1 files changed, 5 insertions, 7 deletions
diff --git a/packages/monorepo-scripts/src/test_installation.ts b/packages/monorepo-scripts/src/test_installation.ts
index be39b1878..a642498ac 100644
--- a/packages/monorepo-scripts/src/test_installation.ts
+++ b/packages/monorepo-scripts/src/test_installation.ts
@@ -104,13 +104,10 @@ async function testInstallPackageAsync(
     const packageName = installablePackage.packageJson.name;
     utils.log(`Testing ${packageName}@${lastChangelogVersion}`);
     const packageDirName = path.join(...(packageName + '-test').split('/'));
-    const testDirectory = path.join(
-        monorepoRootPath,
-        'packages',
-        'monorepo-scripts',
-        '.installation-test',
-        packageDirName,
-    );
+    // NOTE(fabio): The `testDirectory` needs to be somewhere **outside** the monorepo root directory.
+    // Otherwise, it will have access to the hoisted `node_modules` directory and the Typescript missing
+    // type errors will not be caught.
+    const testDirectory = path.join(monorepoRootPath, '..', '.installation-test', packageDirName);
     await rimrafAsync(testDirectory);
     await mkdirpAsync(testDirectory);
     await execAsync('yarn init --yes', { cwd: testDirectory });
@@ -132,6 +129,7 @@ async function testInstallPackageAsync(
             noImplicitReturns: true,
             pretty: true,
             strict: true,
+            resolveJsonModule: true,
         },
         include: ['index.ts'],
     };