diff --git a/api/package.json b/api/package.json
index ed227071..84bb1e73 100644
--- a/api/package.json
+++ b/api/package.json
@@ -46,6 +46,7 @@
         "compile:esm": "tsc -b ./tsconfig.esm.json && mve out/esm/main.js out/esm/main.mjs && node -e \"require('fs').writeFileSync('out/esm/package.json', '{\\\"type\\\":\\\"module\\\"}')\"",
         "compile:cjs": "tsc -b ./tsconfig.cjs.json && mve out/cjs/main.js out/cjs/main.cjs",
         "clean": "node -e \"const fs = require('fs'); fs.rmSync('./out', { recursive: true, force: true });\"",
+        "test": "npm run test:package",
         "test:package": "node ./scripts/test-package.cjs"
     },
     "devDependencies": {
diff --git a/api/scripts/test-package.cjs b/api/scripts/test-package.cjs
index 7feb1180..24f51096 100644
--- a/api/scripts/test-package.cjs
+++ b/api/scripts/test-package.cjs
@@ -55,7 +55,8 @@ try {
         testRoot,
     );
 
-    const typescriptCli = path.join(packageRoot, 'node_modules', 'typescript', 'bin', 'tsc');
+    const packageRequire = createRequire(path.join(packageRoot, 'package.json'));
+    const typescriptCli = packageRequire.resolve('typescript/bin/tsc');
     const fixtureRoot = path.join(packageRoot, 'test');
 
     for (const consumer of [
diff --git a/api/test/tsconfig.legacy.json b/api/test/tsconfig.legacy.json
index cd09c6f5..6089326f 100644
--- a/api/test/tsconfig.legacy.json
+++ b/api/test/tsconfig.legacy.json
@@ -5,7 +5,9 @@
         "moduleResolution": "Node",
         "noEmit": true,
         "strict": true,
-        "skipLibCheck": false
+        "skipLibCheck": false,
+        "types": ["node", "vscode"],
+        "typeRoots": ["../node_modules/@types"]
     },
     "include": ["consumer.ts"]
 }
diff --git a/api/test/tsconfig.modern.json b/api/test/tsconfig.modern.json
index 1994e56c..876a0dce 100644
--- a/api/test/tsconfig.modern.json
+++ b/api/test/tsconfig.modern.json
@@ -5,7 +5,9 @@
         "moduleResolution": "NodeNext",
         "noEmit": true,
         "strict": true,
-        "skipLibCheck": false
+        "skipLibCheck": false,
+        "types": ["node", "vscode"],
+        "typeRoots": ["../node_modules/@types"]
     },
     "include": ["consumer.ts"]
 }