Bazel has a restriction that a single output (eg. a compiled version of
//packages/common) can only be produced by a single rule. This precludes
the Angular repo from having multiple rules that build the same code. And
the complexity of having a single rule produce multiple outputs (eg. an
ngc-compiled version of //packages/common and an Ivy-enabled version) is
too high.
Additionally, the Angular repo has lots of existing tests which could be
executed as-is under Ivy. Such testing is very valuable, and it would be
nice to share not only the code, but the dependency graph / build config
as well.
Thus, this change introduces a --define flag 'compile' with three potential
values. When --define=compile=X is set, the entire build system runs in a
particular mode - the behavior of all existing targets is controlled by
the flag. This allows us to reuse our entire build structure for testing
in a variety of different manners. The flag has three possible settings:
* legacy (the default): the traditional View Engine (ngc) build
* local: runs the prototype ngtsc compiler, which does not rely on global
analysis
* jit: runs ngtsc in a mode which executes tsickle, but excludes the
Angular related transforms, which approximates the behavior of plain
tsc. This allows the main packages such as common to be tested with
the JIT compiler.
Additionally, the ivy_ng_module() rule still exists and runs ngc in a mode
where Ivy-compiled output is produced from global analysis information, as
a stopgap while ngtsc is being developed.
PR Close#24056
On narrow screens (where there is not enough room on the right to show
the floating ToC), an embedded ToC is shown (via an `<aio-toc embedded>`
element in the document). Since ToC was not a custom element, the
component was not instantiated for the embedded element.
This commit fixes it by making `aio-toc` a custom element and loading it
manually for the floating ToC (if necessary).
PR Close#23944
Short-circuitable expressions (using ternary & binary operators) could not use
the regular binding mechanism as it relies on the bindings being checked every
single time - the index is incremented as part of checking the bindings.
Then for pure function kind of bindings we use a different mechanism with a
fixed index. As such short circuiting a binding check does not mess with the
expected binding index.
Note that all pure function bindings are handled the same wether or not they
actually are short-circuitable. This allows to keep the compiler and compiled
code simple - and there is no runtime perf cost anyway.
PR Close#24039
This commit adds a mechanism by which the @angular/core annotations
for @Component, @Injectable, and @NgModule become decorators which,
when executed at runtime, trigger just-in-time compilation of their
associated types. The activation of these decorators is configured
by the ivy_switch mechanism, ensuring that the Ivy JIT engine does
not get included in Angular bundles unless specifically requested.
PR Close#23833
With `plnkrs`, we used to choose a different plnkr mode (normal vs
embedded) based on the size of the screen. This affected the layout of
the plnkr page ("embedded" plnkr mode was usable on small screens, while
"normal" mode wasn't). This is not to be confused with the live-example
mode we use today to determine whether the live-example should be a link
(that open StackBlitz on a new page) or embedded into the document
(using an iframe).
Since we no longer need to change the live-example URL based on the
screen size, there is no need to listen for rezise events on Window. The
necessary properties can be computed once and certain variables are
obsolete.
PR Close#23960
Previously, it was possible to set the live-example title as content in
the `<live-example>` element. This relied on our custom loader
functionality that extracted the content from the DOM element before
passing it to the Angular compiler and stored it on a property for later
retrieval.
Since we switched to custom elements (and got rid of the custom loader),
the property is no longer populated with the contents. As a result, many
live examples show the default title ("live example") instead of the one
specified as content.
This commit fixes it by projecting the content into an invisible node
for later retrieval (similar to what we do in other components, such as
the `CodeExampleComponent`).
PR Close#23960
Alex Rickabaugh
jenniferfell
George Kalpakas
Danny Rademacher
Pete Bacon Darwin
Alex Eagle
Juri
Mashhood Rastgar
Victor Berchet
Tiago Temporin
alexzuza
Stephen Fluin
Kara Erickson
Matias Niemelä
Judy Bogart
JoostK
thebyteman
Heo Sangmin
Miško Hevery
Jeremy Elbourn
Brandon Roberts
Patrick McDonald
VTHINKXIE
mhartington
Akihito Tamagawa
Collin Klopfenstein
Fabian Wiles