This commit updates ngbot config to avoid requesting google3 presubmit for the changes in
the `packages/compiler-cli/src/ngtsc/sourcemaps` folder (which is not synced into google3).
PR Close#39035
Previously, when updating the dependency versions in
`aio/tools/examples/shared/package.json` (which contains all
dependencies used in docs examples projects), one had to manually go
through all boilerplate directories and update the `package.json` files
with the same versions.
This commit simplifies this task by automating it via a Node.js script.
PR Close#38992
When updating the boilerplate for CLI-based docs examples, one needed to
install dependencies inside the
`aio/tools/examples/shared/boilerplate/cli/` directory, which resulted
in a `node_modules/` directory and a `yarn.lock` file. These were not
supposed to be part of the boilerplate, so they had to be manually
removed after the boilerplate was updated.
This commit simplifies the workflow by allowing boilerplate files to be
ignored (both by git and the `example-boilerplate.js` script) via a
`.gitignore` file. This way, it is no longer necessary to manually
remove the unneeded directories/files.
PR Close#38992
This commit updates the Markdown files inside the `aio/tools/` directory
to contain one sentence per line in order to be consistent with how
Markdown files are formatted in the rest of the repo.
PR Close#38992
`NodeInjector` is store in expando as a list of values in an array. The
offset constant into the array have been brought together into a single
`NodeInjectorOffset` enum with better documentation explaining their usage.
PR Close#38707
This change makes `getPreviousOrParentTNode` return `TNode|null` (rather
than just `TNode`) which is more reflective of the reality. The
`getPreviousOrParentTNode` can be `null` upon entering the `LView`.
PR Close#38707
`TNodeType.View` was created to support inline views. That feature did
not materialize and we have since removed the instructions for it, leave
an unneeded `TNodeType.View` which was still used in a very
inconsistent way. This change no longer created `TNodeType.View` (and
there will be a follow up chang to completely remove it.)
Also simplified the mental model so that `LView[HOST]`/`LView[T_HOST]`
always point to the insertion location of the `LView`.
PR Close#38707
Host `TNode` was passed into `getOrCreateTNode` just so that we can
compute weather or not we are a root node. This was needed because
`previousOrParentTNode` could have `TNode` from `TView` other then
current `TView`. This is confusing mental model. Previous change
ensured that `previousOrParentTNode` must always be part of `TView`,
which enabled this change to remove the unneeded argument.
PR Close#38707
`previousOrParentTNode` stores current `TNode`. Due to inconsistent
implementation the value stored would sometimes belong to the current
`TView` and sometimes to the parent. We have extra logic which accounts
for it. A better solution is to just ensure that `previousOrParentTNode`
always belongs to current `TNode`. This simplifies the mental model
and cleans up some code.
PR Close#38707
Notes Paul and Pawel as OOO through commenting out their usernames in users
entries throughout the pullapprove configs which could result in their review
being requested by pullapprove.
PR Close#39028
This commit updates TypeScript and other dependencies used in angular.io
to more closely align with new apps created with the latest Angular CLI.
It also updates `tsconfig.json`, re-ordering some properties around and
introducing some more checks (again to more closely match new CLI apps).
NOTE:
I skipped updating RxJS from 6.5.4 to 6.6.3, because it increased the
main bundle by ~500B.
NOTE:
`tslint.json` will be updated in a subsequent PR, because it requires
more extensive changes.
PR Close#39017
This commit updates the version of Angular Components used in angular.io
to version 10.2.2.
NOTE:
The actual size increase for the main bundle in ViewEngine mode is 1.3KB
(because the actual size before this commit was 430423B, not 430008B as
seen in `aio-payloads.json`).
PR Close#39017
This commit updates the version of Angular framework used in angular.io
to version 10.1.3.
NOTE:
The actual size decrease for the main bundle is 3KB (because the actual
size before this commit was 451226B, not 450952B as seen in
`aio-payloads.json`).
PR Close#39017
With the introduction of incremental type checking in #36211, an
intermediate `ts.Program` for type checking is only created if there are
any templates to check. This rendered some tests ineffective at avoiding
regressions, as the intermediate `ts.Program` was required for the tests
to fail if the scenario under test would not be accounted for. This
commit adds a single component to these tests, to ensure the
intermediate `ts.Program` is in fact created.
PR Close#39011
Prior to this fix, incremental rebuilds could fail to type check due to
missing ambient types from auto-discovered declaration files in @types
directories, or type roots in general. This was caused by the
intermediary `ts.Program` that is created for template type checking,
for which a `ts.CompilerHost` was used which did not implement the
optional `directoryExists` methods. As a result, auto-discovery of types
would not be working correctly, and this would retain into the
`ts.Program` that would be created for an incremental rebuild.
This commit fixes the issue by forcing the custom `ts.CompilerHost` used
for type checking to properly delegate into the original
`ts.CompilerHost`, even for optional methods. This is accomplished using
a base class `DelegatingCompilerHost` which is typed in such a way that
newly introduced `ts.CompilerHost` methods must be accounted for.
Fixes#38979
PR Close#39011
We weren't resolving a path correctly which resulted in an error on Windows.
For reference, here's the error. Note the extra slash before `C:`:
```
Error: ENOENT: no such file or directory, scandir '/C:/bazel_output_root/yxvwd24o/external/npm/node_modules/typescript'
at Object.readdirSync (fs.js:854:3)
```
PR Close#39005
In the past, the docs examples were configured to not use AOT
compilation in development mode (only in production mode). This was an
artifact of when JIT was the default in development mode.
Now that AOT is the default (even in development mode) for new CLI apps,
this commit configures all docs examples to always use AOT compilation.
(This has been made possible by fixing the `component-interaction` docs
example to correctly run in AOT mode in an earlier commit.)
PR Close#39001
Previously, some of the e2e tests of the `component-interaction` docs
example were disabled because they were failing.
This commit fixes and re-enables them.
PR Close#39001
This commit refactors the e2e tests of the `component-interaction` docs
example to improve readability and make them easier to maintain.
Changes include:
- Switch from `element.all().get(0)` to `element()` when there is only
one such element on the page.
- Switch from `Promise#then()` to `async/await`.
- Move `ElementFinder`s at the top of the test (instead of having them
interleaved with expectations).
- Load the page before every test (i.e. in a `beforeEach()` instead of
`beforeAll()`) to prevent state from each test leaking into the
subsequent tests.
- Order imports alphabetically.
PR Close#39001
Previously, the `component-interaction` docs example was configured to
run e2e tests on CI in development mode (in contrast to the default for
all docs examples, which is to run e2e tests in production mode). This
was necessary due to the following reasons:
- One of the components, `CountdownTimerComponent`, which is used by
`CountdownLocalVarParentComponent` and
`CountdownViewChildParentComponent`, was triggering a periodic
asynchronous task (via `setInterval()`), which prevented the app from
stabilizing and caused tests to fail.
- In order to prevent this from happening, the example's `AppModule` had
special provisioning to not include the problematic components in its
declarations when testing.
- Since this had to be determined dynamically at runtime (via inspecting
the URL query params), the `AppModule`'s config could not be
statically evaluated in AOT compilation.
This commit fixes the example to make it compatible with AOT compilation
and removes the custom test command from its `example-config.json`
(allowing it to be run with the default e2e test command, i.e. in
production mode).
PR Close#39001
This commit updates the docs examples to Angular v10.1.3. In addition to
updating the dependencies versions, it also updates the project's
structure and config to more closely match what a new v10 CLI app would
look like. See, also, the [diff][1] between a basic v9.1.4 CLI app and a
v10.1.3 one.
[1]: https://github.com/cexbrayat/angular-cli-diff/compare/9.1.4..10.1.3
PR Close#38993
BlacklistedStackFrames to InternalZoneJsStackFrames along with other related
symbols renamed with the same changes (with appropriate casing style).
PR Close#38978
Previously, the `retry` example did not work as intended. The `retry`
operator was called before the exception occured, thus not retrying the
`ajax` request.
This commit moves the `retry` operator into the correct order to ensure
that the failed request is retried.
PR Close#38905
Creates a tool for staging and publishing releases as per the
new branching and versioning that has been outlined in the following
document. The tool is intended to be used across the organization to
ensure consistent branching/versioning and labeling:
https://docs.google.com/document/d/197kVillDwx-RZtSVOBtPb4BBIAw0E9RT3q3v6DZkykU/edit#heading=h.s3qlps8f4zq7dd
The tool implements the actions as outlined in the following
initial plan: https://hackmd.io/2Le8leq0S6G_R5VEVTNK9A.
The implementation slightly diverged in so far that it performs
staging and publishing together so that releasing is a single
convenient command. In case of errors for which re-running the
full command is not sufficient, we want to consider adding
recover functionality. e.g. when the staging completed, but the
actual NPM publishing aborted unexpectedly due to build errors.
PR Close#38656
Introduces a new command for `ng-dev release`, so that the NPM
dist tag can be set for all configured NPM packages. This command
can be useful in case a manual tag needs to be set, but it is
primarily used by the release tooling when a new stable version
is cut, and when the previous patch branch needs to be set as LTS
version through a `v{major}-lts` dist tag.
It is necessary to have this as a command so that the release tool
can execute it for old branches where other packages might have been
configured. This is similar to the separate `ng-dev build` command
that we created.
Note that we also added logic for spawning a process conveniently
with different "console output" modes. This will be useful for
other command invocations in the release tool and it's generally
better than directly using native `child_process` as that one doesn't
log to the dev-infra debug log file.
PR Close#38656
Adds a command for building all release packages. This command
is primarily used by the release tool for building release output
in version branches. The release tool cannot build the release packages
configured in `master` as those packages could differ from the
packages available in a given version branch. Also, the build process
could have changed, so we want to have an API for building
release packages that is guaranteed to be consistent across branches.
PR Close#38656
Moves the existing `ng-dev release env-stamp` command into a
subfolder so that the staging/publish tool can have its own
dedicated folder (without being polluted by the env-stamp logic).
Every subcommand should be in its own folder.
PR Close#38656
Adds a new folder to dev-infra where shared testing utilities
could be placed in. This commit already adds initial testing
utilities for dealing with the `GitClient` and SemVer versions.
The `GitClient` in the testing utilities simulates actual Git
behavior in a virtual manner. It's not complete at all, but can
be extended based on our needs. The currently implemented commands
are the most basic ones that we'd need for our release tooling.
PR Close#38656
Adds a method for printing active release trains for a configured
project. This is helpful for the release tool that will print
the active release trains. Also this can be useful for the
caretaker status command, where we could print the active
version branches (i.e. "is there currently a feature-freeze branch").
PR Close#38656
Adds logic for determining active LTS branches for a given
release configuration. The active LTS branches can be determined
by querying NPM and matching dist tags against a specific
pattern. i.e. `v{major}-lts`.
This logic will be useful for the release tool that supports
publishing of active LTS version branches.
PR Close#38656
Cleans up outdated comments in the shared dev-infra Git
utilities. We also export the Graphql client for consistency
as we expose the `GithubClient` and `GitClient` too.
PR Close#38656
We initially added logic for determining active release trains into
the merge script. Given we now build more tools that rely on this
information, we move the logic into a more general "versioning" folder
that can contain common logic following the versioning document for the
Angular organization.
PR Close#38656
Introduces a new configuration for the `ng-dev release` command. This
configuration will be the source of truth for all release packages
and how they can be built.
Additionally, in a temporary manner where each project has its own
way of generating the changelog, the changelog generation can be
configured. This will be removed in the future when there is
canonical changelog generation in the dev-infra shared package.
PR Close#38656
Exposes logic for dealing with LTS branches, so that the release
tool can re-use it for cutting LTS patch releases.
Eventually, we can move all of this logic to a more dedicated
folder instead of having it inside the merge folder.
PR Close#38656
Instead of maintaining multiple interface for grouping
owner name and repo name, we expose a shared interface
describing a Github repository.
One unfortunate downside is that the GraphQL Github
and Rest API diverge slightly with the key for the
repository name. i.e. rest uses `repo` for the name
of a repository, while GraphQL uses `name` for the name.
If that would be consistent, we could use the rest operator
to pass a repository to the Octokit REST or GraphQL API. This
does not work, so we have a small manual overhead as seen
in the `branches.ts` file.
PR Close#38656
The dev-infra package is currently built with Bazel and ts-node.
In Bazel, the shared tsconfig from the `packages/` folder is used.
This means that the code is built in strict mode, but IDEs and
ts-node do not know about the strictness. This is because the tsconfig
is part of the `packages` folder and not accessible from the
dev-infra package. We fix this by adding an IDE and ts-node specific
tsconfig to the dev-infra package.
This helps with spotting compilation failures before building
with Bazel / waiting for CI to check build state.
PR Close#38656
Previously, the logic for determing the active release trains did not
return the resolved version of a release train. With the publish script
being created, we need this information and can just pass it through,
so that we do not need to fetch and parse the package.json of given
branches multiple times.
PR Close#38656
Sets up the NPM `ora` package in the project and in dev-infra,
so that we can show progress spinners when needed. This is useful
in the publish release script when we wait for a pull request to
be merged.
PR Close#38656
The git client respects the `SpawnSyncOptions` when a command
is executed. Currently it does not hide the command info
messages when commands are run in silent mode.
We fix this as part of this commit, so that the command info
is only printed to `debug` if `stdio` is set to `ignore`.
Additonally, the github token is made public so that it can be
used by commands if other repositories like forks are targeted.
PR Close#38656
Instead of repeating the logic for adding the github token to
a repository git url, we add a shared function for automatically
computing the URls with token.
Additionally, URLs for updating/generating tokens have been moved
to a dedicated file in the `utils` folder. Also while being at it,
the yargs github token helper is also moved into the dedicated
Git/Github related util folder.
