fix(testing): fix ts-jest migration (nrwl#3900)

Doginal · Nov 25, 2020 · 2596e14 · 2596e14
1 parent 5d86e8b
commit 2596e14
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/packages/jest/migrations.json b/packages/jest/migrations.json
@@ -54,6 +54,11 @@
       "version": "10.3.0-beta.1",
       "description": "Adds a jest extension to the recommended extensions for vscode",
       "factory": "./src/migrations/update-10-3-0/add-jest-extension"
+    },
+    "update-ts-jest": {
+      "version": "10.3.1-beta.1",
+      "description": "Fix ts-jest migration",
+      "factory": "./src/migrations/update-10-3-0/update-ts-jest"
     }
   },
   "packageJsonUpdates": {

diff --git a/packages/jest/src/migrations/update-10-3-0/update-ts-jest.ts b/packages/jest/src/migrations/update-10-3-0/update-ts-jest.ts
@@ -32,8 +32,11 @@ function updateAstTransformers(): Rule {
           join(appRootPath, target.options.jestConfig as string)
         );
 
-        if (!config.globals?.['ts-jest']?.astTransformers) {
-          return;
+        if (
+          !config.globals?.['ts-jest']?.astTransformers ||
+          !Array.isArray(config.globals?.['ts-jest']?.astTransformers)
+        ) {
+          continue;
         }
 
         try {