vitest.config.ts

import { availableParallelism } from "node:os";
import { resolve } from "node:path";
import { defineConfig } from "vitest/config";

const maxWorkers = Math.max(1, Math.min(8, availableParallelism() - 1));

export default defineConfig({
	test: {
		environment: "node",
		maxWorkers,
		include: [
			"src/**/*.test.ts",
			"src/**/*.test.tsx",
			"scripts/**/*.test.ts",
		],
		// DB tests require bun:sqlite — run with `bun run test:db` instead
		exclude: ["src/**/*.bun.test.ts", "scripts/**/*.bun.test.ts"],
		coverage: {
			provider: "v8",
			processingConcurrency: Math.min(4, maxWorkers),
			// The merge step creates the final text summary, JSON summary, and HTML report.
			reporter: ["json"],
			reportsDirectory: "coverage/vitest",
			include: ["src/**/*.{ts,tsx}", "src/server/ptyInputParser.cjs"],
			exclude: [
				"src/**/*.test.{ts,tsx}",
				"src/**/*.bun.test.ts",
				// Test-only helpers and vitest __mocks__ modules.
				"src/test/**",
				"src/**/__mocks__/**",
				"src/**/*.test-utils.ts",
				// Covered by the separate Bun test runner, which supports bun:sqlite.
				"src/db/**",
				// These modules now use Bun-native APIs and are covered in the Bun lane.
				"src/lib/frontmatter.ts",
				"src/lib/updates.ts",
				"src/lib/vault.ts",
				"src/server/skillImports.ts",
				"src/server/skillInstalls.ts",
				"src/server/skillPackage.ts",
				// Generated or embedded artifacts are not authored coverage targets.
				"src/routeTree.gen.ts",
				"src/server/codexProtocol/**",
				"src/server/embedded-client.ts",
			],
			// Initial floor measured 2026-07-10: S 43.30, B 36.53, F 35.26, L 44.40.
			// Keep a small cross-platform margin and ratchet these values upward.
			thresholds: {
				statements: 42,
				branches: 35,
				functions: 34,
				lines: 43,
			},
		},
	},
	resolve: {
		alias: {
			"#": resolve(import.meta.dirname, "src"),
			"@": resolve(import.meta.dirname, "src"),
		},
	},
});