PR Close#38656
Prior to this change, each invocation of `loadStandardTestFiles` would
load the necessary files from disk. This function is typically called
at the top-level of a test module in order to share the result across
tests. The `//packages/compiler-cli/test/ngtsc` target has 8 modules
where this call occurs, each loading their own copy of
`node_modules/typescript` which is ~60MB in size, so the memory overhead
used to be significant. This commit loads the individual packages into
a standalone `Folder` and mounts this folder into the filesystem of
standard test files, such that all file contents are no longer
duplicated in memory.
PR Close#38909
Some compiler tests take a long time to run, even using multiple
executors. A profiling session revealed that most time is spent in
parsing source files, especially the default libraries are expensive to
parse.
The default library files are constant across all tests, so this commit
introduces a shared cache of parsed source files of the default
libraries. This achieves a significant improvement for several targets
on my machine:
//packages/compiler-cli/test/compliance: from 23s to 5s.
//packages/compiler-cli/test/ngtsc: from 115s to 11s.
Note that the number of shards for the compliance tests has been halved,
as the extra shards no longer provide any speedup.
PR Close#38909
Previously, the `backoff()` example did not work as intended. More
specifically, the `range(1, maxTries)` observable would complete
immediately after emitting the `maxTries`th value, causing the overall
observable to also complete. As a result, it would only make
`maxTries - 1` attempts to recover from an error. More importantly, the
outer observable would complete successfully instead of erroring.
This commit fixes the `backoff()` operator by ensuring it makes exactly
`maxTries` attempts to recover and it propagates the actual error to the
outer observable.
The test for this change is added in the next commit.
PR Close#38896
Close#38334.
zone.js provides a flag DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION to let zone.js
throw the original error instead of wrap it when uncaught promise rejection found.
But the rejection value could be anything includes primitive value such as number.
In that case, we should not attach any additional properties to the value.
PR Close#38476
In Ivy, template type-checking has 3 modes: basic, full, and strict. The
primary difference between basic and full modes is that basic mode only
checks the top-level template, whereas full mode descends into nested
templates (embedded views like ngIfs and ngFors). Ivy applies this approach
to all of its template type-checking, including the DOM schema checks which
validate whether an element is a valid component/directive or not.
View Engine has both the basic and the full mode, with the same distinction.
However in View Engine, DOM schema checks happen for the full template even
in the basic mode.
Ivy's behavior here is technically a "fix" as it does not make sense for
some checks to apply to the full template and others only to the top-level
view. However, since g3 relies exclusively on the basic mode of checking and
developers there are used to DOM checks applying throughout their template,
this commit re-enables the nested schema checks even in basic mode only in
g3. This is done by enabling the checks only when Closure Compiler
annotations are requested.
Outside of g3, it's recommended that applications use at least the full mode
of checking (controlled by the `fullTemplateTypeCheck` flag), and ideally
the strict mode (`strictTemplates`).
PR Close#38943
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
This commit creates a sample router test application to introduce the
symbol tests. It serves as a guard to ensure that any future work on the
router package does not unintentionally increase the payload size.
PR Close#38714
Recent work on compiler internals in #38539 led to an unexpected failure,
where a pipe used exclusively inside of an ICU would no longer be
emitted into the compilation output. This caused runtime errors due to
missing pipes.
The issue occurred because the change in #38539 would determine the set
of used pipes up-front, independent from the template compilation using
the `R3TargetBinder`. However, `R3TargetBinder` did not consider
expressions within ICUs, so any pipe usages within those expressions
would not be detected. This fix unblocks #38539 and also concerns
upcoming linker work, given that prelink compilations would not go
through full template compilation but only `R3TargetBinder`.
PR Close#38810
Some lower level APIs are used by CLI, and requiring
the `formatOpions` argument at that level is a
breaking change. This commit makes it optional
at every level to avoid the breaking change.
PR Close#38787
As part of the migration to a common strategy/method for branching and releasing across
the main angular repositories, updates need to be made to the documentation. These changes
reflect the updates made and is based on the following document which describes the
merging label expectations: https://docs.google.com/document/d/197kVillDwx-RZtSVOBtPb4BBIAw0E9RT3q3v6DZkykU
PR Close#38401
PR Close#38793
The `RefreshTransplantedView` flag is used to indicate that the view or one of its children
is transplanted and dirty, so it should still be refreshed as part of change detection.
This flag is set on the transplanted view itself as well setting a
counter on as its parents.
When a transplanted view is detached and still has this flag, it means
it got detached before it was refreshed. This can happen for "backwards
references" or transplanted views that are inserted at a location that
was already checked. In this case, we should decrement the parent
counters _and_ clear the flag on the detached view so it's not seen as
"transplanted" anymore (it is detached and has no parent counters to
adjust).
fixes#38619
PR Close#38768
There is a slight difference between `map`...`concatAll` and `concatMap`
in that the latter (`concatMap`) will ensure that the computations are
executed in-order and only if needed while the former may execute the
`map` body of all items if they do not emit immediately. That is, if the stream
is
`from([a, b, c]).pipe(map(v => of(v).pipe(delay(1))), concatAll(), first())`
the `map` body will execute for all of `a`, `b`, and `c`.
However, the following will only execute the `concatMap` body for `a`
`from([a, b, c]).pipe(concatMap(v => of(v).pipe(delay(1))), first())`
See https://stackblitz.com/edit/rxjs-cvwxyxfixes#38691
PR Close#38780
This commit improves the error thrown by the downgrade module with a more
descriptive message on why the downgrade is failing.
Closes#37579
PR Close#38671
As not all users, particularly contributors consistently contributing with a deep
understanding of our commit message guidelines, will not want to rely on the
commit message wizard, we allow a user to opt out of using this wizard during
commit message creation.
PR Close#38701
Create a utility for loading a local user configuration object to describe
local configuration values, such as skipping the commit message wizard.
PR Close#38701
Previously, the validateCommitMessage function ran validation and logged the results.
The validateCommitMessage function now returns an object containing the validation
results and the cli action functions are instead responsible for logging the results.
This is being done as a prefactor for a change which allows for commit message
hook validation to be either a blocking error or a warning.
PR Close#38703
In the test project there are no longer reference markers and location
markers, so there's no need to "pre-process" the source files to remove
them. This will make the Ivy tests cleaner and faster.
PR Close#38777
Add the new podcast called The Deep Dive to the list of Podcast resources.
Also replace the name and URL for Angular inDepth as the old URL is deprecated.
PR Close#37621
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#38749
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#38749
Whitespace can be relevant in extracted XLIFF translation files.
Some i18n tools - e.g. CAT tool (OmegaT) - will reformat
the file to collapse whitespace if there is no indication to tell it
not to.
This commit adds the ability to specify "format options" that are passed
to the translation file serializer. The XLIFF 1.2 and 2.0 seralizers have
been updated to accept `{"xml:space":"preserve"}` format option which will
by added to the `<file>` element in the serialized translation file during
extraction.
Fixes#38679
PR Close#38737
In most browsers, clicking links with the Alt key has a special behavior, for example, Chrome
downloads the target resource. As with other modifier keys, the router should stop the original
navigation to avoid preventing the browser’s default behavior.
When users click a link while holding the Alt key together, the browsers behave as follows.
Windows 10:
| Browser | Behavior |
|:-----------|:--------------------------------------------|
| Chrome 84 | Download the target resource |
| Firefox 79 | Prevent navigation and therefore do nothing |
| Edge 84 | Download the target resource |
| IE 11 | No impact |
macOS Catalina:
| Browser | Behavior |
|:-----------|:--------------------------------------------|
| Chrome 84 | Download the target resource |
| Firefox 79 | Prevent navigation and therefore do nothing |
| Safari 13 | Download the target resource |
PR Close#38375
The type-to-value conversion could previously crash if a symbol was
resolved that does not have any declarations, e.g. because it's imported
from a missing module. This would typically result in a semantic
TypeScript diagnostic and halt further compilation, therefore not
reaching the type-to-value conversion logic. In Bazel however, it turns
out that Angular semantic diagnostics are requested even if there are
semantic TypeScript errors in the program, so it would then reach the
type-to-value conversation and crash.
This commit fixes the unsafe access and adds a test that ignores the
TypeScript semantic error, effectively replicating the situation as
experienced under Bazel.
Fixes#38670
PR Close#38684
Previously, localized strings had very limited or incorrect source-mapping
information available.
Now the i18n AST nodes and related output AST nodes include source-span
information about message-parts and placeholders - including closing tag
placeholders.
This information is then used when generating the final localized string
ASTs to ensure that the correct source-mapping is rendered.
See #38588 (comment)
PR Close#38747
The `MessagePiece` and derived classes, `LiteralPiece` and `PlaceholderPiece`
need to be referenced in the `LocalizedString` output AST class, so that we
can render the source-spans of each piece.
PR Close#38747
The `TagPlaceholder` can contain children, in which case there are two source
spans of interest: the opening tag and the closing tag. This commit now allows
the closing tag source-span to be tracked, so that it can be used later in
source-mapping.
PR Close#38747
The expression parser will split the expression up at the interpolation markers
into expressions and static strings. This commit also captures the positions of
these strings in the expression to be used in source-mapping later.
PR Close#38747
The `R3TargetBinder` accepts an interface for directive metadata which
declares types for `input` and `output` objects. These types convey the
mapping between the property names for an input or output and the
corresponding property name on the component class. Due to
`R3TargetBinder`'s requirements, this mapping was specified with property
names as keys and field names as values.
However, because of duck typing, this interface was accidentally satisifed
by the opposite mapping, of field names to property names, that was produced
in other parts of the compiler. This form more naturally represents the data
model for inputs.
Rather than accept the field -> property mapping and invert it, this commit
introduces a new abstraction for such mappings which is bidirectional,
eliminating the ambiguous plain object type. This mapping uses new,
unambiguous terminology ("class property name" and "binding property name")
and can be used to satisfy both the needs of the binder as well as those of
the template type-checker (field -> property).
A new test ensures that the input/output metadata produced by the compiler
during analysis is directly compatible with the binder via this unambiguous
new interface.
PR Close#38685
This commit adds `ngDevMode` guard to throw some errors only in dev mode
(similar to how things work in other parts of Ivy runtime code). The
`ngDevMode` flag helps to tree-shake these error messages from production
builds (in dev mode everything will work as it works right now) to decrease
production bundle size.
PR Close#38612
If a type has been renamed when it was exported, we need to
reference the external public alias name rather than the internal
original name for the type. Otherwise we will try to import the
type by its internal name, which is not publicly accessible.
Fixes#38238
PR Close#38666
A recent change to `@angular/localize` brought in the `AbsoluteFsPath` type
from the `@angular/compiler-cli`. But this brought along with it a reference
to NodeJS typings - specifically the `FileSystem` interface refers to the
`Buffer` type from NodeJS.
This affects compilation of `@angular/localize` code that will be run in
the browser - for example projects that reference `loadTranslations()`.
The compilation breaks if the NodeJS typings are not included in the build.
Clearly it is not desirable to have these typings included when the project
is not targeting NodeJS.
This commit replaces references to the NodeJS `Buffer` type with `Uint8Array`,
which is available across all platforms and is actually the super-class of
`Buffer`.
Fixes#38692
PR Close#38700
Previously, the location of a translation message, in XLIFF 2, was only
rendered if there were also notes for meaning or description. Now the
location will be rendered even if the other metadata is not provided.
Fixes#38705
PR Close#38713
This instruction was deprecated in 664e0015d4de720216c52b13b808f9ba41b7da38
and is no longer referenced in any meaningful
way, so it can be removed.
PR Close#38733
This commit upgrades all dependencies in `aio/aio-builds-setup/scripts-js/`
to latest versions and also includes all necessary code changes to
ensure the tests are passing with the new dependency versions.
In particular:
- We ensure `nock`'s `Scope#done()` is not called before receiving a
response to account for a breaking change introduced in
nock/nock#1960.
- The use of `nock`'s `Scope#log()` method was removed, because the
method is no longer available since nock/nock#1966. See
https://github.com/nock/nock#debugging for more info on debugging
failed matches.
See also
e23ba31b13/migration_guides/migrating_to_13.md
for more info on migrating from `nock` v12 to v13.
PR Close#38736
Previously, the compiler was not able to display template parsing errors as
true `ts.Diagnostic`s that point inside the template. Instead, it would
throw an actual `Error`, and "crash" with a stack trace containing the
template errors.
Not only is this a poor user experience, but it causes the Language Service
to also crash as the user is editing a template (in actuality the LS has to
work around this bug).
With this commit, such parsing errors are converted to true template
diagnostics with appropriate span information to be displayed contextually
along with all other diagnostics. This majorly improves the user experience
and unblocks the Language Service from having to deal with the compiler
"crashing" to report errors.
PR Close#38576
The template type-checking engine includes utilities for creating
`ts.Diagnostic`s for component templates. Previously only the template type-
checker itself created such diagnostics. However, the template parser also
produces errors which should be represented as template diagnostics.
This commit prepares for that conversion by extracting the machinery for
producing template diagnostics into its own sub-package, so that other parts
of the compiler can depend on it without depending on the entire template
type-checker.
PR Close#38576
`tView` that is stored on a component def contains information about directives and pipes
that are available in the scope of this component. Patching component scope causes `tView` to be
updated. Prior to this commit, the `tView` information was not restored/reset in case component
class is not declared in the `declarations` field while calling `TestBed.configureTestingModule`,
thus causing `tView` to be reused between tests (thus preserving scopes information between tests).
This commit updates TestBed logic to preserve `tView` value before applying scope changes and
reset it back to the previous state between tests.
Closes#38600.
PR Close#38659
Previously this package was installed in the default `dependencies` section
of `package.json`, but this meant that its own dependencies are treated as
dependencies of the main project: Babel, for example.
