feat(angular): add migration to set isolateModules: true to jest tsconfig files#33889
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leosvelperez merged 1 commit intomasterfrom Dec 16, 2025
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Current Behavior
When upgrading to Angular 21 with Jest, users may encounter TypeScript compilation issues because their
tsconfig.spec.jsonfiles don't haveisolatedModules: trueset, which is required for compatibility with Jest andjest-preset-angular.Expected Behavior
After running
nx migrate, Angular projects using Jest will automatically haveisolatedModules: trueadded to theirtsconfig.spec.jsonfiles (or custom test tsconfig files referenced by@nx/jest:jesttasks) if not already set or inherited from a parent tsconfig.