal(updated.source, "snapshot");
|
||||||
|
assert.equal(updated.lastExactFetch, "2026-07-26");
|
||||||
|
assert.deepEqual(updated.points.at(-1), {
|
||||||
|
date: "2026-07-28",
|
||||||
|
stars: 1771,
|
||||||
|
});
|
||||||
|
});
|
||||||
|
});
|
||||||
|
|
||||||
|
describe("SVG rendering", () => {
|
||||||
|
it("chooses readable rounded y-axis intervals", () => {
|
||||||
|
assert.deepEqual(niceYAxis(1768), { maximum: 2000, step: 500 });
|
||||||
|
assert.deepEqual(niceYAxis(8), { maximum: 10, step: 2.5 });
|
||||||
|
});
|
||||||
|
|
||||||
|
it("renders a deterministic self-contained BookOrbit star card", () => {
|
||||||
|
const svg = renderSvg(series());
|
||||||
|
|
||||||
|
assert.equal(svg, renderSvg(series()));
|
||||||
|
assert.match(svg, /bookorbit\/bookorbit/);
|
||||||
|
assert.match(svg, /id="bookorbit-mark"/);
|
||||||
|
assert.match(svg, /id="current-coordinate"/);
|
||||||
|
assert.match(svg, /id="current-total"/);
|
||||||
|
assert.match(svg, /class="twinkle"/);
|
||||||
|
assert.match(svg, /prefers-reduced-motion/);
|
||||||
|
assert.match(svg, /GitHub stars over time/);
|
||||||
|
assert.match(svg, /updated 2026-07-27/);
|
||||||
|
assert.match(svg, /1,768 stars/);
|
||||||
|
assert.doesNotMatch(svg, /<script|<animate|(?:href|src)=["']https?:/);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("condenses long histories so the card stays small", () => {
|
||||||
|
const points = Array.from({ length: 900 }, (_, index) => ({
|
||||||
|
date: dateFromDay(20_000 + index),
|
||||||
|
stars: index + 1,
|
||||||
|
}));
|
||||||
|
|
||||||
|
const condensed = condensePoints(points);
|
||||||
|
|
||||||
|
assert.ok(condensed.length <= 180);
|
||||||
|
assert.deepEqual(condensed[0], points[0]);
|
||||||
|
assert.deepEqual(condensed.at(-1), points.at(-1));
|
||||||
|
assert.ok(condensed.every((point, index) => index === 0 || point.date > condensed[index - 1].date));
|
||||||
|
assert.equal(condensePoints(points.slice(0, 40)).length, 40);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("keeps the trend line visible when CSS animations are unsupported", () => {
|
||||||
|
const svg = renderSvg(series());
|
||||||
|
|
||||||
|
assert.match(svg, /@keyframes draw \{ from \{ stroke-dashoffset: \d+; \} to \{ stroke-dashoffset: 0; \} \}/);
|
||||||
|
assert.doesNotMatch(svg, /\.trend[^{]*\{[^}]*stroke-dashoffset:/);
|
||||||
|
});
|
||||||
|
|
||||||
|
it("escapes repository text used in SVG markup", () => {
|
||||||
|
const svg = renderSvg(series({ repository: "book&orbit/<chart>" }));
|
||||||
|
|
||||||
|
assert.match(svg, /book&orbit\/<chart>/);
|
||||||
|
assert.doesNotMatch(svg, /book&orbit\/<chart>/);
|
||||||
|
});
|
||||||
|
});
|
||||||
Reference in New Issue
Block a user