Generally, $localize` is not used at runtime - it is compiled out by the
translation tooling, so there is no need for it to be a full dependency.
In fact, even if it is used at runtime, the package itself is only used
at dev-time since the runtime bits will be bundled into a distributable.
So putting this package in `devDependencies` would only prevent libraries
from bringing the package into application projects that used them. This
is probably good in itself, since it should be up to the downstream project
to decide if it wants to include `@angular/localize` at runtime.
This commit changes the default location of the package to be the
`devDependencies` section, but gives an option `useAtRuntime` to choose
otherwise.
Fixes#38329
PR Close#38680
Previously the position of the error in a translation file when parsing
it was not displayed. Just the error message.
Now the position (line and column) and some context is displayed
along with the error messages.
Fixes#38377
PR Close#38673
The angular team relies on a number of services for hosting code, running CI, etc. This
tool allows for checking the operational status of all services at once as well as the current
state of the repository with respect to merge and triage ready issues and prs.
PR Close#38601
The HTML parser gets an element's namespace either from the tag name
(e.g. `<svg:rect>`) or from its parent element `<svg><rect></svg>`) which
breaks down when an element is inside of an SVG `foreignElement`,
because foreign elements allow nodes from a different namespace to be
inserted into an SVG.
These changes add another flag to the tag definitions which tells child
nodes whether to try to inherit their namespaces from their parents.
It also adds a definition for `foreignObject` with the new flag,
allowing elements placed inside it to infer their namespaces instead.
Fixes#37218.
PR Close#38477
Creates a mixin for requiring a github token to be provided to a command. This mixin
allows for a centralized management of the requirement and handling of the github-token.
PR Close#38630
Currently the merge script default branch configuration throws an error
if an unexpected version branch is discovered. The error right now
assumes to much knowledge of the logic and the document outlining
the release trains conceptually.
We change it to something more easy to understand that doesn't require
full understanding of the versioning/labeling/branching document that
has been created for the Angular organization.
PR Close#38622
Creates infrastructure to write outputs of command runs to ng-dev log file.
Additionally, on commands which fail with an exit code greater than 1, an
error log file is created with the posix timestamp of the commands run time
as an identifier.
PR Close#38599
Update the API used to request a timestamp. The previous API we relied on for this
test application, worldclockapi.com no longer serves times and simply 403s on all
requests. This caused our test to timeout as the HTTP request did not handle a failure
case. By moving to a new api, the HTTP request responds as expected and timeouts
are corrected as there is not longer a pending microtask in the queue.
PR Close#38629
Updates the Github robot to reflect the updated target
labels that are used as part of the canonical versioning
and labeling for the Angular organization.
PR Close#38428
We introduced a new shared configuration for merge script
labels that follow the proposal of:
https://docs.google.com/document/d/197kVillDwx-RZtSVOBtPb4BBIAw0E9RT3q3v6DZkykU
These label semantics and the branching are set up for the Angular
framework with this commit. The goal is that labeling and merging
is consistent between all Angular projects and that clear rules
are defined for branching. This was previously not the case.
PR Close#38428
Prior to this commit, a lot of internal-only class properties and methods (such as `ngOnChanges`)
of the Forms package directives were exposed on angular.io website. These fields are not expected
to be called externally (they are used/invoked by framework only), since they are part of internal
implementations of the following interfaces:
* Angular lifecycle hook interfaces
* ControlValueAccessor interface
* Validator interface
Having these internal-only fields in docs creates unnecessary noise on directive detail pages.
This commit adds the `@nodoc` annotation to these properties and methods to keep fields in the
golden files, but hide them in docs.
PR Close#38583
When extracting i18n messages from source code, the XLIFF
serializers were missing some required attributes on the `<file>`
element.
This commit re-introduces the `original` property to each of XLIFF 1.2
and 2.0 serializers. Also it adds in the required `id` property for the
XLIFF 2.0 seralizer.
Fixes#38570
PR Close#38575
Formats like XLIFF allow the text of the original source to
be included as metadata. This commit fixes the message
extractor to also render this text when available.
PR Close#38536
Some translation file formats would like to be able to render the
text of placeholders taken from the original source files. This commit
adds this information to the extracted messages so that it can be
used in translation file serializers.
PR Close#38536
Previously, exceptions that were not `BabelParseError`s were just ignored.
Such exceptions are most likely programming errors in the package.
They are now re-thrown to ensure that the error is not hidden.
PR Close#38536
This commit is a tidy up of the translate plugin unit tests, but also ensures
that the tests are run in the context of a mock FileSystem. This ensures
that the tests are resilient to future refactors of the plugins that will
require a FileSystem to be initialized.
PR Close#38536
When extracting messages, source-mapping information is used to find
the original location of the message being extracted. This commit will
now include the text from the original source in the message location
so that it can be serialized into the translation file.
PR Close#38536
In preparation for supporting `equiv-text` placeholder information in
extracted translation files, this commit adds these optional properties
to the `ParsedMessage` interface and updates `parseMessage()` to
be able to store them.
PR Close#38536
Close#38361
zone.js monkey patch toString, and check the instance is `Promise` or not by using `instanceof Promise`,
sometimes when Promise is not available, the `instanceof` operation fails
and throw `TypeError: Right-hand side of 'instanceof' is not an object`
this PR check `typeof Promise` equals to function or not to prevent the error.
PR Close#38350
With Typescript 4, `ts.updateIdentifier` is no longer available.
Calling `ts.updateIdentifier` used to return the same node when
`typeArguments` was `undefined` because `node.typeArguments`
was also `undefined`.
Relevant TS code:
```js
function updateIdentifier(node, typeArguments) {
return node.typeArguments !== typeArguments
? updateNode(createIdentifier(ts.idText(node), typeArguments), node)
: node;
}
```
PR Close#38076
This commit adds a guard before throwing any forms errors. This will tree-shake
error messages which cannot be minified. It should also help to reduce the
bundle size of the `forms` package in production by ~20%.
Closes#37697
PR Close#37821
In chapter internationalization (i18n) at section "Deploy multiple locales" the syntax for angular.json is wrong.
This commit fixes the angular.json, when specifying the translation file and the baseHref for a locale.
PR Close#38553
In many testing scenarios, there is a common pattern:
1. Overwrite template (inline or external)
2. Find cursor position
3. Call one of language service APIs
4. Inspect spans in result
In order to faciliate this pattern, this commit refactors
`MockHost.overwrite()` and `MockHost.overwriteInlineTemplate()` to
allow a faux cursor symbol `¦` to be injected into the template, and
the methods will automatically remove it before updating the script snapshot.
Both methods will return the cursor position and the new text without
the cursor symbol.
This makes testing very convenient. Here's a typical example:
```ts
const {position, text} = mockHost.overwrite('template.html', `{{ ti¦tle }}`);
const quickInfo = ngLS.getQuickInfoAtPosition('template.html', position);
const {start, length} = quickInfo!.textSpan;
expect(text.substring(start, start + length)).toBe('title');
```
PR Close#38552
This commit introduces two visitors, one for Template AST and the other
for Expression AST to allow us to easily find the node that most closely
corresponds to a given cursor position.
This is crucial because many language service APIs take in a `position`
parameter, and the information returned depends on how well we can find
a good candidate node.
In View Engine implementation of language service, the search for the node
and the processing of information to return the result are strongly coupled.
This makes the code hard to understand and hard to debug because the stack
trace is often littered with layers of visitor calls.
With this new feature, we could test the "searching" part separately and
colocate all the logic (aka hacks) that's required to retrieve an accurate
span for a given node.
Right now, only the most "narrow" node is returned by the main exported
function `findNodeAtPosition`. If needed, we could expose the entire AST
path, or expose other methods to provide more context for a node.
Note that due to limitations in the template AST interface, there are
a few known cases where microsyntax spans are not recorded properly.
This will be dealt with in a follow-up PR.
PR Close#38540
Prior to this change, the unary + and - operators would be parsed as `x - 0`
and `0 - x` respectively. The runtime semantics of these expressions are
equivalent, however they may introduce inaccurate template type checking
errors as the literal type is lost, for example:
```ts
@Component({
template: `<button [disabled]="isAdjacent(-1)"></button>`
})
export class Example {
isAdjacent(direction: -1 | 1): boolean { return false; }
}
```
would incorrectly report a type-check error:
> error TS2345: Argument of type 'number' is not assignable to parameter
of type '-1 | 1'.
Additionally, the translated expression for the unary + operator would be
considered as arithmetic expression with an incompatible left-hand side:
> error TS2362: The left-hand side of an arithmetic operation must be of
type 'any', 'number', 'bigint' or an enum type.
To resolve this issues, the implicit transformation should be avoided.
This commit adds a new unary AST node to represent these expressions,
allowing for more accurate type-checking.
Fixes#20845Fixes#36178
PR Close#37918
We had a couple of places where we were assuming that if a particular
symbol has a value, then it will exist at runtime. This is true in most cases,
but it breaks down for `const` enums.
Fixes#38513.
PR Close#38542
When creating a commit with the git cli, git pre-populates the editor
used to enter the commit message with some comments (i.e. lines starting
with `#`). These comments contain helpful instructions or information
regarding the changes that are part of the commit. As happens with all
commit message comments, they are removed by git and do not end up in
the final commit message.
However, the file that is passed to the `commit-msg` to be validated
still contains these comments. This may affect the outcome of the commit
message validation. In such cases, the author will not realize that the
commit message is not in the desired format until the linting checks
fail on CI (which validates the final commit messages and is not
affected by this issue), usually several minutes later.
Possible ways in which the commit message validation outcome can be
affected:
- The minimum body length check may pass incorrectly, even if there is
no actual body, because the comments are counted as part of the body.
- The maximum line length check may fail incorrectly due to a very long
line in the comments.
This commit fixes the problem by removing comment lines before
validating a commit message.
Fixes#37865
PR Close#38438
At some places external link icons appear as a subscript. For example
8366effeec/aio/content/guide/roadmap.md\#L37
this commit places external link icons in the middle to improve there
positioning in a line.
PR Close#38410
updating my twitter handle and bio as it is changed from
Angular and Web Tech to Angular also the
twitter handle is changed to SantoshYadavDev
PR Close#37967
Previously, if `useLegacyIds` was enabled, the message extractor
was always rendering the legacy message ids in translation
files even if an explicit "custom message id" had been provided
in the original message.
PR Close#38498
Fix a bug in the HTML sanitizer where an unclosed iframe tag would
result in an escaped closing body tag as the output:
_sanitizeHtml(document, '<iframe>') => '</body>'
This closing body tag comes from the DOMParserHelper where the HTML to be
sanitized is wrapped with surrounding body tags. When an opening iframe
tag is parsed by DOMParser, which DOMParserHelper uses, everything up
until its matching closing tag is consumed as a text node. In the above
example this includes the appended closing body tag.
By removing the explicit closing body tag from the DOMParserHelper and
relying on the body tag being closed implicitly at the end, the above
example is sanitized as expected:
_sanitizeHtml(document, '<iframe>') => ''
PR Close#38454
Previously nested container placeholders (i.e. HTML elements) were
not being fully parsed from translation files. This resulted in bad
translation of messages that contain these placeholders.
Note that this causes the canonical message ID to change for
such messages. Currently all messages generated from
templates use "legacy" message ids that are not affected by
this change, so this fix should not be seen as a breaking change.
Fixes#38422
PR Close#38452
When creating a `ParsedTranslation` from a set of message parts and
placeholder names a textual representation of the message is computed.
Previously the last placeholder and text segment were missing from this
computed message string.
PR Close#38452
This commit adds a `getTemplateOfComponent` method to the
`TemplateTypeChecker` API, which retrieves the actual nodes parsed and used
by the compiler for template type-checking. This is advantageous for the
language service, which may need to query other APIs in
`TemplateTypeChecker` that require the same nodes used to bind the template
while generating the TCB.
Fixes#38352
PR Close#38355
In general, the router only matches and loads a single Route config tree. However,
named outlets with empty paths are a special case where the router can
and should actually match two different `Route`s and ensure that the
modules are loaded for each match.
This change updates the "ApplyRedirects" stage to ensure that named
outlets with empty paths finish loading their configs before proceeding
to the next stage in the routing pipe. This is necessary because if the
named outlet has `loadChildren` but the associated lazy config is not loaded
before following stages attempt to match and activate relevant `Route`s,
an error will occur.
fixes#12842
PR Close#38379
Close#38526, #38516, #38513
After update to `APF`, the `directories` and `files` options are not compatible,
so we need to remove those fileds to make sure everything work as expected.
PR Close#38528
Creates a tool within ng-dev to checkout a pending PR from the upstream repository. This automates
an action that many developers on the Angular team need to do periodically in the process of testing
and reviewing incoming PRs.
Example usage:
ng-dev pr checkout <pr-number>
PR Close#38474
This commit introduces a new subscription in the `routerLinkActive` directive which triggers an update
when any of its associated routerLinks have changes. `RouterLinkActive` not only needs to know when
links are added or removed, but it also needs to know about if a link it already knows about
changes in some way.
Quick note that `from...mergeAll` is used instead of just a simple
`merge` (or `scheduled...mergeAll`) to avoid introducing new rxjs
operators in order to keep bundle size down.
Fixes#18469
PR Close#38511
This commit introduces a new subscription in the `routerLinkActive` directive which triggers an update
when any of its associated routerLinks have changes. `RouterLinkActive` not only needs to know when
links are added or removed, but it also needs to know about if a link it already knows about
changes in some way.
Quick note that `from...mergeAll` is used instead of just a simple
`merge` (or `scheduled...mergeAll`) to avoid introducing new rxjs
operators in order to keep bundle size down.
Fixes#18469
PR Close#38349
Now that Ivy compiler has a proper `TemplateTypeChecker` interface
(see https://github.com/angular/angular/pull/38105) we no longer need to
keep the temporary compiler implementation.
