Delete preset from require cache to allow multiple projects

jestjs · May 16, 2018 · fb62732 · fb62732
1 parent 161dc5e
commit fb62732
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/packages/jest-config/src/normalize.js b/packages/jest-config/src/normalize.js
@@ -76,6 +76,13 @@ const setupPreset = (
   try {
     // $FlowFixMe
     preset = (require(presetModule): InitialOptions);
+
+    // Force re-evaluation to support multiple projects
+    try {
+      if (presetModule) {
+        delete require.cache[require.resolve(presetModule)];
+      }
+    } catch (e) {}
   } catch (error) {
     if (error instanceof SyntaxError) {
       throw createConfigError(