Currently each property binding generates an instruction like this:
```
property('prop1', ctx.value1);
property('prop2', ctx.value2);
```
The problem is that we're repeating the call to `property` for each of the properties. Since the `property` instruction returns itself, we can chain all of the calls which is more compact and it looks like this:
```
property('prop1', ctx.value1)('prop2', ctx.value2);
```
These changes implement the chaining behavior for regular property bindings and for synthetic ones, however interpolated ones are still handled like before, because they use a separate instruction.
This PR resolves FW-1389.
PR Close#31078
Add support for indexing of property reads, method calls in a template.
Visit AST of template syntax expressions to extract identifiers.
Child of #30959
PR Close#30963
i18nExp now uses `bind` internally rather than having the compiler generate it in order to bring it in line with other functions like `textBinding` & `property`.
FW-1384 #resolve
PR Close#31089
Packages that have been compiled using an older version of TypeScript
can have their decorators at the top-level of the ES5 bundles, instead
of inside the IIFE that is emitted for the class. Before this change,
ngcc only took static property assignments inside the IIFE into account,
therefore missing the decorators that were assigned at the top-level.
This commit extends the ES5 host to look for static properties in two
places. Testcases for all bundle formats that contain ES5 have been added
to ensure that this works in the various flavours.
A patch is included to support UMD bundles. The UMD factory affects how
TypeScripts binds the static properties to symbols, see the docblock of
the patch function for more details.
PR Close#30795
The `EntryPointFinder` computes the base paths to consider
when searching for entry-points. When there are `pathMappings`
provided it works out the best top level base-paths that cover all
the potential mappings.
If this computed basePath happens to coincide with an entry-point
path itself then we were missing it.
Now we check for an entry-point even at the base-path itself.
Related to https://github.com/angular/angular-cli/pull/14755
PR Close#31027
Commit 58be2ff884 has been created
before c0386757b1 landed, and therefore
the newly created compliance test was using an outdated expectation.
This commit updates the compliance test to no longer contain
the outdated expectation.
PR Close#30983
To provide some context: The implicit receiver is part of the
parsed Angular template AST. Any property reads in bindings,
interpolations etc. read from a given object (usually the component
instance). In that case there is an _implicit_ receiver which can also
be specified explicitly by just using `this`.
e.g.
```html
<ng-template>{{this.myProperty}}</ng-template>
```
This works as expected in Ivy and View Engine, but breaks in case the
implicit receiver is not used for property reads. For example:
```html
<my-dir [myFn]="greetFn.bind(this)"></my-dir>
```
In that case the `this` will not be properly translated into the generated
template function code because the Ivy compiler currently always treats
the `ctx` variable as the implicit receiver. This is **not correct** and breaks
compatibility with View Engine. Rather we need to ensure that we retrieve
the root context for the standalone implicit receiver similar to how it works
for property reads (as seen in the example above with `this.myProperty`)
Note that this requires some small changes to the `expression_converter`
because we only want to generate the `eenextContent()` instruction if the
implicit receiver is _actually_ used/needed. View Engine determines if that is the case by recursively walking through the converted output AST and
checking for usages of the `o.variable('_co')` variable ([see here][ve_check]). This would work too for Ivy, but involves most likely more code duplication
since templates are isolated in different functions and it another pass
through the output AST for every template expression.
[ve_check]: 0d6c9d36a1/packages/compiler/src/view_compiler/view_compiler.ts (L206-L208)
Resolves FW-1366.
PR Close#30897
9d9c9e43e5 has been created a few days ago
and wasn't rebased on top of recent changes that introduces a commonjs host.
This means that tests for the commonjs host haven't been updated to work with
the changes from from #30492 and now fail in `master`.
PR Close#30967
Currently undecorated classes are intentionally not processed
with ngcc. This is causing unexpected behavior because decorator
handlers such as `base_def.ts` are specifically interested in class
definitions without top-level decorators, so that the base definition
can be generated if there are Angular-specific class members.
In order to ensure that undecorated base-classes work as expected
with Ivy, we need to run the decorator handlers for all top-level
class declarations (not only for those with decorators). This is similar
to when `ngtsc` runs decorator handlers when analyzing source-files.
Resolves FW-1355. Fixes https://github.com/angular/components/issues/16178
PR Close#30821
When determining the module type of a bundle pointed to by the "main"
property, ngcc needs to read the bundle to figure out if it is CommonJS
or UMD format. However, when the "main" property does not exist ngcc
would crash while determining the path to the main bundle file.
This commit fixes the crash by checking if the "main" property is present
at all, before attempting to derive a full path to the bundle file.
