In bootstrapping.md the default AppModule has some extra imports which are not generated
by default in ng new removed those extra imports and add them at appropriate place.
PR Close#38549
The logic for computing identifiers, specifically for bound attributes
can be simplified by using the value span of the binding rather than the
source span.
PR Close#38899
This commit removes the scrollbar styles so that the default
styles in the browser render. This widens the webkit scroll bar.
This makes it easier to grab the scrollbar using assistive
technology and devices, and provides a wider target for
those who have dexterity issues. By removing these styles,
We will no longer have to maintain custom scrollbars specific to WebKit
and they will be accessible by default.
PR Close#38852
Changed several period into colons to be consistent throughout the doc.
Changed "If don't add the interface..." to "If _you_ don't add the interface..."
PR Close#38900
This commit updates ngbot config to avoid requesting google3 presubmit for the changes in
the `packages/zone.js/dist` folder (which is not synced into google3).
PR Close#38901
Currently, when we call jsonp method without importing HttpClientJsonpModule, an error message appears saying
'Attempted to construct Jsonp request without JsonpClientModule installed.' instance of 'Attempted to
construct Jsonp request without HttpClientJsonpModule installed.'
PR Close#38756
This commit adds a logic to ouput the number of new and fixed cycles after running circular
dependency checker. This information is useful to better understand an impact of changes in case
the number of new/fixed cycles is relatively big.
PR Close#38805
This commit updates several import statements in the core package to decrease the number of
cycles detected by the dependency checker tool.
PR Close#38805
Close#38795
in the XMLHttpRequest patch, when get `readystatechange` event, zone.js try to
invoke `load` event listener first, then call `invokeTask` to finish the
`XMLHttpRequest::send` macroTask, but if the request failed because the
server can not be reached, the `load` event listener will not be invoked,
so the `invokeTask` of the `XMLHttpRequest::send` will not be triggered either,
so we will have a non finished macroTask there which will make the Zone
not stable, also memory leak.
So in this PR, if the `XMLHttpRequest.status = 0` when we get the `readystatechange`
event, that means something wents wrong before we reached the server, we need to
invoke the task to finish the macroTask.
PR Close#38836
During the merge process, all validations have already been completed so git commit
hooks can be safely skipped. This additionally, prevents errors from occuring which
would be caused the commit hooks executing, such as when yarn updates and then yarn
commands are unable to run within the same process.
PR Close#38888
In #38666 we changed how ngcc deals with type expressions, where it
would now always emit the original type expression into the generated
code as a "local" type value reference instead of synthesizing new
imports using an "imported" type value reference. This was done as a fix
to properly deal with renamed symbols, however it turns out that the
compiler has special handling for certain imported symbols, e.g.
`ChangeDetectorRef` from `@angular/core`. The "local" type value
reference prevented this special logic from being hit, resulting in
incorrect compilation of pipe factories.
This commit fixes the issue by manually inspecting the import of the
type expression, in order to return an "imported" type value reference.
By manually inspecting the import we continue to handle renamed symbols.
Fixes#38883
PR Close#38892
Common AST formats such as TS and Babel do not use a separate
node for comments, but instead attach comments to other AST nodes.
Previously this was worked around in TS by creating a `NotEmittedStatement`
AST node to attach the comment to. But Babel does not have this facility,
so it will not be a viable approach for the linker.
This commit refactors the output AST, to remove the `CommentStmt` and
`JSDocCommentStmt` nodes. Instead statements have a collection of
`leadingComments` that are rendered/attached to the final AST nodes
when being translated or printed.
PR Close#38811
Because PhantomJS has been deprecated since March 2018, and `newEvent`
is very confusing for newcomers that read the testing documentation,
we remove it entirely, and instead assume most, if not all, newcomers
will run tests in Chrome as it is the default.
Fixes#23370
PR Close#37251
This commit simplifies the tests of `EventsComponent` (by introducing a
`createMockEvent()` helper and getting rid of the irrelevant `Event`
fields) and adds tests for some more usecases. It also makes the tests
more robust by using Jasmine's `Clock` to mock the current date.
PR Close#36517
In the events.json file most of tooltips are same as name so there
were of no use, as they were providing no extra information. So,
removed them from the events.json file
PR Close#36517
Data in events page was hardcoded and it is manually moved in the table.
