diff --git a/CHANGELOG.md b/CHANGELOG.md
index d039d87a4441..fa44400ddb21 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 ### Chore & Maintenance
 
 - `[*]`: Setup building, linting and testing of TypeScript ([#7808](https://github.com/facebook/jest/pull/7808))
+- `[pretty-format]`: Migrate to TypeScript ([#7809](https://github.com/facebook/jest/pull/7809))
 
 ### Performance
 
diff --git a/scripts/build.js b/scripts/build.js
index 78d67bdbec5f..9afc50653ad6 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -196,9 +196,7 @@ function compileTypes(packages) {
     fs.existsSync(path.resolve(p, 'tsconfig.json'))
   );
 
-  if (packageWithTs.length > 0) {
-    execa.sync('tsc', ['-b', ...packageWithTs]);
-  }
+  execa.sync('tsc', ['-b', ...packageWithTs]);
 }
 
 if (files.length) {
diff --git a/scripts/watch.js b/scripts/watch.js
index b40d670643b5..d2ab88c9791a 100644
--- a/scripts/watch.js
+++ b/scripts/watch.js
@@ -61,9 +61,7 @@ const packageWithTs = packages.filter(p =>
   fs.existsSync(path.resolve(p, 'tsconfig.json'))
 );
 
-if (packageWithTs.length > 0) {
-  execa('tsc', ['-b', ...packageWithTs, '--watch']);
-}
+execa('tsc', ['-b', ...packageWithTs, '--watch']);
 
 setInterval(() => {
   const files = Array.from(filesToBuild.keys());