The Angular compiler unconditionally adds a debug name transform for signals
which generates a conditional on `ngDevMode` (e.g., `ngDevMode ? { debugName: "xyz" } : []`).
During testing, `ngDevMode` is true, so the true branch executes but the
false branch is never executed. Consequently, coverage tools report the
false branch as an untested line/branch, preventing 100% test coverage.
This commit adds a synthetic `/* istanbul ignore next */` comment to the
generated false branch so that Istanbul ignores it. We only include the
istanbul comment (instead of additionally including c8) to focus on the
established standard for Angular CLI/Karma coverage while maintaining
compatibility with modern Vitest setups, since @vitest/coverage-v8 now
natively respects the fallback istanbul comment.
Fixes#64583
(cherry picked from commit dc4cf649b6)
Sets up the compliance tests to target es2022 since that's the default in the CLI. Also updates all of the tests, primarily because the generated output for static properties has changed.
Currently when the signal debug name transform sees something like `const foo = signal(0);`, it transforms the signal into `signal(0, {...(ngDevMode ? { debugName: 'foo' } : {})})`. After minification this becomes `signal(0, {})` which will allocate memory for the empty object literal.
These changes rework the logic to produce `signal(0, ...(ngDevMode ? [{ debugName: 'foo' }] : []))` which will be fully tree shaken away to `signal(0)`.
Currently if `TestBed.overrideComponent` is used on a class that uses initializer APIs (e.g. `input()`), the initializer metadata will be wiped out, because `overrideComponent` re-compiles the class with the information set by `setClassMetadata`. `setClassMetadata` only captures decorated members at the moment.
These changes introduce some logic to capture the new initializer-based APIs in `setClassMetadata` as well.
Fixes#57944.
PR Close#63957
Currently if `TestBed.overrideComponent` is used on a class that uses initializer APIs (e.g. `input()`), the initializer metadata will be wiped out, because `overrideComponent` re-compiles the class with the information set by `setClassMetadata`. `setClassMetadata` only captures decorated members at the moment.
These changes introduce some logic to capture the new initializer-based APIs in `setClassMetadata` as well.
Fixes#57944.
PR Close#63904
Implements a compiler transform that attempts to statically analyze variable names and apply them to usages of signal functions like signal, computed, effect, etc.
PR Close#57348
Previously the input flags were being generated as a reference to an enum member for better readability and under the assumption that minifiers would inline the values. That doesn't appear to be the case so these changes switch to using the literal values instead.
PR Close#55215