Created a new events widget which will automatically move past and upcoming
events from events.json (`aio/content/marketing/events.json`) file to the
relevant table in the events tab
PR Close#36517
This commit improves the typeahead example, by using the emitted input
value. It also adds a unit test to ensure that the example is working
as intended.
PR Close#34190
ngc angular compiler was not mentioned in the glossary.
Glossary should contain the relevant terms in angular
which are hard to get. So, added a small defination of
ngc to the glossary
PR Close#36781
In the integration test suite of ngcc, we load a set of files from
`node_modules` into memory. This includes the `typescript` package and
`@angular` scoped packages, which account for a large number of large
files that needs to be loaded from disk. This commit moves this work
to the top-level, such that it doesn't have to be repeated in all tests.
PR Close#38840
Recent optimizations to ngcc have significantly reduced the total time
it takes to process `node_modules`, to such extend that sharding across
multiple processes has become less effective. Previously, running
ngcc asynchronously would allow for up to 8 workers to be allocated,
however these workers have to repeat work that could otherwise be shared.
Because ngcc is now able to reuse more shared computations, the overhead
of multiple workers is increased and therefore becomes less effective.
As an additional benefit, having fewer workers requires less memory and
less startup time.
To give an idea, using the following test setup:
```bash
npx @angular/cli new perf-test
cd perf-test
yarn ng add @angular/material
./node_modules/.bin/ngcc --properties es2015 module main \
--first-only --create-ivy-entry-points
```
We observe the following figures on CI:
| | 10.1.1 | PR #38840 |
| ----------------- | --------- | --------- |
| Sync | 85s | 25s |
| Async (8 workers) | 22s | 16s |
| Async (4 workers) | - | 11s |
In addition to changing the default number of workers, ngcc will now
use the environment variable `NGCC_MAX_WORKERS` that may be configured
to either reduce or increase the number of workers.
PR Close#38840
ngcc creates typically two `ts.Program` instances for each entry-point,
one for processing sources and another one for processing the typings.
The creation of these programs is somewhat expensive, as it concerns
module resolution and parsing of source files.
This commit implements several layers of caching to optimize the
creation of programs:
1. A shared module resolution cache across all entry-points within a
single invocation of ngcc. Both the sources and typings program
benefit from this cache.
2. Sharing the parsed `ts.SourceFile` for a single entry-point between
the sources and typings program.
3. Sharing parsed `ts.SourceFile`s of TypeScript's default libraries
across all entry-points within a single invocation. Some of these
default library typings are large and therefore expensive to parse,
so sharing the parsed source files across all entry-points offers
a significant performance improvement.
Using a bare CLI app created using `ng new` + `ng add @angular/material`,
the above changes offer a 3-4x improvement in ngcc's processing time
when running synchronously and ~2x improvement for asynchronous runs.
PR Close#38840
As part of the commit message conformance check, local commit message checks are
made to be warnings rather than failures. An additional local option is also in
place to allow for the commit message validation failures to be considered errors
instead.
PR Close#38784
When type-checking a component, the declaring NgModule scope is used
to create a directive matcher that contains flattened directive metadata,
i.e. the metadata of a directive and its base classes. This computation
is done for all components, whereas the type-check scope is constant per
NgModule. Additionally, the flattening of metadata is constant per
directive instance so doesn't necessarily have to be recomputed for
each component.
This commit introduces a `TypeCheckScopes` class that is responsible
for flattening directives and computing the scope per NgModule. It
caches the computed results as appropriate to avoid repeated computation.
PR Close#38843
For the compilation of a component, the compiler has to prepare some
information about the directives and pipes that are used in the template.
This information includes an expression for directives/pipes, for usage
within the compilation output. For large NgModule compilation scopes
this has shown to introduce a performance hotspot, as the generation of
expressions is quite expensive. This commit reduces the performance
overhead by only generating expressions for the directives/pipes that
are actually used within the template, significantly cutting down on
the compiler's resolve phase.
PR Close#38843
Currently we validate the configuration file on each `getConfig`
invocation. We can only validate once since the configuration
is cached.
Also while being at it, renames the cache variables to lower-case as those
do not represent constants (which are convention-wise upper case).
PR Close#38808
