Commits on Sep 21, 2022

1. perf(compiler-cli): cache source file for reporting type-checking dia… …

   …gnostics
   
   When reporting type-checking diagnostics in external templates we create a
   `ts.SourceFile` of the template text, as this is needed to report Angular
   template diagnostics using TypeScript's diagnostics infrastructure. Each
   reported diagnostic would create its own `ts.SourceFile`, resulting in
   repeatedly parsing of the template text and potentially high memory usage
   if the template is large and there are many diagnostics reported. This commit
   caches the parsed template in the template mapping, such that all reported
   diagnostics get to reuse the same `ts.SourceFile`.
   
   Closes angular#47470

   

   JoostK committed Sep 21, 2022
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