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Previously, while trying to build an `NgccReflectionHost`'s `privateDtsDeclarationMap`, `computePrivateDtsDeclarationMap()` would try to collect exported declarations from all source files of the program (i.e. without checking whether they were within the target package, as happens for declarations in `.d.ts` files). Most of the time, that would not be a problem, because external packages would be represented as `.d.ts` files in the program. But when an external package had no typings, the JS files would be used instead. As a result, the `ReflectionHost` would try to (unnecessarilly) parse the file in order to extract exported declarations, which in turn would be harmless in most cases. There are certain cases, though, where the `ReflectionHost` would throw an error, because it cannot parse the external package's JS file. This could happen, for example, in `UmdReflectionHost`, which expects the file to contain exactly one statement. See #34544 for more details on a real-world failure. This commit fixes the issue by ensuring that `computePrivateDtsDeclarationMap()` will only collect exported declarations from files within the target package. Jira issue: [FW-1794](https://angular-team.atlassian.net/browse/FW-1794) Fixes #34544 PR Close #34811 |
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Angular
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages.
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