Fixes#30916
Fixes FW-1369
PR Close#30950
The usage of array spread syntax in source code may be downleveled to a
call to TypeScript's `__spread` helper function from `tslib`, depending
on the options `downlevelIteration` and `emitHelpers`. This proves
problematic for ngcc when it is processing ES5 formats, as the static
evaluator won't be able to interpret those calls.
A custom foreign function resolver is not sufficient in this case, as
`tslib` may be emitted into the library code itself. In that case, a
helper function can be resolved to an actual function with body, such
that it won't be considered as foreign function. Instead, a reflection
host can now indicate that the definition of a function corresponds with
a certain TypeScript helper, such that it becomes statically evaluable
in ngtsc.
Resolves#30299
PR Close#30492
- Refactors compiler to stop generating `ɵɵselect(0)` instructions
- Alters template execution to always call the equivalent of `ɵɵselect(0)` before running a template in update mode
- Updates tests to not check for or call `ɵɵselect(0)`.
The goal here is to reduce the size of generated templates
PR Close#30830
Fixes Ivy throwing an error if it runs into an empty property binding on an `ng-template` (e.g. `<ng-template [something]=""></ng-template>`) by not generating an update instruction for it.
Fixes#30801.
This PR resoves FW-1356.
PR Close#30829
When ngcc processes an entrypoint, it updates `package.json` with
metadata about the processed format. Previously, it overwrote the
`package.json` with the stringified JSON object without spaces. This
made the file difficult to read (for example when looking at the file
while debugging an ngcc failure).
This commit fixes it by using spaces in the new `package.json` content.
PR Close#30831
- Removes ɵɵelementProperty instruction
- Updates tests that were using it
- NOTE: There is one test under `render3/integration_spec.ts` that is commented out, and needs to be reviewed. Basically, I could not find a good why to test what it was doing, because it was doing things that I am not sure we could generate in an acceptance test.
PR Close#30645
When an `ng-template` element has a variable declaration without a value,
it is assigned the value of the `$implicit` property in the embedded view's
context. The template compiler inserts a property access to `$implicit` for
template variables without a value, however the type-check code generation
logic did not. This resulted in incorrect type-checking code being generated.
Fixes FW-1326
PR Close#30675
Some HTML attributes don't correspond to their DOM property name, in which
case the runtime will apply the appropriate transformation when assigning
a property using its attribute name. One example of this is the `for`
attribute, for which the DOM property is named `htmlFor`.
The type-checking machinery in ngtsc must also take this mapping into
account, as it generates type-check code in which unclaimed property bindings
are assigned to properties of (subtypes of) `HTMLElement`.
Fixes#30607
Fixes FW-1327
PR Close#30675
With View engine it was possible to declare multiple projection
definitions and to programmatically project nodes into the slots.
e.g.
```html
<ng-content></ng-content>
<ng-content></ng-content>
```
Using `ViewContainerRef#createComponent` allowed projecting
nodes into one of the projection defs (through index)
This no longer works with Ivy as the `projectionDef` instruction only
retrieves a list of selectors instead of also retrieving entries for
reserved projection slots which appear when using the default
selector multiple times (as seen above).
In order to fix this issue, the Ivy compiler now passes all
projection slots to the `projectionDef` instruction. Meaning that
there can be multiple projection slots with the same wildcard
selector. This allows multi-slot projection as seen in the
example above, and it also allows us to match the multi-slot node
projection order from View Engine (to avoid breaking changes).
It basically ensures that Ivy fully matches the View Engine behavior
except of a very small edge case that has already been discussed
in FW-886 (with the conclusion of working as intended).
Read more here: https://hackmd.io/s/Sy2kQlgTE
PR Close#30561
`i18nAttributes` instructions always occur after the element instruction. This means that we need to treat `i18n-` attributes differently.
By defining a specific `AttributeMarker` we can ensure that we won't trigger directive inputs with untranslated attribute values.
FW-1332 #resolve
PR Close#30402
Changed runtime i18n to define attributes with bindings, or matching directive inputs/outputs as element properties as we are supposed to do in Angular.
This PR fixes the issue where directive inputs wouldn't be trigged.
FW-1315 #resolve
PR Close#30402
The R3TargetBinder "binds" an Angular template AST, computing semantic
information regarding the template and making it accessible.
One of the binding passes previously had a bug, where for the following
template:
<div *ngIf="foo as foo"></div>
which desugars to:
<ng-template ngIf [ngIf]="foo" let-foo="ngIf">
<div></div>
</ng-template>
would have the `[ngIf]` binding processed twice - in both the scope which
contains the `<ng-template>` and the scope inside the template. The bug
arises because during the latter, `foo` is a variable defined by `let-foo`,
and so the R3TargetBinder would incorrectly learn that `foo` inside `[ngIf]`
maps to that variable.
