9e70bcb34f
When ngcc is compiling an entry-point, it uses a `ReflectionHost` that is specific to its format, e.g. ES2015, ES5, UMD or CommonJS. During the compilation of that entry-point however, the reflector may be used to reflect into external libraries using their declaration files. Up until now this was achieved by letting all `ReflectionHost` classes consider their parent class for reflector queries, thereby ending up in the `TypeScriptReflectionHost` that is a common base class for all reflector hosts. This approach has proven to be prone to bugs, as failing to call into the base class would cause incompatibilities with reading from declaration files. The observation can be made that there's only two distinct kinds of reflection host queries: 1. the reflector query is about code that is part of the entry-point that is being compiled, or 2. the reflector query is for an external library that the entry-point depends on, in which case the information is reflected from the declaration files. The `ReflectionHost` that was chosen for the entry-point should serve only reflector queries for the first case, whereas a regular `TypeScriptReflectionHost` should be used for the second case. This avoids the problem where a format-specific `ReflectionHost` fails to handle the second case correctly, as it isn't even considered for such reflector queries. This commit introduces a `ReflectionHost` that delegates to the `TypeScriptReflectionHost` for AST nodes within declaration files, otherwise delegating to the format-specific `ReflectionHost`. Fixes #35078 Resolves FW-1859 PR Close #36089 |
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