using include in tsconfig

Author: ychi

packages/jest-transform/src/ScriptTransformer.ts

@@ -273,7 +273,7 @@ export default class ScriptTransformer {
         return transformer;
       }
 
-      transform = require(transformPath);
+      transform = await import(transformPath);
 
       if (!transform) {
         throw new TypeError('Jest: a transform must export something.');

packages/jest-transform/tsconfig.json

@@ -1,13 +1,13 @@
 {
   "extends": "../../tsconfig.json",
   "compilerOptions": {
-    "rootDir": "src",
     "outDir": "build"
   },
   "references": [
     {"path": "../jest-haste-map"},
     {"path": "../jest-regex-util"},
     {"path": "../jest-types"},
     {"path": "../jest-util"}
-  ]
+  ],
+  "include": ["src/**/*", "package.json"], 
 }