The temporary compiler was created to enable testing infrastructure to
be developed for the Ivy language service.
This commit removes the whole `ivy/compiler` directory and moves two
functions `createTypeCheckingProgramStrategy` and
`getOrCreateTypeCheckScriptInfo` to the `LanguageService` class.
Also re-enable the Ivy LS test since it's no longer blocking development.
PR Close#38310
Similarly to the change we landed in the `@angular/core` reflection
capabilities, we need to make sure that ngcc can detect pass-through
delegate constructors for classes using downleveled ES2015 output.
More details can be found in the preceding commit, and in the issue
outlining the problem: #38453.
Fixes#38453.
PR Close#38463
In the Angular Package Format, we always shipped UMD bundles and previously even ES5 module output.
With V10, we removed the ES5 module output but kept the UMD ES5 output.
For this, we were able to remove our second TypeScript transpilation. Instead we started only
building ES2015 output and then downleveled it to ES5 UMD for the NPM packages. This worked
as expected but unveiled an issue in the `@angular/core` reflection capabilities.
In JIT mode, Angular determines constructor parameters (for DI) using the `ReflectionCapabilities`. The
reflection capabilities basically read runtime metadata of classes to determine the DI parameters. Such
metadata can be either stored in static class properties like `ctorParameters` or within TypeScript's `design:params`.
If Angular comes across a class that does not have any parameter metadata, it tries to detect if the
given class is actually delegating to an inherited class. It does this naively in JIT by checking if the
stringified class (function in ES5) matches a certain pattern. e.g.
```js
function MatTable() {
var _this = _super.apply(this, arguments) || this;
```
These patterns are reluctant to changes of the class output. If a class is not recognized properly, the
DI parameters will be assumed empty and the class is **incorrectly** constructed without arguments.
This actually happened as part of v10 now. Since we downlevel ES2015 to ES5 (instead of previously
compiling sources directly to ES5), the class output changed slightly so that Angular no longer detects
it. e.g.
```js
var _this = _super.apply(this, __spread(arguments)) || this;
```
This happens because the ES2015 output will receive an auto-generated constructor if the class
defines class properties. This constructor is then already containing an explicit `super` call.
```js
export class MatTable extends CdkTable {
constructor() {
super(...arguments);
this.disabled = true;
}
}
```
If we then downlevel this file to ES5 with `--downlevelIteration`, TypeScript adjusts the `super` call so that
the spread operator is no longer used (not supported in ES5). The resulting super call is different to the
super call that would have been emitted if we would directly transpile to ES5. Ultimately, Angular no
longer detects such classes as having an delegate constructor -> and DI breaks.
We fix this by expanding the rather naive RegExp patterns used for the reflection capabilities
so that downleveled pass-through/delegate constructors are properly detected. There is a risk
of a false-positive as we cannot detect whether `__spread` is actually the TypeScript spread
helper, but given the reflection patterns already make lots of assumptions (e.g. that `super` is
actually the superclass, we should be fine making this assumption too. The false-positive would
not result in a broken app, but rather in unnecessary providers being injected (as a noop).
Fixes#38453
PR Close#38463
Previously placeholders were only rendered for dynamic interpolation
expressons in `$localize` tagged strings. But there are also potentially
dynamic values in ICU expressions too, so we need to render these as
placeholders when extracting i18n messages into translation files.
PR Close#38484
This commit updates the code to move generated i18n statements into the `consts` field of
ComponentDef to avoid invoking `$localize` function before component initialization (to better
support runtime translations) and also avoid problems with lazy-loading when i18n defs may not
be present in a chunk where it's referenced.
Prior to this change the i18n statements were generated at the top leve:
```
var I18N_0;
if (typeof ngI18nClosureMode !== "undefined" && ngI18nClosureMode) {
var MSG_X = goog.getMsg(“…”);
I18N_0 = MSG_X;
} else {
I18N_0 = $localize('...');
}
defineComponent({
// ...
template: function App_Template(rf, ctx) {
i0.ɵɵi18n(2, I18N_0);
}
});
```
This commit updates the logic to generate the following code instead:
```
defineComponent({
// ...
consts: function() {
var I18N_0;
if (typeof ngI18nClosureMode !== "undefined" && ngI18nClosureMode) {
var MSG_X = goog.getMsg(“…”);
I18N_0 = MSG_X;
} else {
I18N_0 = $localize('...');
}
return [
I18N_0
];
},
template: function App_Template(rf, ctx) {
i0.ɵɵi18n(2, 0);
}
});
```
Also note that i18n template instructions now refer to the `consts` array using an index
(similar to other template instructions).
PR Close#38404
This commit fixes a regression from "fix(common): ensure
scrollRestoration is writable (#30630)" that caused scrolling to not
happen at all in browsers that do not support scroll restoration. The
issue was that `supportScrollRestoration` was updated to return `false`
if a browser did not have a writable `scrollRestoration`. However, the
previous behavior was that the function would return `true` if
`window.scrollTo` was defined. Every scrolling function in the
`ViewportScroller` used `supportScrollRestoration` and, with the update
in bb88c9fa3daac80086efbda951d81c159e3840f4, no scrolling would be
performed if a browser did not have writable `scrollRestoration` but
_did_ have `window.scrollTo`.
Note, that this failure was detected in the saucelabs tests. IE does not
support scroll restoration so IE tests were failing.
PR Close#38468
When removal of one view causes removal of another one from the same
ViewContainerRef it triggers an error with views length calculation. This commit
fixes this bug by removing a view from the list of available views before invoking
actual view removal (which might be recursive and relies on the length of the list
of available views).
Fixes#38201.
PR Close#38317
For a template that contains for example `<span *ngIf="first"></span>`
there's no need to render the `NgIf` guard expression, as the child
scope does not have any type-checking statements, so any narrowing
effect of the guard is not applicable.
This seems like a minor improvement, however it reduces the number of
flow-node antecedents that TypeScript needs to keep into account for
such cases, resulting in an overall reduction of type-checking time.
PR Close#38418
The template type-checker would always generate a directive declaration
even if its type was never used. For example, directives without any
input nor output bindings nor exportAs references don't need the
directive to be declared, as its type would never be used.
This commit makes the `TcbOp`s that are responsible for declaring a
directive as optional, such that they are only executed when requested
from another operation.
PR Close#38418
The template type-checker would generate a statement with a call
expression for all DOM elements in a template of the form:
```
const _t1 = document.createElement("div");
```
Profiling has shown that this is a particularly expensive call to
perform type inference on, as TypeScript needs to perform signature
selection of `Document.createElement` and resolve the exact type from
the `HTMLElementTagNameMap`. However, it can be observed that the
statement by itself does not contribute anything to the type-checking
result if `_t1` is not actually used anywhere, which is only rarely the
case---it requires that the element is referenced by its name from
somewhere else in the template. Consequently, the type-checker can skip
generating this statement altogether for most DOM elements.
The effect of this optimization is significant in several phases:
1. Less type-check code to generate
2. Less type-check code to emit and parse again
3. No expensive type inference to perform for the call expression
The effect on phase 3 is the most significant here, as type-checking is
not currently incremental in the sense that only phases 1 and 2 can
be reused from a prior compilation. The actual type-checking of all
templates in phase 3 needs to be repeated on each incremental
compilation, so any performance gains we achieve here are very
beneficial.
PR Close#38418
This commit replaces the old and slow `ReflectiveInjector` that was
deprecated in v5 with the new `Injector`. Note: This change was only
done in the spec files inside the `aio` folder.
While changing this, it was not possible to directly use `Injector.get`
to get the correct typing for the mocked classes. For example:
```typescript
locationService = injector.get<TestLocationService>(LocationService);
```
Fails with:
> Argument of type 'typeof LocationService' is not assignable to parameter
of type 'Type<TestLocationService> | InjectionToken<TestLocationService> |
AbstractType<TestLocationService>'.
Type 'typeof LocationService' is not assignable to type 'Type<TestLocationService>'.
Property 'searchResult' is missing in type 'LocationService' but required in type
'TestLocationService'.
Therefore, it was necessary to first convert to `unknown` and then to
`TestLocationService`.
```typescript
locationService = injector.get(LocationService) as unknown as TestLocationService;
```
PR Close#38408
We should define ngDevMode to false in Closure, but --define only works in the global scope.
With ngDevMode not being set to false, this size tracking test provides little value but a lot of
headache to continue updating the size.
PR Close#38449
The `@HostListener` functions and lifecycle hooks aren't intended to be public API but
do need to appear in the `.d.ts` files or type checking will break. Adding the
nodoc annotation will correctly hide this function on the docs site.
Again, note that `@internal` cannot be used because the result would be
that the functions then do not appear in the `.d.ts` files. This would
break lifecycle hooks because the class would be seen as not
implementing the interface correctly. This would also break
`HostListener` because the compiled templates would attempt to call the
`onClick` functions, but those would also not appear in the `d.ts` and
would produce errors like "Property 'onClick' does not exist on type 'RouterLinkWithHref'".
PR Close#38448
Fixes an error if a CSS custom property, used inside a host binding, has a
number in its name. The error is thrown because the styling parser only
expects characters from A to Z,dashes, underscores and a handful of other
characters.
Fixes#37292.
PR Close#38432
Previously we added a browser target for `firefox` into the
dev-infra package. It looks like as part of this change, we
accidentally switched the local web testing target to `firefox`.
Web tests are not commonly run locally as we use Domino and
NodeJS tests for primary development. Sometimes though we intend
to run tests in a browser. This would currently work with Firefox
but not on Windows (as Firefox is a noop there in Bazel).
This commit switches the primary browser back to `chromium`. Also
Firefox has been added as a second browser to web testing targets.
This allows us to reduce browsers in the legacy Saucelabs job. i.e.
not running Chrome and Firefox there. This should increase stability
and speed up the legacy job (+ reduced rate limit for Saucelabs).
PR Close#38435
Previously commit message types were provided as part of the ng-dev config in the repository
using the ng-dev toolset. This change removes this configuration expectation and instead
predefines the valid types for commit messages.
Additionally, with this new unified set of types requirements around providing a scope have
been put in place. Scopes are either required, optional or forbidden for a given commit
type.
PR Close#38430
We recently updated the benchpress package to have a more loose
Angular core peer dependency, and less other unused dependencies.
We should make sure to use that in the dev-infra package so that
peer dependencies can be satisified in consumer projects, and so
that less unused dependencies are brought into projects.
PR Close#38440
When a commit message fails validation, rather than throwing out the commit message entirely
the commit message is saved into a draft file and restored on the next commit attempt.
PR Close#38304
Runs the `ng-dev format changed` command whenever the `git commit` command is
run. As all changes which are checked by CI will require this check passing, this
change can prevent needless roundtrips to correct lint/formatting errors. This
automatic formatting can be bypassed with the `--no-verify` flag on the `git commit`
command.
PR Close#38402
Adds an ng-dev formatter option to format all of the staged files. This will can
be used to format only the staged files during the pre-commit hook.
PR Close#38402
Currently the Closure-related tests are not tree-shaking the dev-mode-only content, thus payload
size checks are failing even if dev-mode-only content is added.
The 2e9fdbde9e commit
added some logic to JIT compiler, which is likely triggered the payload size increase. This commit
updates the payload size limits for Closure-related test to get master and patch branches back to
the "green" state.
PR Close#38411
The compiler does not currently report errors when there's an `@Input()`
for a `private`, `protected`, or `readonly` directive/component class member.
This change adds an option to enable reporting errors when a template
attempts to bind to one of these restricted input fields.
PR Close#38249
Prior to this change, the template type checker would always use a
type-constructor to instantiate a directive. This type-constructor call
serves two purposes:
1. Infer any generic types for the directive instance from the inputs
that are passed in.
2. Type check the inputs that are passed into the directive's inputs.
The first purpose is only relevant when the directive actually has any
generic types and using a type-constructor for these cases inhibits
a type-check performance penalty, as a type-constructor's signature is
quite complex and needs to be generated for each directive.
This commit refactors the generated type-check blocks to only generate
a type-constructor call for directives that have generic types. Type
checking of inputs is achieved by generating individual statements for
all inputs, using assignments into the directive's fields.
Even if a type-constructor is used for type-inference of generic types
will the input checking also be achieved using the individual assignment
statements. This is done to support the rework of the language service,
which will start to extract symbol information from the type-check
blocks.
As a future optimization, it may be possible to reduce the number of
inputs passed into a type-constructor to only those inputs that
contribute the the type-inference of the generics. As this is not a
necessity at the moment this is left as follow-up work.
Closes#38185
PR Close#38249
"Quote expressions" are expressions that start with an identifier followed by a
comma, allowing arbitrary syntax to follow. These kinds of expressions would
throw a an error in the template type checker, which would make them hard to
track down. As quote expressions are not generally used at all, the error would
typically occur for URLs that would inadvertently occur in a binding:
```html
<a [href]="https://example.com"></a>
```
This commit lets such bindings be inferred as the `any` type.
Fixes#36568
Resolves FW-2051
PR Close#37917
In TypeScript 3.8 support was added for type-only imports, which only brings in
the symbol as a type, not their value. The Angular compiler did not yet take
the type-only keyword into account when representing symbols in type positions
as value expressions. The class metadata that the compiler emits would include
the value expression for its parameter types, generating actual imports as
necessary. For type-only imports this should not be done, as it introduces an
actual import of the module that was originally just a type-only import.
This commit lets the compiler deal with type-only imports specially, preventing
a value expression from being created.
Fixes#37900
PR Close#37912
When using the safe navigation operator in a binding expression, a temporary
variable may be used for storing the result of a side-effectful call.
