angular/packages/compiler-cli/linker/src
Paul Gschwendtner 3e0e0b42fa refactor(compiler): emit signal input info in d.ts and generate partial compilation output (#53521)
This commit captures the metadata on whether an input is signal based or
not, in the `.d.ts` of directives and components. This exposes this
information to consumers of the directives. This is needed because
libraries may use signal inputs, and we need to know whether bound
inputs to this library are signal-based or not- so that we can generate
proper type-checking code (account for `InputSignal` or not).

Additionally, this commit introduces a new structure for the partial
compilation output of directive inputs. With the current emit, inputs
are captured in a data structure that is equivalent to the internal data
structure passed to `defineDirective` (the full compilation output).
This worked fine as we only captured a few strings, but in ends up
being a bad practice because partial compilation output should NOT
capture internal data structures that might be specific to a certian
Angular core version. Instead, we introduce a new "future proof"
structure that:

- can hold additional metadata in backwards-compatible ways, like
  `isSignal` or `isRequired`.
- can be parsed trivially using the `AstHost` for the linker, instead of
  having to unwrap/parse an array structure.

The new structure is only emitted when we discover that some inputs are
signal based (or ultimately end up configuring input flags). This is
done for backwards compatibility, so that libraries without signal
inputs remain compatible with older linker versions. In the future,
this might be the only emit.

Compliance tests for this follow in future commits, when the linker
portion is also in place. This commit specialices on the code
generation. With the linker, and compliance test infrastructure fixed
(that is broken right now), we can test the full integration.

PR Close #53521
2023-12-13 15:44:00 -08:00
..
ast refactor(compiler): required inputs prerequisite refactors (#49333) 2023-03-14 09:27:49 -07:00
file_linker refactor(compiler): emit signal input info in d.ts and generate partial compilation output (#53521) 2023-12-13 15:44:00 -08:00
fatal_linker_error.ts refactor(compiler-cli): linker - add Babel plugin, FileLinker and initial PartialLinkers (#39116) 2020-10-19 11:23:45 -07:00
linker_import_generator.ts docs: fix spelling (#46713) 2022-07-08 20:54:52 +00:00