This commit fixes the bug by only processing inputs, outputs, and
templateAttrs from `Template`s in the outer scope.
PR Close#30669
Prior to this commit there were no explicit types setup for NgModuleFactory calls in ngfactories, so TypeScript inferred the type based on a given call. In some cases (when generic types were used for Components/Directives) that turned out to be problematic, so we add explicit typing for NgModuleFactory calls.
PR Close#30708
Plural ICU expressions depend on the locale (different languages have different plural forms). Until now the locale was hard coded as `en-US`.
For compatibility reasons, if you use ivy with AOT and bootstrap your app with `bootstrapModule` then the `LOCALE_ID` token will be set automatically for ivy, which is then used to get the correct plural form.
If you use JIT, you need to define the `LOCALE_ID` provider on the module that you bootstrap.
For `TestBed` you can use either `configureTestingModule` or `overrideProvider` to define that provider.
If you don't use the compat mode and start your app with `renderComponent` you need to call `ɵsetLocaleId` manually to define the `LOCALE_ID` before bootstrap. We expect this to change once we start adding the new i18n APIs, so don't rely on this function (there's a reason why it's a private export).
PR Close#29249
This patch is one of the final patches to refactor the styling algorithm
to be more efficient, performant and less complex.
This patch enables sanitization support for map-based and prop-based
style bindings.
PR Close#30667
This commit makes the static flag on @ViewChild and @ContentChild required.
BREAKING CHANGE:
In Angular version 8, it's required that all @ViewChild and @ContentChild
queries have a 'static' flag specifying whether the query is 'static' or
'dynamic'. The compiler previously sorted queries automatically, but in
8.0 developers are required to explicitly specify which behavior is wanted.
This is a temporary requirement as part of a migration; see
https://angular.io/guide/static-query-migration for more details.
@ViewChildren and @ContentChildren queries are always dynamic, and so are
unaffected.
PR Close#30639
The AbsoluteModuleStrategy in ngtsc assumed that the source code is
formatted as TypeScript with regards to module exports.
In ngcc this is not always the case, so this commit changes
`AbsoluteModuleStrategy` so that it relies upon a `ReflectionHost` to
compute the exports of a module.
PR Close#30200
Prior to this change we processed binding expression (including bindings with pipes) in i18n attributes before we generate update instruction. As a result, slot offsets for pipeBind instructions were calculated incorrectly. Now we perform binding expression processing when we generate "update block" instructions, so offsets are calculated correctly.
PR Close#30573
Currently the `@angular/compiler-cli` compliance tests sometimes do
not throw an exception if the expected output does not match the
generated JavaScript output. This can happen for the following cases:
1. Expected code includes character that is not part of known alphabet
(e.g. `Δ` is still used in a new compliance test after rebasing a PR)
2. Expected code asserts that a string literal matches a string with
escaped quotes. e.g. expects `const $var$ = "\"quoted\"";`)
PR Close#30597
There is an encoding issue with using delta `Δ`, where the browser will attempt to detect the file encoding if the character set is not explicitly declared on a `<script/>` tag, and Chrome will find the `Δ` character and decide it is window-1252 encoding, which misinterprets the `Δ` character to be some other character that is not a valid JS identifier character
So back to the frog eyes we go.
```
__
/ɵɵ\
( -- ) - I am ineffable. I am forever.
_/ \_
/ \ / \
== == ==
```
PR Close#30546
Previously we defensively wrapped expressions in case they ran afoul of
precedence rules. For example, it would be easy to create the TS AST structure
Call(Ternary(a, b, c)), but might result in printed code of:
```
a ? b : c()
```
Whereas the actual structure we meant to generate is:
```
(a ? b : c)()
```
However the TypeScript renderer appears to be clever enough to provide
parenthesis as necessary.
This commit removes these defensive paraenthesis in the cases of binary
and ternary operations.
FW-1273
PR Close#30349
Previously, interpolations were generated into TCBs as a comma-separated
list of expressions, letting TypeScript infer the type of the expression
as the type of the last expression in the chain. This is undesirable, as
interpolations always result in a string type at runtime. Therefore,
type-checking of bindings such as `<img src="{{ link }}"/>` where `link`
is an object would incorrectly report a type-error.
This commit adjusts the emitted TCB code for interpolations, where a
chain of string concatenations is emitted, starting with the empty string.
This ensures that the inferred type of the interpolation is of type string.
PR Close#30177
Matt Lewis
Matt Lewis
crisbeto
Alex Eagle
Ayaz Hafiz
Olivier Combe
JoostK
Pete Bacon Darwin
Paul Gschwendtner
Ben Lesh
George Kalpakas
Alex Rickabaugh
Andrew Kushnir
Matias Niemelä
Kara Erickson
janith
Alan