feat(cli): Add Rust CLI for schema generation with watch mode

Major rewrite of the schema generation system from TypeScript to Rust,
providing significant performance improvements and a standalone CLI tool.

Key changes:
- Add Rust CLI with generate and watch subcommands
- Migrate to tRPC v11 APIs
- Add comprehensive test suite (unit, integration, E2E, snapshots)
- Add benchmark infrastructure with Criterion
- Improve error handling with miette diagnostics
- Add dry-run mode with diff preview
- Update documentation and migration guides
- Fix CI workflow for Rust toolchain and test runner

Author: KevinEdry

.github/workflows/verify.yml

@@ -5,7 +5,7 @@ on:
     branches:
       - main
   pull_request:
-    types: [opened, reopened]
+    types: [opened, reopened, synchronize]
 
 jobs:
   verify:
@@ -17,13 +17,91 @@ jobs:
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           submodules: false
-      - name: Enable Corepack
-        run: corepack enable
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
       - name: Install dependencies
-        run: yarn install --frozen-lockfile
+        run: bun install --frozen-lockfile
       - name: Lint
-        run: yarn lint --no-fix
+        run: bun run lint --no-fix
       - name: Test
-        run: yarn test
+        run: bun run test
       - name: Build
-        run: yarn build
+        run: bun run build
+
+  verify-rust-cli:
+    runs-on: ubuntu-latest
+    name: verify-rust-cli
+    defaults:
+      run:
+        working-directory: packages/nestjs-trpc/cli
+    steps:
+      - name: Checkout the repo
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          submodules: false
+      - name: Setup Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: stable
+          components: rustfmt, clippy
+          cache-workspaces: packages/nestjs-trpc/cli -> target
+      - name: Check formatting
+        run: cargo fmt --check
+      - name: Run clippy
+        run: cargo clippy --all-targets --all-features -- -D warnings
+      - name: Run tests
+        run: cargo test
+      - name: Build
+        run: cargo build --release
+      - name: Check file sizes
+        run: ./scripts/check-line-count.sh
+
+  e2e-tests:
+    runs-on: ubuntu-latest
+    name: e2e-tests
+    needs: [verify, verify-rust-cli]
+    steps:
+      - name: Checkout the repo
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          submodules: false
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+      - name: Setup Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: stable
+          cache-workspaces: packages/nestjs-trpc/cli -> target
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+      - name: Build library
+        run: bun run build
+      - name: Build Rust CLI
+        working-directory: packages/nestjs-trpc/cli
+        run: cargo build --release
+      - name: Generate types for Express example
+        working-directory: examples/nestjs-express
+        run: |
+          mkdir -p src/@generated
+          ../../packages/nestjs-trpc/cli/target/release/nestjs-trpc generate \
+            --entrypoint ./src/user.router.ts \
+            --output ./src/@generated/server.ts
+      - name: Verify Express generated file exists
+        run: test -s examples/nestjs-express/src/@generated/server.ts
+      - name: Generate types for Fastify example
+        working-directory: examples/nestjs-fastify
+        run: |
+          mkdir -p src/@generated
+          ../../packages/nestjs-trpc/cli/target/release/nestjs-trpc generate \
+            --entrypoint ./src/user.router.ts \
+            --output ./src/@generated/server.ts
+      - name: Verify Fastify generated file exists
+        run: test -s examples/nestjs-fastify/src/@generated/server.ts
+      - name: Run E2E tests (Express)
+        working-directory: examples/nestjs-express
+        run: bun run test:e2e
+      - name: Run E2E tests (Fastify)
+        working-directory: examples/nestjs-fastify
+        run: bun run test:e2e

.gitignore

@@ -33,4 +33,27 @@ test/**/dist
 !.yarn/plugins
 !.yarn/releases
 !.yarn/sdks
-!.yarn/versions
+!.yarn/versions
+
+# Rust CLI (packages/nestjs-trpc/cli)
+**/target/
+**/*.rs.bk
+
+# Development tools
+.auto-claude/
+.worktrees/
+.claude/
+.planning/
+
+# Native binaries
+packages/nestjs-trpc/native/
+
+# Generated/build artifacts
+packages/nestjs-trpc/cli/@generated/
+**/*.rlib
+
+# Compiled test files
+examples/**/test/**/*.js
+examples/**/test/**/*.js.map
+examples/**/test/**/*.d.ts
+examples/**/test/**/*.d.ts.map

.husky/commit-msg

@@ -1 +1 @@
-yarn commitlint -c --config .commitlintrc.json -E --edit
+bun run commitlint -c --config .commitlintrc.json -E --edit

.husky/pre-commit

@@ -1 +1 @@
-yarn lint-staged
+bun run lint-staged

.prettierignore

@@ -4,4 +4,5 @@ docs/
 public/
 *.md
 *.mdx
-packages/**/__tests__/*.ts
+packages/**/__tests__/*.ts
+packages/nestjs-trpc/cli/tests/fixtures/

.yarnrc.yml

@@ -1,5 +1,36 @@
 # Changelog
 
+## [2.0.0] - UNRELEASED
+
+### BREAKING CHANGES
+
+#### tRPC v11 Required
+- **Minimum tRPC version**: `@trpc/server@^11.0.0` is now required
+- If using data transformers, move them to link configuration (see [migration guide](/docs/migration/v10-to-v11))
+
+#### TypeScript Generator Removed
+- **Code generation**: Now handled exclusively by Rust CLI
+- **Removed**: `TRPCGenerator` class and `autoSchemaFile` option
+- **Removed**: `ts-morph` dependency
+- **Migration**: Use `npx nestjs-trpc generate` instead (see [migration guide](/docs/migration/typescript-to-rust-cli))
+
+#### ImportsScanner Removed
+- **Internal change**: `ImportsScanner` class removed (was internal, should not affect users)
+
+### Added
+
+- **Watch mode**: `npx nestjs-trpc watch` for automatic regeneration on file changes
+- **Better error messages**: Rich diagnostics with file paths and line numbers
+- **Faster generation**: Rust-based CLI is 10-50x faster than TypeScript generator
+
+### Changed
+
+- **Internal**: Router construction uses plain objects instead of explicit `router()` calls (tRPC v11 shorthand)
+
+### Fixed
+
+- Various parser edge cases for complex Zod schemas
+
 ## <small>1.6.1 (2024-10-30)</small>
 
 ## 1.6.0 (2024-10-30)