fix(region-info): standalone use of @aws-cdk/region-info throws an Cannot find module 'aws-cdk-lib/core/lib/errors' error#36414
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Introduce a local `RegionFactError` class that uses `CONSTRUCT_ERROR_SYMBOL` instead of importing `UnscopedValidationError` from an internal aws-cdk-lib path. This allows `@aws-cdk/region-info` to work standalone without requiring `aws-cdk-lib` as a runtime dependency while maintaining typed error support.
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@aws-cdk/region-info throws an Cannot find module 'aws-cdk-lib/core/lib/errors' error
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Issue # (if applicable)
Closes #36399.
Reason for this change
The
@aws-cdk/region-infopackage importsUnscopedValidationErrorfrom an internalaws-cdk-libpath (aws-cdk-lib/core/lib/errors). Sinceaws-cdk-libis only a devDependency, users installing@aws-cdk/region-infostandalone get a "Cannot find module" error when using the package.Description of changes
Introduce a local
RegionFactErrorclass that:Errorand usesCONSTRUCT_ERROR_SYMBOLfor typed error detection viaErrors.isConstructError()nameto'RegionFactError'for consistent error presentation to usersaws-cdk-lib/core/lib/errorsimportAlso adds an ESLint rule to
region-info/lib/that prevents imports from../../*paths, ensuring this issue cannot regress.Describe any new or updated permissions being added
N/A
Description of how you validated changes
aws-cdk-libsuccessfullyregion-infotests in bothaws-cdk-liband@aws-cdk/region-infopackagesChecklist
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license