separate typecheck from runtime testing

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         node: ["latest"]
-        typescript: ["5.0", "next"]
+        typescript: ["latest", "next"]
     name: Test with TypeScript ${{ matrix.typescript }} on Node ${{ matrix.node }}
     steps:
       - uses: actions/checkout@v4

experiments/oops.ts

@@ -1,3 +1,5 @@
+// @ts-nocheck
+
 // a less object-oriented approach
 
 interface ZodDef {

experiments/replacer.ts

@@ -1,3 +1,5 @@
+// @ts-nocheck
+
 import type { z } from "../packages/zod/src/index";
 
 type Tagged = z.ZodType & { _tag: string };

package.json

@@ -37,7 +37,7 @@
     "tslib": "^2.3.1",
     "tsx": "^4.15.4",
     "typescript": "5.5.3",
-    "vitest": "^1.6.0"
+    "vitest": "2.0.3"
   },
   "lint-staged": {
     "src/*.ts": ["biome format --write", "biome lint --apply"],

packages/zod/tests/types.test-d.ts

@@ -0,0 +1,3 @@
+import { z } from "../src/index";
+
+z;

packages/zod/vitest.config.ts

@@ -1,4 +1,4 @@
-import { defineConfig, mergeConfig } from "vitest/config";
+import { defineProject, mergeConfig } from "vitest/config";
 import rootConfig from "../../vitest.root";
 
-export default mergeConfig(rootConfig, defineConfig({})) as object;
+export default mergeConfig(rootConfig, defineProject({})) as object;

vitest.root.ts

@@ -2,13 +2,11 @@ import { type UserConfig, defineConfig } from "vitest/config";
 
 export default defineConfig({
   test: {
-    include: ["**/*.test.ts"],
-    isolate: false,
     watch: false,
+    isolate: false,
     typecheck: {
       enabled: true,
-      ignoreSourceErrors: true,
-      include: ["**/*.test.ts"],
+      ignoreSourceErrors: false,
     },
   },
 }) as UserConfig;

vitest.workspace.ts

@@ -1 +1 @@
-export default ["packages/*"] as [string];
+export default ["packages/*"] as string[];