For example, the following template uses a pipe and a safe property access:
```html
<app-person-view [enabled]="enabled" [firstName]="(person$ | async)?.name"></app-person-view>
```
The result of the pipe evaluation is stored in a temporary to be able to check
whether it is present. The temporary variable needs to be declared in a separate
statement and this would also cause the full expression itself to be pulled out
into a separate statement. This would compile into the following
pseudo-code instructions:
```js
var temp = null;
var firstName = (temp = pipe('async', ctx.person$)) == null ? null : temp.name;
property('enabled', ctx.enabled)('firstName', firstName);
```
Notice that the pipe evaluation happens before evaluating the `enabled` binding,
such that the runtime's internal binding index would correspond with `enabled`,
not `firstName`. This introduces a problem when the pipe uses `WrappedValue` to
force a change to be detected, as the runtime would then mark the binding slot
corresponding with `enabled` as dirty, instead of `firstName`. This results
in the `enabled` binding to be updated, triggering setters and affecting how
`OnChanges` is called.
In the pseudo-code above, the intermediate `firstName` variable is not strictly
necessary---it only improved readability a bit---and emitting it inline with
the binding itself avoids the out-of-order execution of the pipe:
```js
var temp = null;
property('enabled', ctx.enabled)
('firstName', (temp = pipe('async', ctx.person$)) == null ? null : temp.name);
```
This commit introduces a new `BindingForm` that results in the above code to be
generated and adds compiler and acceptance tests to verify the proper behavior.
Fixes#37194
PR Close#37911
In JIT compiled apps, component definitions are compiled upon first
access. For a component class `A` that extends component class `B`, the
`B` component is also compiled when the `InheritDefinitionFeature` runs
during the compilation of `A` before it has finalized. A problem arises
when the compilation of `B` would flush the NgModule scoping queue,
where the NgModule declaring `A` is still pending. The scope information
would be applied to the definition of `A`, but its compilation is still
in progress so requesting the component definition would compile `A`
again from scratch. This "inner compilation" is correctly assigned the
NgModule scope, but once the "outer compilation" of `A` finishes it
would overwrite the inner compilation's definition, losing the NgModule
scope information.
In summary, flushing the NgModule scope queue could trigger a reentrant
compilation, where JIT compilation is non-reentrant. To avoid the
reentrant compilation, a compilation depth counter is introduced to
avoid flushing the NgModule scope during nested compilations.
Fixes#37105
PR Close#37795
When navigations coming from Angular router we may have a payload stored in state property. When this
exists, set extras's state to the payload.
PR Close#28176
The changes in https://github.com/angular/angular/pull/38368 split `render3/i18n.ts` files into
smaller scripts, but the PullApprove config was not updated to reflect that. This commit updates
the PullApprove config to reflect the recent changes in i18n-related files.
PR Close#38403
Queries weren't matching directives that provide themselves via string
injection tokens, because the assumption was that any string passed to
a query decorator refers to a template reference.
These changes make it so we match both template references and
providers while giving precedence to the template references.
Fixes#38313.
Fixes#38315.
PR Close#38321
When we were outputting class members for `setClassMetadata` calls,
we were using the string representation of the member name. This can
lead to us generating invalid code when the name contains dashes and
is quoted (e.g. `@Output() 'has-dashes' = new EventEmitter()`), because
the quotes will be stripped for the string representation.
These changes fix the issue by using the original name AST node that was
used for the declaration and which knows whether it's supposed to be
quoted or not.
Fixes#38311.
PR Close#38387
This commit contains no changes to code. It only breaks `i18n.ts` file
into `i18n.ts` + `i18n_apply.ts` + `i18n_parse.ts` +
`i18n_postprocess.ts` for easier maintenance.
PR Close#38368
Defer loading the wildcard module so that it is not loaded until
subscribed to. This fixes an issue where it was being eagerly loaded.
As an example, wildcard module loading should only occur after all other potential
matches have been exhausted. A test case for this was also added to
demonstrate the fix.
Fixes#25494
PR Close#38348
When a ServerStylesHost instance is destroyed, all of the shared styles added to the DOM
head element by that instance should be removed. Without this removal, over time a large
number of style rules will build up and cause extra memory pressure. This brings the
ServerStylesHost in line with the DomStylesHost used by the platform browser, which
performs this same cleanup.
PR Close#38367
The currently selected ICU was incorrectly being stored it `TNode`
rather than in `LView`.
Remove: `TIcuContainerNode.activeCaseIndex`
Add: `LView[TIcu.currentCaseIndex]`
PR Close#38345
# comment that will be added to a PR when there is a conflict, leave empty or set to false to disable
mergeConflictComment:"Hi @{{PRAuthor}}! This PR has merge conflicts due to recent upstream merges.
\nPlease help to unblock it by resolving these conflicts. Thanks!"
mergeConflictComment:"Hi @{{PRAuthor}}! This PR has merge conflicts due to recent upstream merges.\nPlease help to unblock it by resolving these conflicts. Thanks!"
# label to monitor
mergeLabel:"PR action: merge"
mergeLabel:"action: merge"
# adding any of these labels will also add the merge label
mergeLinkedLabels:
- "PR action: merge-assistance"
- "action: merge-assistance"
# list of checks that will determine if the merge label can be added
checks:
@ -94,17 +95,17 @@ merge:
# whether the PR shouldn't have a conflict with the base branch
noConflict:true
# list of labels that a PR needs to have, checked with a regexp (e.g. "PR target:" will work for the label "PR target: master")
# list of labels that a PR needs to have, checked with a regexp (e.g. "target:" will work for the label "target: master")
requiredLabels:
- "PR target: *"
- "target: *"
- "cla: yes"
# list of labels that a PR shouldn't have, checked after the required labels with a regexp
forbiddenLabels:
- "PR target: TBD"
- "PR action: cleanup"
- "PR action: review"
- "PR state: blocked"
- "target: TBD"
- "action: cleanup"
- "action: review"
- "state: blocked"
- "cla: no"
# list of PR statuses that need to be successful
@ -121,12 +122,7 @@ merge:
# the comment that will be added when the merge label is added despite failing checks, leave empty or set to false to disable
# {{MERGE_LABEL}} will be replaced by the value of the mergeLabel option
# {{PLACEHOLDER}} will be replaced by the list of failing checks
mergeRemovedComment:"I see that you just added the `{{MERGE_LABEL}}` label, but the following checks are still failing:
\n{{PLACEHOLDER}}
\n
\n**If you want your PR to be merged, it has to pass all the CI checks.**
\n
\nIf you can't get the PR to a green state due to flakes or broken master, please try rebasing to master and/or restarting the CI job. If that fails and you believe that the issue is not due to your change, please contact the caretaker and ask for help."
mergeRemovedComment:"I see that you just added the `{{MERGE_LABEL}}` label, but the following checks are still failing:\n{{PLACEHOLDER}}\n\n**If you want your PR to be merged, it has to pass all the CI checks.**\n\nIf you can't get the PR to a green state due to flakes or broken master, please try rebasing to master and/or restarting the CI job. If that fails and you believe that the issue is not due to your change, please contact the caretaker and ask for help."
# options for the triage plugin
triage:
@ -186,4 +182,4 @@ rerunCircleCI:
# set to true to disable
disabled:false
# the label which when added triggers a rerun of the default CircleCI workflow
* **common:** narrow `NgIf` context variables in template type checker ([#36627](https://github.com/angular/angular/issues/36627)) ([9c8bc4a](https://github.com/angular/angular/commit/9c8bc4a))
* **compiler:** mark `NgModuleFactory` construction as not side effectful ([#38147](https://github.com/angular/angular/issues/38147)) ([7f8c222](https://github.com/angular/angular/commit/7f8c222))
* **http:** Fix error message when we call jsonp without importing HttpClientJsonpModule ([#38756](https://github.com/angular/angular/issues/38756)) ([3902ec0](https://github.com/angular/angular/commit/3902ec0))
* **ngcc:** fix compilation of `ChangeDetectorRef` in pipe constructors ([#38892](https://github.com/angular/angular/issues/38892)) ([093c3a1](https://github.com/angular/angular/commit/093c3a1)), closes [#38666](https://github.com/angular/angular/issues/38666) [#38883](https://github.com/angular/angular/issues/38883)
### Reverts
* feat(router): better warning message when a router outlet has not been instantiated ([#38920](https://github.com/angular/angular/issues/38920)) ([04d0aa6](https://github.com/angular/angular/commit/04d0aa6))
<aname="10.1.2"></a>
## 10.1.2 (2020-09-16)
### Bug Fixes
* **compiler:** detect pipes in ICUs in template binder ([#38810](https://github.com/angular/angular/issues/38810)) ([ec2dbe7](https://github.com/angular/angular/commit/ec2dbe7)), closes [#38539](https://github.com/angular/angular/issues/38539) [#38539](https://github.com/angular/angular/issues/38539) [#38539](https://github.com/angular/angular/issues/38539)
* **core:** clear the `RefreshTransplantedView` when detached ([#38768](https://github.com/angular/angular/issues/38768)) ([edb7f90](https://github.com/angular/angular/commit/edb7f90)), closes [#38619](https://github.com/angular/angular/issues/38619)
* **localize:** ensure that `formatOptions` is optional ([#38787](https://github.com/angular/angular/issues/38787)) ([a47383d](https://github.com/angular/angular/commit/a47383d))
* **router:** Ensure routes are processed in priority order and only if needed ([#38780](https://github.com/angular/angular/issues/38780)) ([9c51ba3](https://github.com/angular/angular/commit/9c51ba3)), closes [#38691](https://github.com/angular/angular/issues/38691)
* **compiler-cli:** only emit directive/pipe references that are used ([#38843](https://github.com/angular/angular/issues/38843)) ([5658405](https://github.com/angular/angular/commit/5658405))
* **compiler-cli:** optimize computation of type-check scope information ([#38843](https://github.com/angular/angular/issues/38843)) ([ebede67](https://github.com/angular/angular/commit/ebede67))
* **ngcc:** introduce cache for sharing data across entry-points ([#38840](https://github.com/angular/angular/issues/38840)) ([58411e7](https://github.com/angular/angular/commit/58411e7))
* **ngcc:** reduce maximum worker count ([#38840](https://github.com/angular/angular/issues/38840)) ([ea36466](https://github.com/angular/angular/commit/ea36466))
<aname="10.1.1"></a>
## 10.1.1 (2020-09-09)
### Bug Fixes
* **compiler:** correct confusion between field and property names ([#38685](https://github.com/angular/angular/issues/38685)) ([a1c34c6](https://github.com/angular/angular/commit/a1c34c6))
* **compiler-cli:** ensure that a declaration is available in type-to-value conversion ([#38684](https://github.com/angular/angular/issues/38684)) ([56d5ff2](https://github.com/angular/angular/commit/56d5ff2)), closes [#38670](https://github.com/angular/angular/issues/38670)
* **core:** reset `tView` between tests in Ivy TestBed ([#38659](https://github.com/angular/angular/issues/38659)) ([efc7606](https://github.com/angular/angular/commit/efc7606)), closes [#38600](https://github.com/angular/angular/issues/38600)
* **localize:** do not expose NodeJS typings in $localize runtime code ([#38700](https://github.com/angular/angular/issues/38700)) ([4de8dc3](https://github.com/angular/angular/commit/4de8dc3)), closes [#38692](https://github.com/angular/angular/issues/38692)
* **localize:** render location in XLIFF 2 even if there is no metadata ([#38713](https://github.com/angular/angular/issues/38713)) ([ab4f953](https://github.com/angular/angular/commit/ab4f953)), closes [#38705](https://github.com/angular/angular/issues/38705)
* **router:** If users are using the Alt key when clicking the router links, prioritize browser’s default behavior ([#38375](https://github.com/angular/angular/issues/38375)) ([309709d](https://github.com/angular/angular/commit/309709d))
### Performance Improvements
* **core:** use `ngDevMode` to tree-shake error messages ([#38612](https://github.com/angular/angular/issues/38612)) ([b084bff](https://github.com/angular/angular/commit/b084bff))
<aname="10.1.0"></a>
# 10.1.0 (2020-09-02)
### Features
* **bazel:** provide LinkablePackageInfo from ng_module ([#37623](https://github.com/angular/angular/issues/37623)) ([6898eab](https://github.com/angular/angular/commit/6898eab))
* **common:** add ReadonlyMap in place of Map in keyValuePipe ([#37311](https://github.com/angular/angular/issues/37311)) ([3373453](https://github.com/angular/angular/commit/3373453)), closes [#37308](https://github.com/angular/angular/issues/37308)
* **compiler-cli:** add `SourceFile.getOriginalLocation()` to sourcemaps package ([#32912](https://github.com/angular/angular/issues/32912)) ([6abb8d0](https://github.com/angular/angular/commit/6abb8d0))
* **compiler-cli:** Add compiler option to report errors when assigning to restricted input fields ([#38249](https://github.com/angular/angular/issues/38249)) ([71138f6](https://github.com/angular/angular/commit/71138f6))
* **compiler-cli:** add support for TypeScript 4.0 ([#38076](https://github.com/angular/angular/issues/38076)) ([0fc44e0](https://github.com/angular/angular/commit/0fc44e0))
* **compiler-cli:** explain why an expression cannot be used in AOT compilations ([#37587](https://github.com/angular/angular/issues/37587)) ([712f1bd](https://github.com/angular/angular/commit/712f1bd))
* **compiler:** support unary operators for more accurate type checking ([#37918](https://github.com/angular/angular/issues/37918)) ([874792d](https://github.com/angular/angular/commit/874792d)), closes [#20845](https://github.com/angular/angular/issues/20845) [#36178](https://github.com/angular/angular/issues/36178)
* **core:** rename async to waitForAsync to avoid confusing ([#37583](https://github.com/angular/angular/issues/37583)) ([8f07429](https://github.com/angular/angular/commit/8f07429))
