if process.features.typescript is set, load jest.config.ts withou…

…t external loader see https://nodejs.org/api/process.html#processfeaturestypescript This value is set if node is run with `--experimental-transform-types` or `--experimental-strip-types` so no external package is required for transpilation in those cases
jestjs · Jan 28, 2025 · 248c584 · 248c584
1 parent 7ea9a40
commit 248c584
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/jest-config/src/readConfigFileAndSetRootDir.ts b/packages/jest-config/src/readConfigFileAndSetRootDir.ts
@@ -39,7 +39,7 @@ export default async function readConfigFileAndSetRootDir(
   let configObject;
 
   try {
-    if (isTS) {
+    if (isTS && !process.features.typescript) {
       configObject = await loadTSConfigFile(configPath);
     } else if (isJSON) {
       const fileContent = fs.readFileSync(configPath, 'utf8');