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copilotkit__copilotkit/packages/react-core/package.json
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{
"name": "@copilotkit/react-core",
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"version": "1.61.2",
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"private": false,
"keywords": [
"ai",
"assistant",
"automation",
"copilot",
"copilotkit",
"javascript",
"nextjs",
"nodejs",
"react",
"tanstack-intent",
"textarea"
],
"homepage": "https://github.com/CopilotKit/CopilotKit",
"license": "MIT",
"repository": {
"type": "git",
"url": "https://github.com/CopilotKit/CopilotKit.git"
},
"files": [
"dist",
"skills"
],
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"type": "module",
"sideEffects": [
"**/*.css"
],
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"main": "./dist/index.cjs",
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"module": "./dist/index.mjs",
"types": "./dist/index.d.cts",
"unpkg": "./dist/index.umd.js",
"jsdelivr": "./dist/index.umd.js",
"exports": {
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".": {
"import": "./dist/index.mjs",
"require": "./dist/index.cjs"
},
"./v2": {
"import": "./dist/v2/index.mjs",
"require": "./dist/v2/index.cjs"
},
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"./package.json": "./package.json",
"./v2/context": {
"import": "./dist/v2/context.mjs",
"require": "./dist/v2/context.cjs"
},
"./v2/headless": {
"import": "./dist/v2/headless.mjs",
"require": "./dist/v2/headless.cjs"
},
"./v2/styles.css": "./dist/v2/index.css"
},
"publishConfig": {
"access": "public"
},
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"scripts": {
"build:css": "tailwindcss -i ./src/v2/styles/globals.css -o ./dist/v2/index.css -m && node scripts/scope-preflight.mjs ./dist/v2/index.css",
"build": "tsdown && pnpm run build:css",
"size": "size-limit",
"size:headline": "node scripts/measure-copilotchat.mjs",
"compat-check": "es-check es2022 --module 'dist/**/!(*.umd).{mjs,cjs,js}' && es-check es2020 'dist/**/*.umd.js'",
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"dev": "tsdown --watch",
"test": "vitest run && pnpm run test:scripts",
"test:scripts": "node --test scripts/__tests__/measure-copilotchat.test.mjs",
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"test:watch": "vitest",
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"check-types": "tsc --noEmit",
"link:global": "pnpm link --global",
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"unlink:global": "pnpm unlink --global",
"publint": "publint .",
"attw": "attw --pack . --profile node16 --ignore-rules internal-resolution-error"
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},
"dependencies": {
"@ag-ui/client": "0.0.57",
"@ag-ui/core": "0.0.57",
"@copilotkit/a2ui-renderer": "workspace:*",
"@copilotkit/core": "workspace:*",
"@copilotkit/runtime-client-gql": "workspace:*",
"@copilotkit/shared": "workspace:*",
"@copilotkit/web-components": "workspace:*",
"@copilotkit/web-inspector": "workspace:*",
"@jetbrains/websandbox": "^1.1.3",
"@lit-labs/react": "^2.0.2",
"@radix-ui/react-dropdown-menu": "^2.1.15",
"@radix-ui/react-slot": "^1.2.3",
"@radix-ui/react-tooltip": "^1.2.7",
"@scarf/scarf": "^1.3.0",
perf(react-core): add TanStack Virtual + two-phase animation measurement - Add @tanstack/react-virtual to react-core deps; activate useVirtualizer in CopilotChatMessageView when message count exceeds 50 (VIRTUALIZE_THRESHOLD). Only visible items are mounted; total scrollable height is maintained via an absolutely-positioned container div. - Add scroll-element-context.ts to pass the scroll container ref from CopilotChatView down to CopilotChatMessageView without circular imports. - Expose window.__perfScrollEl (scroll container) and window.__perfMsgCount (committed message count) for programmatic perf measurement. - Update /perf demo page with two-phase timing: phase 1 measures event emit time, phase 2 waits for all messages committed + scroll position stable (animation settled). PerfPanel now shows emit / render+anim / total. Benchmark results (MacBook, dev build): Load 50 [anim]: emit 305ms render+anim 1433ms total 1739ms Load 100 [anim]: emit 752ms render+anim 1578ms total 2331ms Load 500 [anim]: emit 14.2s render+anim 1783ms total 16.0s Load 50 [noAnim]: emit 299ms render+anim 182ms total 481ms Load 100 [noAnim]: emit 771ms render+anim 161ms total 931ms Load 500 [noAnim]: emit 13.9s render+anim 199ms total 14.1s Key findings: - React render cost is now O(1) in message count (161-199ms flat). Virtualization fully decouples DOM work from history size. - Animation (StickToBottom spring scroll-to-bottom) adds ~1.4-1.8s regardless of message count; this is a fixed cost on every history load. - The remaining bottleneck for large histories is event emit time (~5.6ms per TEXT_MESSAGE_CHUNK through AbstractAgent). This is upstream of React and tracked separately. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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"@tanstack/react-virtual": "^3.13.0",
"class-variance-authority": "^0.7.1",
"clsx": "^2.1.1",
"katex": "^0.16.22",
"lit": "^3.3.2",
"lucide-react": "^0.525.0",
"react-markdown": "^8.0.7",
"rxjs": "7.8.1",
"streamdown": "^1.3.0",
"tailwind-merge": "^3.3.1",
"tw-animate-css": "^1.3.5",
"untruncate-json": "^0.0.1",
"use-stick-to-bottom": "^1.1.1",
"zod-to-json-schema": "^3.24.5"
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},
"devDependencies": {
"@tailwindcss/cli": "^4.1.11",
"esbuild": "^0.27.0",
"@tailwindcss/postcss": "^4.1.11",
"@tailwindcss/typography": "^0.5.16",
"@tanstack/intent": "^0.0.29",
"@testing-library/jest-dom": "^6.0.0",
"@testing-library/react": "^16.3.0",
"@testing-library/react-hooks": "^8.0.1",
"@testing-library/user-event": "^14.0.0",
"@types/react": "^19.1.0",
"@types/react-dom": "^19.0.2",
"@valibot/to-json-schema": "^1.5.0",
"arktype": "^2.1.29",
"autoprefixer": "^10.4.20",
"concurrently": "^9.1.0",
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"eslint": "^8.56.0",
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"jsdom": "^26.1.0",
"phoenix": "^1.8.4",
"postcss": "^8.5.6",
"react": "^19.1.0",
"react-dom": "^19.2.0",
"tailwindcss": "^4.0.8",
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"tsconfig": "workspace:*",
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"tsdown": "^0.20.3",
"typescript": "^5.2.3",
"valibot": "^1.2.0",
"vitest": "^3.2.4",
"zod": ">=3.0.0"
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},
"peerDependencies": {
"react": "^18 || ^19 || ^19.0.0-rc",
"react-dom": "^18 || ^19 || ^19.0.0-rc",
"zod": ">=3.0.0"
}
}