* **core:** support injection token as predicate in queries ([#37506](https://github.com/angular/angular/issues/37506)) ([97dc85b](https://github.com/angular/angular/commit/97dc85b)), closes [#21152](https://github.com/angular/angular/issues/21152) [#36144](https://github.com/angular/angular/issues/36144)
* **core:** update reference and doc to change `async` to `waitAsync`. ([#37583](https://github.com/angular/angular/issues/37583)) ([8fbf40b](https://github.com/angular/angular/commit/8fbf40b))
* **forms:** AbstractControl to store raw validators in addition to combined validators function ([#37881](https://github.com/angular/angular/issues/37881)) ([ad7046b](https://github.com/angular/angular/commit/ad7046b))
* **localize:** allow duplicate messages to be handled during extraction ([#38082](https://github.com/angular/angular/issues/38082)) ([cf9a47b](https://github.com/angular/angular/commit/cf9a47b)), closes [#38077](https://github.com/angular/angular/issues/38077)
* **platform-server:** add option for absolute URL HTTP support ([#37539](https://github.com/angular/angular/issues/37539)) ([d37049a](https://github.com/angular/angular/commit/d37049a)), closes [#37071](https://github.com/angular/angular/issues/37071)
* **router:** better warning message when a router outlet has not been instantiated ([#30246](https://github.com/angular/angular/issues/30246)) ([1609815](https://github.com/angular/angular/commit/1609815))
### Bug Fixes
* **bazel:** fix integration test for bazel building ([#38629](https://github.com/angular/angular/issues/38629)) ([dd82f2f](https://github.com/angular/angular/commit/dd82f2f))
* **common:** date pipe gives wrong week number ([#37632](https://github.com/angular/angular/issues/37632)) ([ef1fb6d](https://github.com/angular/angular/commit/ef1fb6d)), closes [#33961](https://github.com/angular/angular/issues/33961)
* **common:** narrow `NgIf` context variables in template type checker ([#36627](https://github.com/angular/angular/issues/36627)) ([9c8bc4a](https://github.com/angular/angular/commit/9c8bc4a))
* **compiler-cli:** avoid creating value expressions for symbols from type-only imports ([#37912](https://github.com/angular/angular/issues/37912)) ([18098d3](https://github.com/angular/angular/commit/18098d3)), closes [#37900](https://github.com/angular/angular/issues/37900)
* **compiler-cli:** ensure source-maps can handle webpack:// protocol ([#32912](https://github.com/angular/angular/issues/32912)) ([decd95e](https://github.com/angular/angular/commit/decd95e))
* **compiler-cli:** only read source-map comment from last line ([#32912](https://github.com/angular/angular/issues/32912)) ([07a07e3](https://github.com/angular/angular/commit/07a07e3))
* **compiler-cli:** type-check inputs that include undefined when there's coercion members ([#38273](https://github.com/angular/angular/issues/38273)) ([7525f3a](https://github.com/angular/angular/commit/7525f3a))
* **compiler:** incorrectly inferring namespace for HTML nodes inside SVG ([#38477](https://github.com/angular/angular/issues/38477)) ([0dda97e](https://github.com/angular/angular/commit/0dda97e)), closes [#37218](https://github.com/angular/angular/issues/37218)
* **compiler:** mark `NgModuleFactory` construction as not side effectful ([#38147](https://github.com/angular/angular/issues/38147)) ([7f8c222](https://github.com/angular/angular/commit/7f8c222))
* **core:** Allow modification of lifecycle hooks any time before bootstrap ([#35464](https://github.com/angular/angular/issues/35464)) ([737506e](https://github.com/angular/angular/commit/737506e)), closes [#30497](https://github.com/angular/angular/issues/30497)
* **core:** detect DI parameters in JIT mode for downleveled ES2015 classes ([#38463](https://github.com/angular/angular/issues/38463)) ([ca07da4](https://github.com/angular/angular/commit/ca07da4)), closes [#38453](https://github.com/angular/angular/issues/38453)
* **core:** do not trigger CSP alert/report in Firefox and Chrome ([#36578](https://github.com/angular/angular/issues/36578)) ([#36578](https://github.com/angular/angular/issues/36578)) ([b950d46](https://github.com/angular/angular/commit/b950d46)), closes [#25214](https://github.com/angular/angular/issues/25214)
* **core:** move generated i18n statements to the `consts` field of ComponentDef ([#38404](https://github.com/angular/angular/issues/38404)) ([cb05c01](https://github.com/angular/angular/commit/cb05c01))
* **elements:** run strategy methods in correct zone ([#37814](https://github.com/angular/angular/issues/37814)) ([8df888d](https://github.com/angular/angular/commit/8df888d)), closes [#24181](https://github.com/angular/angular/issues/24181)
* **forms:** handle form groups/arrays own pending async validation ([#22575](https://github.com/angular/angular/issues/22575)) ([77b62a5](https://github.com/angular/angular/commit/77b62a5)), closes [#10064](https://github.com/angular/angular/issues/10064)
* **language-service:** non-existent module format in package output ([#37623](https://github.com/angular/angular/issues/37623)) ([413a0fb](https://github.com/angular/angular/commit/413a0fb))
* **localize:** render text of extracted placeholders ([#38536](https://github.com/angular/angular/issues/38536)) ([14e90be](https://github.com/angular/angular/commit/14e90be))
* **router:** remove parenthesis for primary outlet segment after removing auxiliary outlet segment ([#24656](https://github.com/angular/angular/issues/24656)) ([#37163](https://github.com/angular/angular/issues/37163)) ([71f008f](https://github.com/angular/angular/commit/71f008f))
* **router:** restore 'history.state' object for navigations coming from Angular router ([#28108](https://github.com/angular/angular/issues/28108)) ([#28176](https://github.com/angular/angular/issues/28176)) ([df76a20](https://github.com/angular/angular/commit/df76a20))
### Code Refactoring
* **router:** export DefaultRouteReuseStrategy to Router public_api ([#31575](https://github.com/angular/angular/issues/31575)) ([ca79880](https://github.com/angular/angular/commit/ca79880))
### Performance Improvements
* **compiler-cli:** don't emit template guards when child scope is empty ([#38418](https://github.com/angular/angular/issues/38418)) ([1388c17](https://github.com/angular/angular/commit/1388c17))
* **compiler-cli:** fix regressions in incremental program reuse ([#37641](https://github.com/angular/angular/issues/37641)) ([5103d90](https://github.com/angular/angular/commit/5103d90))
* **compiler-cli:** only generate directive declarations when used ([#38418](https://github.com/angular/angular/issues/38418)) ([fb8f4b4](https://github.com/angular/angular/commit/fb8f4b4))
* **compiler-cli:** only generate type-check code for referenced DOM elements ([#38418](https://github.com/angular/angular/issues/38418)) ([f42e6ce](https://github.com/angular/angular/commit/f42e6ce))
* **forms:** use internal `ngDevMode` flag to tree-shake error messages in prod builds ([#37821](https://github.com/angular/angular/issues/37821)) ([201a546](https://github.com/angular/angular/commit/201a546)), closes [#37697](https://github.com/angular/angular/issues/37697)
* **ngcc:** shortcircuit tokenizing in ESM dependency host ([#37639](https://github.com/angular/angular/issues/37639)) ([bd7f440](https://github.com/angular/angular/commit/bd7f440))
* **ngcc:** use `EntryPointManifest` to speed up noop `ProgramBaseEntryPointFinder` ([#37665](https://github.com/angular/angular/issues/37665)) ([9318e23](https://github.com/angular/angular/commit/9318e23))
* **compiler-cli:** adding references to const enums in runtime code ([#38542](https://github.com/angular/angular/issues/38542)) ([814b436](https://github.com/angular/angular/commit/814b436)), closes [#38513](https://github.com/angular/angular/issues/38513)
* **core:** remove closing body tag from inert DOM builder ([#38454](https://github.com/angular/angular/issues/38454)) ([5528536](https://github.com/angular/angular/commit/5528536))
* **localize:** include the last placeholder in parsed translation text ([#38452](https://github.com/angular/angular/issues/38452)) ([57d1a48](https://github.com/angular/angular/commit/57d1a48))
* **localize:** parse all parts of a translation with nested HTML ([#38452](https://github.com/angular/angular/issues/38452)) ([07b99f5](https://github.com/angular/angular/commit/07b99f5)), closes [#38422](https://github.com/angular/angular/issues/38422)
* **core:** detect DI parameters in JIT mode for downleveled ES2015 classes ([#38500](https://github.com/angular/angular/issues/38500)) ([863acb6](https://github.com/angular/angular/commit/863acb6)), closes [#38453](https://github.com/angular/angular/issues/38453)
* **core:** error if CSS custom property in host binding has number in name ([#38432](https://github.com/angular/angular/issues/38432)) ([cb83b8a](https://github.com/angular/angular/commit/cb83b8a)), closes [#37292](https://github.com/angular/angular/issues/37292)
* **compiler:** evaluate safe navigation expressions in correct binding order ([#37911](https://github.com/angular/angular/issues/37911)) ([f5b9d87](https://github.com/angular/angular/commit/f5b9d87)), closes [#37194](https://github.com/angular/angular/issues/37194)
* **compiler-cli:** avoid creating value expressions for symbols from type-only imports ([#38415](https://github.com/angular/angular/issues/38415)) ([ca2b4bc](https://github.com/angular/angular/commit/ca2b4bc)), closes [#37912](https://github.com/angular/angular/issues/37912)
* **compiler-cli:** infer quote expressions as any type in type checker ([#37917](https://github.com/angular/angular/issues/37917)) ([5b87c67](https://github.com/angular/angular/commit/5b87c67)), closes [#36568](https://github.com/angular/angular/issues/36568)
* **compiler-cli:** mark eager `NgModuleFactory` construction as not side effectful ([#38320](https://github.com/angular/angular/issues/38320)) ([016a41b](https://github.com/angular/angular/commit/016a41b)), closes [#38147](https://github.com/angular/angular/issues/38147)
* **compiler-cli:** match wrapHost parameter types within plugin interface ([#38004](https://github.com/angular/angular/issues/38004)) ([df01a82](https://github.com/angular/angular/commit/df01a82))
* **compiler-cli:** preserve quotes in class member names ([#38387](https://github.com/angular/angular/issues/38387)) ([c9acb7b](https://github.com/angular/angular/commit/c9acb7b)), closes [#38311](https://github.com/angular/angular/issues/38311)
* **core:** prevent NgModule scope being overwritten in JIT compiler ([#37795](https://github.com/angular/angular/issues/37795)) ([3acebdc](https://github.com/angular/angular/commit/3acebdc)), closes [#37105](https://github.com/angular/angular/issues/37105)
* **core:** Store the currently selected ICU in `LView` ([#38345](https://github.com/angular/angular/issues/38345)) ([ee5123f](https://github.com/angular/angular/commit/ee5123f))
* **platform-server:** remove styles added by ServerStylesHost on destruction ([#38367](https://github.com/angular/angular/issues/38367)) ([7f11149](https://github.com/angular/angular/commit/7f11149))
* **router:** prevent calling unsubscribe on undefined subscription in RouterPreloader ([#38344](https://github.com/angular/angular/issues/38344)) ([4151314](https://github.com/angular/angular/commit/4151314))
* **service-worker:** fix the chrome debugger syntax highlighter ([#38332](https://github.com/angular/angular/issues/38332)) ([f5d5bac](https://github.com/angular/angular/commit/f5d5bac))
<aname="10.0.8"></a>
## 10.0.8 (2020-08-04)
@ -36,16 +232,6 @@
<aname="10.1.0-next.3"></a>
# 10.1.0-next.3 (2020-07-28)
### Bug Fixes
* **elements:** run strategy methods in correct zone ([#37814](https://github.com/angular/angular/issues/37814)) ([8df888d](https://github.com/angular/angular/commit/8df888d)), closes [#24181](https://github.com/angular/angular/issues/24181)
<aname="10.0.6"></a>
## 10.0.6 (2020-07-28)
@ -59,23 +245,6 @@
<aname="10.1.0-next.2"></a>
# 10.1.0-next.2 (2020-07-22)
### Bug Fixes
* **core:** Allow modification of lifecycle hooks any time before bootstrap ([#35464](https://github.com/angular/angular/issues/35464)) ([737506e](https://github.com/angular/angular/commit/737506e)), closes [#30497](https://github.com/angular/angular/issues/30497)
### Features
* **common:** add ReadonlyMap in place of Map in keyValuePipe ([#37311](https://github.com/angular/angular/issues/37311)) ([3373453](https://github.com/angular/angular/commit/3373453)), closes [#37308](https://github.com/angular/angular/issues/37308)
* **forms:** AbstractControl to store raw validators in addition to combined validators function ([#37881](https://github.com/angular/angular/issues/37881)) ([ad7046b](https://github.com/angular/angular/commit/ad7046b))
* **localize:** allow duplicate messages to be handled during extraction ([#38082](https://github.com/angular/angular/issues/38082)) ([cf9a47b](https://github.com/angular/angular/commit/cf9a47b)), closes [#38077](https://github.com/angular/angular/issues/38077)
<aname="10.0.5"></a>
## 10.0.5 (2020-07-22)
@ -110,62 +279,6 @@
* **bazel:** provide LinkablePackageInfo from ng_module ([#37778](https://github.com/angular/angular/issues/37778)) ([6cd10a1](https://github.com/angular/angular/commit/6cd10a1)), closes [/github.com/bazelbuild/rules_nodejs/blob/9a5de3728b05bf1647bbb87ad99f54e626604705/internal/linker/link_node_modules.bzl#L144-L146](https://github.com//github.com/bazelbuild/rules_nodejs/blob/9a5de3728b05bf1647bbb87ad99f54e626604705/internal/linker/link_node_modules.bzl/issues/L144-L146)
<aname="10.1.0-next.1"></a>
# 10.1.0-next.1 (2020-07-15)
### Bug Fixes
* **bazel:** ng_module rule does not expose flat module information in Ivy ([#36971](https://github.com/angular/angular/issues/36971)) ([1550663](https://github.com/angular/angular/commit/1550663))
* **compiler:** check more cases for pipe usage inside host bindings ([#37883](https://github.com/angular/angular/issues/37883)) ([9322b9a](https://github.com/angular/angular/commit/9322b9a)), closes [#34655](https://github.com/angular/angular/issues/34655) [#37610](https://github.com/angular/angular/issues/37610)
* **language-service:** remove completion for string ([#37983](https://github.com/angular/angular/issues/37983)) ([10aba15](https://github.com/angular/angular/commit/10aba15))
* **ngcc:** report a warning if ngcc tries to use a solution-style tsconfig ([#38003](https://github.com/angular/angular/issues/38003)) ([b358495](https://github.com/angular/angular/commit/b358495)), closes [#36386](https://github.com/angular/angular/issues/36386)
