chore: stricter typechecks

package.json

@@ -42,7 +42,8 @@
     "lint:fix": "eslint --fix . && prettier -w src lib test stubs",
     "prepack": "pnpm build",
     "release": "pnpm build && pnpm test && changelogen --release --prerelease --push --publish --publishTag 2x",
-    "test": "pnpm lint && vitest run --coverage && pnpm test:register && pnpm test:bun",
+    "test": "pnpm lint && pnpm test:types && vitest run --coverage && pnpm test:register && pnpm test:bun",
+    "test:types": "tsc --noEmit",
     "test:register": "node ./test/register-test.mjs",
     "test:bun": "bun --bun test test/bun"
   },

src/babel.ts

@@ -3,7 +3,7 @@ import type {
   TransformOptions as BabelTransformOptions,
   PluginItem,
 } from "@babel/core";
-import { TransformOptions, TransformResult } from "./types";
+import type { TransformOptions, TransformResult } from "./types";
 import { TransformImportMetaPlugin } from "./plugins/babel-plugin-transform-import-meta";
 import { importMetaEnvPlugin } from "./plugins/import-meta-env";
 import transformModulesPlugin from "./plugins/transform-module";

src/utils.ts

@@ -4,7 +4,7 @@ import { isAbsolute, join } from "pathe";
 import type { PackageJson } from "pkg-types";
 import { interopDefault as mllyInteropDefault, pathToFileURL } from "mlly";
 import { isWindows } from "std-env";
-import { Context } from "./types";
+import type { Context } from "./types";
 import { gray, green, blue, yellow, cyan, red } from "yoctocolors";
 
 export function isDir(filename: string | URL): boolean {

test/__snapshots__/fixtures.test.ts.snap

@@ -89,7 +89,7 @@ Decorator called with 1 arguments.
   file: '<cwd>/test.ts',
   dir: '<cwd>',
   resolve: '<cwd>/test.ts'
-} undefined [class DecoratedClass]
+} [class DecoratedClass]
 {
   satisfiesTest: {
     firstTest: { name: 'first', avatar: 'https://example.com/first.png' },

test/fixtures/json/index.ts

@@ -4,7 +4,7 @@ import importedWithAssertion from "./file.json" assert { type: "json" };
 
 const required = require("./file.json");
 
-const debug = (label: string, value) =>
+const debug = (label: string, value: any) =>
   console.log(label, ":", value, ".default:", value.default);
 
 debug("Imported", imported);

test/fixtures/typescript/index.ts

@@ -1,10 +1,10 @@
-import test, { FeedService } from "./test";
+import test, { type FeedService as _FeedService } from "./test";
 import Clazz from "./decorators";
 import { test as satisfiesTest } from "./satisfies";
 import { child } from "./parent.mjs";
 
 export type { Test } from "./types";
 
-console.log(test(), FeedService, Clazz);
+console.log(test(), Clazz);
 console.log(satisfiesTest());
 console.log(child());

tsconfig.json

@@ -1,14 +1,21 @@
 {
   "compilerOptions": {
-    "target": "ES2022",
-    "module": "ESNext",
-    "moduleResolution": "Node",
+    "target": "ESNext",
+    "module": "Preserve",
+    "resolveJsonModule": true,
+    "esModuleInterop": false,
     "allowSyntheticDefaultImports": true,
+    "skipLibCheck": true,
+    "allowJs": true,
+    "checkJs": false,
     "strict": true,
-    "declaration": false,
-    "experimentalDecorators": true,
-    "resolveJsonModule": true,
-    "types": ["node"]
+    "verbatimModuleSyntax": true,
+    "isolatedModules": true,
+    "forceConsistentCasingInFileNames": true,
+    "noImplicitOverride": true,
+    "noEmit": true,
+    "experimentalDecorators": true
   },
-  "include": ["src", "lib"]
+  "include": ["src", "lib", "test"],
+  "exclude": ["test/fixtures/error-parse/index.ts"]
 }