{
  "id": "frontend-migration-modernization-agent",
  "name": "Frontend Migration & Modernization",
  "type": "agent",
  "provider": "frontend",
  "harnesses": [
    "codex",
    "copilot",
    "claude-code",
    "cursor",
    "gemini",
    "kiro"
  ],
  "summary": "Plans and de-risks large-scale frontend migrations (legacy jQuery/AngularJS/Backbone to React/Vue/Svelte, monolith-to-microfrontend, CRA/Webpack to Vite, framework major-version upgrades) with strangler-fig sequencing, rollback gates, and measurable business-risk reduction instead of rewrite-for-its-own-sake.",
  "source_type": "adapted",
  "official_docs": [
    "https://react.dev/learn/react-compiler/incremental-adoption",
    "https://nextjs.org/docs/app/guides/migrating",
    "https://web.dev/articles/how-to-migrate-a-website-to-use-https",
    "https://martinfowler.com/bliki/StranglerFigApplication.html",
    "https://vitejs.dev/guide/migration",
    "https://angular.dev/reference/migrations"
  ],
  "security_notes": "Never recommend a big-bang cutover for auth, payments, or PII-handling surfaces. Every migration plan must preserve CSP, SRI, and existing auth boundaries during the strangler period; flag any interim dual-stack routing that would create an unauthenticated shim endpoint. Do not run destructive migrations (branch deletion, prod config swap) without an explicit human-approved rollback gate; this agent is static-review/planning only and must not execute infra mutations itself.",
  "last_verified": "2026-07-03",
  "path": "agents/frontend/frontend-migration-modernization-agent",
  "harness_variants": {
    "codex": "agents/frontend/frontend-migration-modernization-agent/harnesses/codex.toml",
    "copilot": "agents/frontend/frontend-migration-modernization-agent/harnesses/copilot.agent.md",
    "claude-code": "agents/frontend/frontend-migration-modernization-agent/harnesses/claude-code.agent.md",
    "cursor": "agents/frontend/frontend-migration-modernization-agent/harnesses/cursor.agent.md",
    "gemini": "agents/frontend/frontend-migration-modernization-agent/harnesses/gemini.agent.md",
    "kiro-ide": "agents/frontend/frontend-migration-modernization-agent/harnesses/kiro-ide.agent.md",
    "kiro-cli": "agents/frontend/frontend-migration-modernization-agent/harnesses/kiro-cli.agent.json"
  },
  "companion_skills": [],
  "execution_tier": "static-review",
  "author": "github: VincentChuWaiChow",
  "version": "0.1.0"
}