Include static.ts in upgrade module #2
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JaredNeil
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Apr 4, 2019
Previously the ngfactory shim generator in ngtsc would always write two imports in the factory file shims: 1) an import to @angular/core 2) an import to the base file If the base file has no exports, import #2 would be empty. This turns out to cause issues downstream. This commit changes the generated shim so if there are no exports in the base file, the generated shim is empty too. PR Close angular#27470
DavidANeil
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May 22, 2020
…ular#36211) This optimization builds on a lot of prior work to finally make type- checking of templates incremental. Incrementality requires two main components: - the ability to reuse work from a prior compilation. - the ability to know when changes in the current program invalidate that prior work. Prior to this commit, on every type-checking pass the compiler would generate new .ngtypecheck files for each original input file in the program. 1. (Build #1 main program): empty .ngtypecheck files generated for each original input file. 2. (Build #1 type-check program): .ngtypecheck contents overridden for those which have corresponding components that need type-checked. 3. (Build #2 main program): throw away old .ngtypecheck files and generate new empty ones. 4. (Build #2 type-check program): same as step 2. With this commit, the `IncrementalDriver` now tracks template type-checking _metadata_ for each input file. The metadata contains information about source mappings for generated type-checking code, as well as some diagnostics which were discovered at type-check analysis time. The actual type-checking code is stored in the TypeScript AST for type-checking files, which is now re-used between programs as follows: 1. (Build #1 main program): empty .ngtypecheck files generated for each original input file. 2. (Build #1 type-check program): .ngtypecheck contents overridden for those which have corresponding components that need type-checked, and the metadata registered in the `IncrementalDriver`. 3. (Build #2 main program): The `TypeCheckShimGenerator` now reuses _all_ .ngtypecheck `ts.SourceFile` shims from build #1's type-check program in the construction of build #2's main program. Some of the contents of these files might be stale (if a component's template changed, for example), but wholesale reuse here prevents unnecessary changes in the contents of the program at this point and makes TypeScript's job a lot easier. 4. (Build #2 type-check program): For those input files which have not "logically changed" (meaning components within are semantically the same as they were before), the compiler will re-use the type-check file metadata from build #1, and _not_ generate a new .ngtypecheck shim. For components which have logically changed or where the previous .ngtypecheck contents cannot otherwise be reused, code generation happens as before. PR Close angular#36211
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