feat: rewrite shinycannon in TypeScript

.claude/settings.json

@@ -0,0 +1,84 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(ls:*)",
+      "Bash(pwd:*)",
+      "Bash(find:*)",
+      "Bash(file:*)",
+      "Bash(stat:*)",
+      "Bash(wc:*)",
+      "Bash(head:*)",
+      "Bash(tail:*)",
+      "Bash(cat:*)",
+      "Bash(tree:*)",
+      "Bash(git status:*)",
+      "Bash(git log:*)",
+      "Bash(git diff:*)",
+      "Bash(git show:*)",
+      "Bash(git branch:*)",
+      "Bash(git remote:*)",
+      "Bash(git tag:*)",
+      "Bash(git stash list:*)",
+      "Bash(git rev-parse:*)",
+      "Bash(git add:*)",
+      "Bash(git commit:*)",
+      "Bash(gh pr view:*)",
+      "Bash(gh pr list:*)",
+      "Bash(gh pr checks:*)",
+      "Bash(gh pr diff:*)",
+      "Bash(gh issue view:*)",
+      "Bash(gh issue list:*)",
+      "Bash(gh run view:*)",
+      "Bash(gh run list:*)",
+      "Bash(gh run logs:*)",
+      "Bash(gh repo view:*)",
+      "Bash(gh api:*)",
+      "Bash(node --version:*)",
+      "Bash(npm --version:*)",
+      "Bash(npm list:*)",
+      "Bash(npm view:*)",
+      "Bash(npm outdated:*)",
+      "Bash(npm ls:*)",
+      "Bash(tsc --version:*)",
+      "Bash(npx tsc --noEmit:*)",
+      "Bash(npm run build:*)",
+      "Bash(npm run test:*)",
+      "Bash(npm run typecheck:*)",
+      "Bash(npm run pre-push:*)",
+      "Bash(npm run lint:*)",
+      "Bash(npm run format:*)",
+      "Bash(npm run dev:*)",
+      "WebFetch(domain:docs.github.com)",
+      "WebFetch(domain:cli.github.com)",
+      "WebFetch(domain:react.dev)",
+      "WebFetch(domain:vitejs.dev)",
+      "WebFetch(domain:vitest.dev)",
+      "WebFetch(domain:tailwindcss.com)",
+      "WebFetch(domain:www.typescriptlang.org)",
+      "WebFetch(domain:npmjs.com)"
+    ],
+    "deny": []
+  },
+  "hooks": {
+    "PostToolUse": [
+      {
+        "matcher": "Edit|Write",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "jq -r '.tool_input.file_path' | { read file_path; if echo \"$file_path\" | grep -q '\\.tsx?$'; then npx prettier --write \"$file_path\"; fi; }"
+          },
+          {
+            "type": "command",
+            "command": "jq -r '.tool_input.file_path' | { read file_path; if echo \"$file_path\" | grep -q '\\.tsx?$'; then npx tsc --noEmit --pretty 2>&1; fi; }"
+          }
+        ]
+      }
+    ]
+  },
+  "preCommit": [
+    {
+      "command": "npx tsc --noEmit && npx eslint --quiet src/"
+    }
+  ]
+}

.github/workflows/check.yml

@@ -0,0 +1,84 @@
+name: check
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+concurrency:
+  group: check-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+      - run: npm ci
+      - run: npm run lint
+
+  typecheck:
+    name: Typecheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+      - run: npm ci
+      - run: npm run typecheck
+
+  test:
+    name: Test (Node ${{ matrix.node-version }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [20, 22]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+      - run: npm test
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+
+  check:
+    name: check
+    if: always()
+    needs: [lint, typecheck, test, build]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check job results
+        run: |
+          if [[ "${{ needs.lint.result }}" != "success" ||
+                "${{ needs.typecheck.result }}" != "success" ||
+                "${{ needs.test.result }}" != "success" ||
+                "${{ needs.build.result }}" != "success" ]]; then
+            echo "One or more CI jobs failed or were cancelled."
+            exit 1
+          fi

.gitignore

@@ -1,5 +1,15 @@
 .DS_Store
 .idea/
+_ignore/
+recordings/
+test-logs-*
+
+# TypeScript / Node.js
+node_modules/
+dist/
+*.tsbuildinfo
+
+# Kotlin / JVM (archived)
 target/
 package/
 shinycannon.1
@@ -11,8 +21,4 @@ RELEASE_URLS.txt
 .rpmdb/
 .project
 .settings/
-_ignore/
 out/
-recordings/
-
-test-logs-*

.prettierrc

@@ -0,0 +1,21 @@
+{
+  "arrowParens": "always",
+  "bracketSameLine": false,
+  "bracketSpacing": true,
+  "embeddedLanguageFormatting": "auto",
+  "endOfLine": "lf",
+  "htmlWhitespaceSensitivity": "css",
+  "insertPragma": false,
+  "jsxSingleQuote": true,
+  "printWidth": 80,
+  "proseWrap": "preserve",
+  "quoteProps": "as-needed",
+  "requirePragma": false,
+  "semi": false,
+  "singleAttributePerLine": true,
+  "singleQuote": false,
+  "tabWidth": 2,
+  "trailingComma": "all",
+  "useTabs": false,
+  "vueIndentScriptAndStyle": false
+}

AGENTS.md

@@ -0,0 +1 @@
+CLAUDE.md

CLAUDE.md

@@ -0,0 +1,20 @@
+## About shinyloadtest
+
+`@posit-dev/shinyloadtest` — a TypeScript/Node.js CLI tool for loadtesting [Shiny apps](https://shiny.posit.co/).
+It is a rewrite and consolidation of [shinycannon](https://github.com/rstudio/shinycannon) (originally Kotlin/JVM) and the [shinyloadtest](https://rstudio.github.io/shinyloadtest) (R package and HTML/JavaScript assets).
+
+We forked `rstudio/shinycannon` into `posit-dev/shinyloadtest` for the rewrite.
+The original Kotlin source is in both repos; historical community issues and pull requests can be found in the original repo.
+
+## Organization notes
+
+- `packages/shinycannon/` — stub npm package so `npx shinycannon` resolves to this package/
+- `_dev/` — git-ignored development artifacts used to store specs, plans, notes, etc.
+
+## Key decisions
+
+- `shinycannon` CLI command is a backwards-compatible alias for `shinyloadtest replay`
+- `SHINYCANNON_*` env vars are accepted as fallbacks for `SHINYLOADTEST_*`
+- Per-session `tough-cookie` jars provide cookie isolation between workers
+- `AsyncQueue` in `websocket.ts` buffers inbound WS messages (capacity defined
+  in `types.ts`)