chore: update test types npm script and CI job

.github/workflows/ci.yml

@@ -70,6 +70,9 @@ jobs:
                   npm install
                   npm run build
 
+            - name: Run TypeScript Compiler
+              run: npx tsc
+
             - name: Test types (core)
               working-directory: packages/core
               run: |

package.json

@@ -13,7 +13,7 @@
     "fmt": "prettier --write .",
     "fmt:check": "prettier --check .",
     "test:jsr": "npm run test:jsr --workspaces --if-present",
-    "test:types": "tsc"
+    "test:types": "tsc && npm run test:types --workspaces --if-present"
   },
   "workspaces": [
     "packages/*"

packages/migrate-config/src/migrate-config-cli.js

@@ -23,6 +23,7 @@
 import fsp from "node:fs/promises";
 import path from "node:path";
 import { migrateConfig, migrateJSConfig } from "./migrate-config.js";
+// @ts-ignore: No types available
 import { Legacy } from "@eslint/eslintrc";
 
 //-----------------------------------------------------------------------------

packages/migrate-config/src/migrate-config.js

@@ -8,6 +8,7 @@
 //-----------------------------------------------------------------------------
 
 import * as recast from "recast";
+// @ts-ignore: No types available
 import { Legacy } from "@eslint/eslintrc";
 import camelCase from "camelcase";
 import pluginsNeedingCompat from "./compat-plugins.js";