* **service-worker:** correctly serve `ngsw/state` with a non-root SW scope ([#37922](https://github.com/angular/angular/issues/37922)) ([2156bee](https://github.com/angular/angular/commit/2156bee)), closes [#30505](https://github.com/angular/angular/issues/30505)
<aname="10.1.0-next.0"></a>
# 10.1.0-next.0 (2020-07-08)
### Bug Fixes
* **common:** date pipe gives wrong week number ([#37632](https://github.com/angular/angular/issues/37632)) ([ef1fb6d](https://github.com/angular/angular/commit/ef1fb6d)), closes [#33961](https://github.com/angular/angular/issues/33961)
* **compiler-cli:** ensure source-maps can handle webpack:// protocol ([#32912](https://github.com/angular/angular/issues/32912)) ([decd95e](https://github.com/angular/angular/commit/decd95e))
* **compiler-cli:** only read source-map comment from last line ([#32912](https://github.com/angular/angular/issues/32912)) ([07a07e3](https://github.com/angular/angular/commit/07a07e3))
* **core:** do not trigger CSP alert/report in Firefox and Chrome ([#36578](https://github.com/angular/angular/issues/36578)) ([#36578](https://github.com/angular/angular/issues/36578)) ([b950d46](https://github.com/angular/angular/commit/b950d46)), closes [#25214](https://github.com/angular/angular/issues/25214)
* **forms:** handle form groups/arrays own pending async validation ([#22575](https://github.com/angular/angular/issues/22575)) ([77b62a5](https://github.com/angular/angular/commit/77b62a5)), closes [#10064](https://github.com/angular/angular/issues/10064)
* **language-service:** non-existent module format in package output ([#37623](https://github.com/angular/angular/issues/37623)) ([413a0fb](https://github.com/angular/angular/commit/413a0fb))
* **router:** fix navigation ignoring logic to compare to the browser url ([#37716](https://github.com/angular/angular/issues/37716)) ([a5ffca0](https://github.com/angular/angular/commit/a5ffca0)), closes [#16710](https://github.com/angular/angular/issues/16710) [#13586](https://github.com/angular/angular/issues/13586)
* **router:** remove parenthesis for primary outlet segment after removing auxiliary outlet segment ([#24656](https://github.com/angular/angular/issues/24656)) ([#37163](https://github.com/angular/angular/issues/37163)) ([71f008f](https://github.com/angular/angular/commit/71f008f))
### Features
* **bazel:** provide LinkablePackageInfo from ng_module ([#37623](https://github.com/angular/angular/issues/37623)) ([6898eab](https://github.com/angular/angular/commit/6898eab))
* **compiler-cli:** add `SourceFile.getOriginalLocation()` to sourcemaps package ([#32912](https://github.com/angular/angular/issues/32912)) ([6abb8d0](https://github.com/angular/angular/commit/6abb8d0))
* **compiler-cli:** explain why an expression cannot be used in AOT compilations ([#37587](https://github.com/angular/angular/issues/37587)) ([712f1bd](https://github.com/angular/angular/commit/712f1bd))
* **core:** support injection token as predicate in queries ([#37506](https://github.com/angular/angular/issues/37506)) ([97dc85b](https://github.com/angular/angular/commit/97dc85b)), closes [#21152](https://github.com/angular/angular/issues/21152) [#36144](https://github.com/angular/angular/issues/36144)
* **platform-server:** add option for absolute URL HTTP support ([#37539](https://github.com/angular/angular/issues/37539)) ([d37049a](https://github.com/angular/angular/commit/d37049a)), closes [#37071](https://github.com/angular/angular/issues/37071)
### Performance Improvements
* **compiler-cli:** fix regressions in incremental program reuse ([#37641](https://github.com/angular/angular/issues/37641)) ([5103d90](https://github.com/angular/angular/commit/5103d90))
* **ngcc:** shortcircuit tokenizing in ESM dependency host ([#37639](https://github.com/angular/angular/issues/37639)) ([bd7f440](https://github.com/angular/angular/commit/bd7f440))
* **ngcc:** use `EntryPointManifest` to speed up noop `ProgramBaseEntryPointFinder` ([#37665](https://github.com/angular/angular/issues/37665)) ([9318e23](https://github.com/angular/angular/commit/9318e23))
@ -447,12 +560,12 @@ https://github.com/microsoft/TypeScript/issues/38374 for more
information and updates.
If you used Closure Compiler with Angular in the past, you will likely
be better off consuming Angular packages built from sources directly
be better off consuming Angular packages built from sources directly
rather than consuming the version we publish on npm,
which is primarily optimized for Webpack/Rollup + Terser build pipeline.
As a temporary workaround, you might consider using your current build
pipeline with Closure flag `--compilation_level=SIMPLE`. This flag
pipeline with Closure flag `--compilation_level=SIMPLE`. This flag
will ensure that your build pipeline produces buildable and
runnable artifacts, at the cost of increased payload size due to
advanced optimizations being disabled.
@ -460,17 +573,17 @@ advanced optimizations being disabled.
If you were affected by this change, please help us understand your
needs by leaving a comment on https://github.com/angular/angular/issues/37234.
* **core:** make generic mandatory for ModuleWithProviders
* **core:** make generic mandatory for ModuleWithProviders
A generic type parameter has always been required for the `ModuleWithProviders` pattern to work with Ivy, but prior to this commit, View Engine allowed the generic type to be omitted (though support was officially deprecated).
If you're using `ModuleWithProviders` without a generic type in your application code, a v10 migration will update your code for you.
If you're using `ModuleWithProviders` without a generic type in your application code, a v10 migration will update your code for you.
However, if you are using View Engine and also depending on a library that omits the generic type, you will now get a build time error similar to:
```
error TS2314: Generic type 'ModuleWithProviders<T>' requires 1 type argument(s).
```
In this case, ngcc won't help you (because it's Ivy-only) and the migration only covers application code.
You should contact the library author to fix their library to provide a type parameter when they use this class.
@ -1798,7 +1911,7 @@ API surface going forward.
* **core:** Injector.get now accepts abstract classes to return
type-safe values. Previous implementation returned `any` through the
deprecated implementation.
* Angular now compiles with Ivy by default ([#32219](https://github.com/angular/angular/issues/32219)) ([ec4381d](https://github.com/angular/angular/commit/ec4381d)).
* Angular now compiles with Ivy by default ([#32219](https://github.com/angular/angular/issues/32219)) ([ec4381d](https://github.com/angular/angular/commit/ec4381d)).
If you aren't familiar with Ivy, read our [blog post about the Ivy preview](https://blog.angular.io/its-time-for-the-compatibility-opt-in-preview-of-ivy-38f3542a282f?gi=8bfeb44b05c) and see the list of changes [here](https://docs.google.com/document/d/1Dije0AsJ0PxL3NaeNPxpYDeapj30b_QC0xfeIvIIzgg/preview).
@ -17,7 +17,7 @@ An NgModule is defined by a class decorated with `@NgModule()`. The `@NgModule()
* `imports`: Other modules whose exported classes are needed by component templates declared in *this* NgModule.
* `providers`: Creators of [services](guide/architecture-services) that this NgModule contributes to the global collection of services; they become accessible in all parts of the app. (You can also specify providers at the component level, which is often preferred.)
* `providers`: Creators of [services](guide/architecture-services) that this NgModule contributes to the global collection of services; they become accessible in all parts of the app. (You can also specify providers at the component level.)
* `bootstrap`: The main application view, called the *root component*, which hosts all other app views. Only the *root NgModule* should set the `bootstrap` property.
@ -95,7 +95,7 @@ or in the `@NgModule()` or `@Component()` metadata
Registering the provider in the `@Injectable()` metadata also allows Angular to optimize an app
by removing the service from the compiled app if it isn't used.
* When you register a provider with a [specific NgModule](guide/architecture-modules), the same instance of a service is available to all components in that NgModule. To register at this level, use the `providers` property of the `@NgModule()` decorator,
* When you register a provider with a [specific NgModule](guide/architecture-modules), the same instance of a service is available to all components in that NgModule. To register at this level, use the `providers` property of the `@NgModule()` decorator.
@ -154,7 +154,7 @@ Attributes can be changed by `setAttribute()`, which re-initializes correspondin
</div>
For more information, see the [MDN Interfaces documentation](https://developer.mozilla.org/en-US/docs/Web/API#Interfaces) which has API docs for all the standard DOM elements and their properties.
Comparing the [`<td>` attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/td) attributes to the [`<td>` properties](https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableCellElement) provides a helpful example for differentiation.
Comparing the [`<td>` attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/td) to the [`<td>` properties](https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableCellElement) provides a helpful example for differentiation.
In particular, you can navigate from the attributes page to the properties via "DOM interface" link, and navigate the inheritance hierarchy up to `HTMLTableCellElement`.
@ -195,7 +195,7 @@ To control the state of the button, set the `disabled` *property*,
<divclass="alert is-helpful">
Though you could technically set the `[attr.disabled]` attribute binding, the values are different in that the property binding requires to a boolean value, while its corresponding attribute binding relies on whether the value is `null` or not. Consider the following:
Though you could technically set the `[attr.disabled]` attribute binding, the values are different in that the property binding requires to be a boolean value, while its corresponding attribute binding relies on whether the value is `null` or not. Consider the following:
@ -12,14 +12,12 @@ Every application has at least one Angular module, the _root_ module,
which must be present for bootstrapping the application on launch.
By convention and by default, this NgModule is named `AppModule`.
When you use the [Angular CLI](cli) command `ng new` to generate an app, the default `AppModule`is as follows.
When you use the [Angular CLI](cli) command `ng new` to generate an app, the default `AppModule`looks like the following:
```typescript
/* JavaScript imports */
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';
import { AppComponent } from './app.component';
@ -29,9 +27,7 @@ import { AppComponent } from './app.component';
AppComponent
],
imports: [
BrowserModule,
FormsModule,
HttpClientModule
BrowserModule
],
providers: [],
bootstrap: [AppComponent]
@ -90,8 +86,6 @@ A declarable can only belong to one module, so only declare it in
one `@NgModule`. When you need it elsewhere,
import the module that has the declarable you need in it.
**Only `@NgModule` references** go in the `imports` array.
### Using directives with `@NgModule`
@ -122,9 +116,6 @@ Now you could use your `ItemDirective` in a component. This example uses `AppMod
Remember, components, directives, and pipes belong to one module only. You only need to declare them once in your app because you share them by importing the necessary modules. This saves you time and helps keep your app lean.
{@a imports}
## The `imports` array
@ -132,14 +123,22 @@ Remember, components, directives, and pipes belong to one module only. You only
The module's `imports` array appears exclusively in the `@NgModule` metadata object.
It tells Angular about other NgModules that this particular module needs to function properly.
<code-example
path="bootstrapping/src/app/app.module.ts"
region="imports"
header="src/app/app.module.ts (excerpt)">
</code-example>
This list of modules are those that export components, directives, or pipes
that the component templates in this module reference. In this case, the component is
that component templates in this module reference. In this case, the component is
`AppComponent`, which references components, directives, or pipes in `BrowserModule`,
`FormsModule`, or `HttpClientModule`.
A component template can reference another component, directive,
or pipe when the referenced class is declared in this module or
@ -125,7 +125,7 @@ Emulated is the default and most commonly used view encapsulation. For more info
<divclass="alert is-important">
The shadow-piercing descendant combinator is deprecated and [support is being removed from major browsers](https://www.chromestatus.com/features/6750456638341120) and tools.
The shadow-piercing descendant combinator is deprecated and [support is being removed from major browsers](https://www.chromestatus.com/feature/6750456638341120) and tools.
As such we plan to drop support in Angular (for all 3 of `/deep/`, `>>>` and `::ng-deep`).
Until then `::ng-deep` should be preferred for a broader compatibility with the tools.
@ -26,7 +26,7 @@ The `ng generate` command creates the `projects/my-lib` folder in your workspace
</div>
When you generate a new library, the workspace configuration file, `angular.json`, is updated with a project of type 'library'.
When you generate a new library, the workspace configuration file, `angular.json`, is updated with a project of type `library`.
<code-exampleformat="json">
"projects": {
@ -109,7 +109,7 @@ If you want a dropdown that would contain different passed-in values each time,
Suppose you want to read a configuration file and then generate a form based on that configuration.
If that form will need additional customization by the developer who is using your library, it might work best as a schematic.
However, if the forms will always be the same and not need much customization by developers, then you could create a dynamic component that takes the configuration and generates the form.
However, if the form will always be the same and not need much customization by developers, then you could create a dynamic component that takes the configuration and generates the form.
In general, the more complex the customization, the more useful the schematic approach.
