feat: Update Vitest configuration across packages and add shared base config

Author: Marvin Zhang

package.json

@@ -7,9 +7,13 @@
     "build:test": "pnpm --filter @devlog/ai build && pnpm --filter @devlog/core build && pnpm --filter @devlog/web build:test",
     "start": "pnpm --filter @devlog/mcp start",
     "dev": "pnpm --filter @devlog/mcp dev",
-    "test": "pnpm -r test",
-    "test:watch": "pnpm -r test:watch",
-    "test:coverage": "pnpm --filter @devlog/mcp test -- --coverage",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "test:ui": "vitest --ui",
+    "test:coverage": "vitest run --coverage",
+    "test:packages": "pnpm -r test",
+    "test:watch:packages": "pnpm -r test:watch",
+    "test:coverage:packages": "pnpm -r test -- --coverage",
     "test:integration": "pnpm --filter @devlog/mcp test:integration",
     "clean": "pnpm -r clean && rm -f *.tsbuildinfo",
     "install-all": "pnpm install",
@@ -45,7 +49,8 @@
     "husky": "9.1.7",
     "lint-staged": "16.1.2",
     "prettier": "3.6.1",
-    "typescript": "^5.0.0"
+    "typescript": "^5.0.0",
+    "vitest": "^2.1.9"
   },
   "engines": {
     "node": ">=18",

packages/ai/vitest.config.ts

@@ -1,9 +1,12 @@
-import { defineConfig } from 'vitest/config';
+import { defineConfig, mergeConfig } from 'vitest/config';
+import { baseConfig } from '../../vitest.config.base.js';
 
-export default defineConfig({
-  test: {
-    globals: true,
-    environment: 'node',
-    passWithNoTests: true,
-  },
-});
+export default defineConfig(
+  mergeConfig(baseConfig, {
+    // AI-specific overrides
+    test: {
+      // AI package might not have tests yet, so pass with no tests
+      passWithNoTests: true,
+    },
+  }),
+);

packages/core/vitest.config.ts

@@ -1,13 +1,16 @@
-import { defineConfig } from 'vitest/config';
+import { defineConfig, mergeConfig } from 'vitest/config';
+import { baseConfig } from '../../vitest.config.base.js';
 
-export default defineConfig({
-  test: {
-    environment: 'node',
-    globals: true,
-    testTimeout: 30000,
-    // Handle dynamic imports better
-    deps: {
-      external: ['better-sqlite3'],
+export default defineConfig(
+  mergeConfig(baseConfig, {
+    // Core-specific overrides
+    test: {
+      // Handle dynamic imports better for core package
+      deps: {
+        external: ['better-sqlite3'],
+      },
+      // Keep the existing timeout since core has longer-running tests
+      testTimeout: 30000,
     },
-  },
-});
+  }),
+);

packages/mcp/vitest.config.ts

@@ -1,19 +1,13 @@
-import { defineConfig } from 'vitest/config';
+import { defineConfig, mergeConfig } from 'vitest/config';
+import { baseConfig } from '../../vitest.config.base.js';
 
-export default defineConfig({
-  test: {
-    globals: true,
-    environment: 'node',
-    include: ['src/**/*.test.ts', 'tests/**/*.test.ts'],
-    exclude: ['node_modules', 'build'],
-    coverage: {
-      provider: 'v8',
-      reporter: ['text', 'json', 'html'],
-      exclude: [
-        'node_modules/',
-        'build/',
-        'src/test.ts', // Keep the old integration test file
-      ],
+export default defineConfig(
+  mergeConfig(baseConfig, {
+    // MCP-specific overrides
+    test: {
+      // Add any MCP-specific test configuration here
+      // For example, if you need different timeout:
+      // testTimeout: 45000,
     },
-  },
-});
+  }),
+);

pnpm-lock.yaml

@@ -0,0 +1,48 @@
+import { defineConfig } from 'vitest/config';
+import type { ViteUserConfig as UserConfig } from 'vitest/config';
+
+/**
+ * Shared Vitest configuration for all packages in the monorepo
+ */
+export const baseConfig: UserConfig = {
+  test: {
+    globals: true,
+    environment: 'node',
+    include: ['src/**/*.test.ts', 'tests/**/*.test.ts'],
+    exclude: ['node_modules', 'build', 'dist'],
+    testTimeout: 30000,
+    coverage: {
+      provider: 'v8',
+      reporter: ['text', 'json', 'html'],
+      include: [
+        'src/**/*.ts', // Include all source files
+        'app/**/*.ts', // Include app-specific files
+      ],
+      exclude: [
+        'node_modules/',
+        'build/',
+        'dist/',
+        'src/__tests__/**', // Exclude test files from coverage
+        'src/types/**', // Exclude type definitions
+        '**/index.ts', // Exclude barrel export files
+        '**/*.d.ts', // Exclude TypeScript declaration files
+        'src/config/**', // Configuration files
+        'tmp/**', // Temporary files
+      ],
+      // Coverage thresholds (can be overridden per package)
+      thresholds: {
+        global: {
+          branches: 60,
+          functions: 60,
+          lines: 60,
+          statements: 60
+        }
+      }
+    },
+  },
+};
+
+/**
+ * Default configuration that can be used by packages
+ */
+export default defineConfig(baseConfig);

vitest.config.base.ts

@@ -0,0 +1,14 @@
+import { defineWorkspace } from 'vitest/config';
+
+/**
+ * Vitest workspace configuration for the devlog monorepo
+ * This allows running tests across all packages from the root
+ */
+export default defineWorkspace([
+  // Include all packages with tests
+  'packages/core',
+  'packages/mcp', 
+  'packages/ai',
+  // Add web package when it gets tests
+  // 'packages/web',
+]);