Fix jest ts-jest config warning (jpmorganchase#2281)

* Fix jest ts-jest config warning

* changeset

Author: AlbertoBrusa

.changeset/hot-goats-sleep.md

@@ -0,0 +1,5 @@
+---
+'modular-scripts': patch
+---
+
+Fixed configuration of ts-jest under `globals` deprecated warning

packages/modular-scripts/src/test/config.ts

@@ -58,7 +58,13 @@ export function createJestConfig(
           presets: [require.resolve('babel-preset-react-app')],
         },
       ],
-      '^.+\\.(ts|tsx)$': require.resolve('ts-jest'),
+      // don't typecheck tests in CI
+      '^.+\\.(ts|tsx)$': isCi
+        ? [
+            require.resolve('ts-jest'),
+            { diagnostics: false, isolatedModules: true },
+          ]
+        : require.resolve('ts-jest'),
       '^.+\\.(css|scss)$': require.resolve('jest-transform-stub'),
       '.+\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
         require.resolve('jest-transform-stub'),
@@ -199,15 +205,5 @@ export function createJestConfig(
     });
   }
 
-  // don't typecheck tests in CI
-  if (isCi) {
-    jestConfig.globals = {
-      'ts-jest': {
-        diagnostics: false,
-        isolatedModules: true,
-      },
-    };
-  }
-
   return jestConfig;
 }