To learn more, see [Schematics Overview](guide/schematics) and [Schematicsfor Libraries](guide/schematics-for-libraries).
@ -511,9 +511,9 @@ Each script tag has a `type="module"` or `nomodule` attribute. Browsers with nat
To include differential loading in your application builds, you must configure the Browserslist and TypeScript configuration files in your application project.
The following examples show a `browserlistrc` and `tsconfig.json` file for a newly created Angular application. In this configuration, legacy browsers such as IE 9-11 are ignored, and the compilation target is ES2015.
The following examples show a `.browserslistrc` and `tsconfig.json` file for a newly created Angular application. In this configuration, legacy browsers such as IE 9-11 are ignored, and the compilation target is ES2015.
| `@angular/core` | Undecorated base classes that use Angular features | Add Angular decorator | See [migration guide](guide/migration-undecorated-classes) for more info |
| `@angular/core` | `ModuleWithProviders` without a generic | `ModuleWithProviders` with a generic | See [migration guide](guide/migration-module-with-providers) for more info |
*To see APIs removed in version 9, check out this guide on the [version 9 docs site](https://v9.angular.io/guide/deprecations#removed).
{@a style-sanitization}
### Style Sanitization for `[style]` and `[style.prop]` bindings
Angular used to sanitize `[style]` and `[style.prop]` bindings to prevent malicious code from being inserted through `javascript:` expressions in CSS `url()` entries. However, most modern browsers no longer support the usage of these expressions, so sanitization was only maintained for the sake of IE 6 and 7. Given that Angular does not support either IE 6 or 7 and sanitization has a performance cost, we will no longer sanitize style bindings as of version 10 of Angular.
@ -119,7 +119,14 @@ The recently-developed [custom elements](https://developer.mozilla.org/en-US/doc
In browsers that support Custom Elements natively, the specification requires developers use ES2015 classes to define Custom Elements - developers can opt-in to this by setting the `target: "es2015"` property in their project's [TypeScript configuration file](/guide/typescript-configuration). As Custom Element and ES2015 support may not be available in all browsers, developers can instead choose to use a polyfill to support older browsers and ES5 code.
Use the [Angular CLI](cli) to automatically set up your project with the correct polyfill: `ng add @angular/elements --project=*your_project_name*`.
Use the [Angular CLI](cli) to automatically set up your project with the correct polyfill:
<code-examplelanguage="sh">
ng add @angular/elements --project=*your_project_name*
</code-example>
- For more information about polyfills, see [polyfill documentation](https://www.webcomponents.org/polyfills).
- For more information about Angular browser support, see [Browser Support](guide/browser-support).
@ -76,6 +76,12 @@ All router components must be entry components. Because this would require you t
## The `entryComponents` array
<divclass="alert is-helpful">
Since 9.0.0 with Ivy, the `entryComponents` property is no longer necessary. See [deprecations guide](guide/deprecations#entryComponents).
</div>
Though the `@NgModule` decorator has an `entryComponents` array, most of the time
you won't have to explicitly set any entry components because Angular adds components listed in `@NgModule.bootstrap` and those in route definitions to entry components automatically. Though these two mechanisms account for most entry components, if your app happens to bootstrap or dynamically load a component by type imperatively,
Now the `AppModule` knows about the feature module. If you were to add any service providers to the feature module, `AppModule` would know about those too, as would any other feature modules. However, NgModules don’t expose their components.
Now the `AppModule` knows about the feature module. If you were to add any service providers to the feature module, `AppModule` would know about those too, as would any other feature modules. However, NgModules don’t expose their components by default.
## Rendering a feature module’s component template
@ -40,8 +40,7 @@ The top level of the workspace contains workspace-wide configuration files, conf
| `package-lock.json` | Provides version information for all packages installed into `node_modules` by the npm client. See [npm documentation](https://docs.npmjs.com/files/package-lock.json) for details. If you use the yarn client, this file will be [yarn.lock](https://yarnpkg.com/lang/en/docs/yarn-lock/) instead. |
| `src/` | Source files for the root-level application project. |
| `node_modules/` | Provides [npm packages](guide/npm-packages) to the entire workspace. Workspace-wide `node_modules` dependencies are visible to all projects. |
| `tsconfig.json` | The `tsconfig.json` file is a ["Solution Style"](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-9.html#support-for-solution-style-tsconfigjson-files) TypeScript configuration file. Code editors and TypeScript’s language server use this file to improve development experience. Compilers do not use this file. |
| `tsconfig.base.json` | The base [TypeScript](https://www.typescriptlang.org/) configuration for projects in the workspace. All other configuration files inherit from this base file. For more information, see the [Configuration inheritance with extends](https://www.typescriptlang.org/docs/handbook/tsconfig-json.html#configuration-inheritance-with-extends) section of the TypeScript documentation.|
| `tsconfig.json` | The base [TypeScript](https://www.typescriptlang.org/) configuration for projects in the workspace. All other configuration files inherit from this base file. For more information, see the [Configuration inheritance with extends](https://www.typescriptlang.org/docs/handbook/tsconfig-json.html#configuration-inheritance-with-extends) section of the TypeScript documentation.|
| `tslint.json` | Default [TSLint](https://palantir.github.io/tslint/) configuration for projects in the workspace. |
@ -103,7 +102,7 @@ Angular components, templates, and styles go here.
The application-specific configuration files for the root application reside at the workspace root level.
For a multi-project workspace, project-specific configuration files are in the project root, under `projects/project-name/`.
Project-specific [TypeScript](https://www.typescriptlang.org/) configuration files inherit from the workspace-wide `tsconfig.base.json`, and project-specific [TSLint](https://palantir.github.io/tslint/) configuration files inherit from the workspace-wide `tslint.json`.
Project-specific [TypeScript](https://www.typescriptlang.org/) configuration files inherit from the workspace-wide `tsconfig.json`, and project-specific [TSLint](https://palantir.github.io/tslint/) configuration files inherit from the workspace-wide `tslint.json`.
@ -627,6 +627,11 @@ The [npm package manager](https://docs.npmjs.com/getting-started/what-is-npm) is
Learn more about how Angular uses [Npm Packages](guide/npm-packages).
{@ ngc}
## ngc
`ngc` is a Typescript-to-Javascript transpiler that processes Angular decorators, metadata, and templates, and emits JavaScript code.
The most recent implementation is internally refered to as `ngtsc` because it's a minimalistic wrapper around the TypeScript compiler `tsc` that adds a transform for processing Angular code.
@ -11,11 +11,11 @@ That said, some applications will likely need to apply some manual updates.
In version 10, [a few deprecated APIs have been removed](guide/updating-to-version-10#removals) and there are a [few breaking changes](guide/updating-to-version-10#breaking-changes) unrelated to Ivy.
If you're seeing errors after updating to version 9, you'll first want to rule those changes out.
To do so, temporarily [turn off Ivy](guide/ivy#opting-out-of-angular-ivy) in your `tsconfig.base.json` and re-start your app.
To do so, temporarily [turn off Ivy](guide/ivy#opting-out-of-angular-ivy) in your `tsconfig.json` and re-start your app.
If you're still seeing the errors, they are not specific to Ivy. In this case, you may want to consult the [general version 10 guide](guide/updating-to-version-10). If you've opted into any of the new, stricter type-checking settings, you may also want to check out the [template type-checking guide](guide/template-typecheck).
If the errors are gone, switch back to Ivy by removing the changes to the `tsconfig.base.json` and review the list of expected changes below.
If the errors are gone, switch back to Ivy by removing the changes to the `tsconfig.json` and review the list of expected changes below.
@ -87,7 +87,7 @@ To make one, enter the following command in the terminal, where `customers` is t
ng generate module customers --route customers --module app.module
</code-example>
This creates a `customers` folder with the new lazy-loadable module `CustomersModule` defined in the `customers.module.ts` file. The command automatically declares the `CustomersComponent` inside the new feature module.
This creates a `customers` folder having the new lazy-loadable feature module `CustomersModule` defined in the `customers.module.ts` file and the routing module `CustomersRoutingModule` defined in the `customers-routing.module.ts` file. The command automatically declares the `CustomersComponent` and imports `CustomersRoutingModule` inside the new feature module.
Because the new module is meant to be lazy-loaded, the command does NOT add a reference to the new feature module in the application's root module file, `app.module.ts`.
Instead, it adds the declared route, `customers` to the `routes` array declared in the module provided as the `--module` option.
@ -141,7 +141,7 @@ Because the token is now an abstract class, and the injectable component impleme
The implementation of the method (with all of its code overhead) resides in the injectable component that can be tree-shaken.
This allows the parent to communicate with the child (if it is present) in a type-safe manner.
For example, the `LibCardComponent` now queries`LibHeaderToken` rather than `LibHeaderComponent`.
For example, the `LibCardComponent` now queries`LibHeaderToken` rather than `LibHeaderComponent`.
The following example shows how the pattern allows `LibCardComponent` to communicate with the `LibHeaderComponent` without actually referring to `LibHeaderComponent`.
This migration adds support to existing projects for TypeScript's new ["solution-style" tsconfig feature](https://devblogs.microsoft.com/typescript/announcing-typescript-3-9/#solution-style-tsconfig).
Support is added by making two changes:
1. Renaming the workspace-level `tsconfig.json` to `tsconfig.base.json`.
All project [TypeScript configuration files](guide/typescript-configuration) will extend from this base which contains the common options used throughout the workspace.
2. Adding the solution `tsconfig.json` file at the root of the workspace.
This `tsconfig.json` file will only contain references to project-level TypeScript configuration files and is only used by editors/IDEs.
As an example, the solution `tsconfig.json` for a new project is as follows:
```json
// This is a "Solution Style" tsconfig.json file, and is used by editors and TypeScript’s language server to improve development experience.
// It is not intended to be used to perform a compilation.
{
"files": [],
"references": [
{
"path": "./tsconfig.app.json"
},
{
"path": "./tsconfig.spec.json"
},
{
"path": "./e2e/tsconfig.json"
}
]
}
```
## Why is this migration necessary?
Solution-style `tsconfig.json` files provide an improved editing experience and fix several long-standing defects when editing files in an IDE.
IDEs that leverage the TypeScript language service (for example, [Visual Studio Code](https://code.visualstudio.com)), will only use TypeScript configuration files that are named `tsconfig.json`.
In complex projects, there may be more than one compilation unit and each of these units may have different settings and options.
With the Angular CLI, a project will have application code that will target a browser.
It will also have unit tests that should not be included within the built application and that also need additional type information present (`jasmine` in this case).
Both parts of the project also share some but not all of the code within the project.
As a result, two separate TypeScript configuration files (`tsconfig.app.json` and `tsconfig.spec.json`) are needed to ensure that each part of the application is configured properly and that the right types are used for each part.
Also if web workers are used within a project, an additional tsconfig (`tsconfig.worker.json`) is needed.
Web workers use similar but incompatible types to the main browser application.
This requires the additional configuration file to ensure that the web worker files use the appropriate types and will build successfully.
While the Angular build system knows about all of these TypeScript configuration files, an IDE using TypeScript's language service does not.
Because of this, an IDE will not be able to properly analyze the code from each part of the project and may generate false errors or make suggestions that are incorrect for certain files.
By leveraging the new solution-style tsconfig, the IDE can now be aware of the configuration of each part of a project.
This allows each file to be treated appropriately based on its tsconfig.
IDE features such as error/warning reporting and auto-suggestion will operate more effectively as well.
The TypeScript 3.9 release [blog post](https://devblogs.microsoft.com/typescript/announcing-typescript-3-9/#solution-style-tsconfig) also contains some additional information regarding this new feature.
@ -101,7 +101,7 @@ should import `BrowserModule` from `@angular/platform-browser`.
`BrowserModule` provides services that are essential to launch and run a browser app.
`BrowserModule` also re-exports `CommonModule` from `@angular/common`,
which means that components in the `AppModule`module also have access to
which means that components in the `AppModule` also have access to
the Angular directives every app needs, such as `NgIf` and `NgFor`.
Do not import `BrowserModule` in any other module.
@ -140,7 +140,7 @@ declared in this NgModule.
You _can_ export any declarable class—components, directives, and pipes—whether
it's declared in this NgModule or in an imported NgModule.
You _can_ re-export entire imported NgModules, which effectively re-exports all of their exported classes.
You _can_ re-export entire imported NgModules, which effectively re-export all of their exported classes.
An NgModule can even export a module that it doesn't import.
<hr/>
@ -192,7 +192,7 @@ Its only purpose is to add http service providers to the application as a whole.
The `forRoot()` static method is a convention that makes it easy for developers to configure services and providers that are intended to be singletons. A good example of `forRoot()` is the `RouterModule.forRoot()` method.
Apps pass a `Routes`object to `RouterModule.forRoot()` in order to configure the app-wide `Router` service with routes.
Apps pass a `Routes`array to `RouterModule.forRoot()` in order to configure the app-wide `Router` service with routes.
`RouterModule.forRoot()` returns a [ModuleWithProviders](api/core/ModuleWithProviders).
You add that result to the `imports` list of the root `AppModule`.
In a single-page app, you change what the user sees by showing or hiding portions of the display that correspond to particular components, rather than going out to the server to get a new page.
As users perform application tasks, they need to move between the different [views](guide/glossary#view "Definition of view") that you have defined.
To implement this kind of navigation within the single page of your app, you use the Angular **`Router`**.
To handle the navigation from one [view](guide/glossary#view) to the next, you use the Angular _router_.
The router enables navigation by interpreting a browser URL as an instruction to change the view.
To handle the navigation from one [view](guide/glossary#view) to the next, you use the Angular **`Router`**.
The **`Router`** enables navigation by interpreting a browser URL as an instruction to change the view.
To explore a sample app featuring the router's primary features, see the <live-example></live-example>.
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