Previously if there were two path-mapped libraries that are in
different directories but the path of one started with same string
as the path of the other, we would incorrectly return the shorter
path - e.g. `dist/my-lib` and `dist/my-lib-second`. This was because
the list of `basePaths` was searched in ascending alphabetic order and
we were using `startsWith()` to match the path.
Now the `basePaths` are searched in reverse alphabetic order so the
longer path will be matched correctly.
// FW-1873
Fixes#35536
PR Close#35592
* it's tricky to get out of the runfiles tree with `bazel test` as `BUILD_WORKSPACE_DIRECTORY` is not set but I employed a trick to read the `DO_NOT_BUILD_HERE` file that is one level up from `execroot` and that contains the workspace directory. This is experimental and if `bazel test //:test.debug` fails than `bazel run` is still guaranteed to work as `BUILD_WORKSPACE_DIRECTORY` will be set in that context
* test //integration:bazel_test and //integration:bazel-schematics_test exclusively
* run "exclusive" and "manual" bazel-in-bazel integration tests in their own CI job as they take 8m+ to execute
```
//integration:bazel-schematics_test PASSED in 317.2s
//integration:bazel_test PASSED in 167.8s
```
* Skip all integration tests that are now handled by angular_integration_test except the tests that are tracked for payload size; these are:
- cli-hello-world*
- hello_world__closure
* add & pin @babel deps as newer versions of babel break //packages/localize/src/tools/test:test
@babel/core dep had to be pinned to 7.6.4 or else //packages/localize/src/tools/test:test failed. Also //packages/localize uses @babel/generator, @babel/template, @babel/traverse & @babel/types so these deps were added to package.json as they were not being hoisted anymore from @babel/core transitive.
NB: integration/hello_world__systemjs_umd test must run with systemjs 0.20.0
NB: systemjs must be at 0.18.10 for legacy saucelabs job to pass
NB: With Bazel 2.0, the glob for the files to test `"integration/bazel/**"` is empty if integation/bazel is in .bazelignore. This glob worked under these conditions with 1.1.0. I did not bother testing with 1.2.x as not having integration/bazel in .bazelignore is correct.
PR Close#33927
When a pipe inherits its constructor, and as a result its factory, from an injectable in AOT mode, it can end up throwing an error, because the inject implementation hasn't been set yet. These changes ensure that the implementation is set before the pipe's factory is invoked.
Note that this isn't a problem in JIT mode, because the factory inheritance works slightly differently, hence why this test isn't going through `TestBed`.
Fixes#35277.
PR Close#35468
Under View Engine's default (non-fullTemplateTypeCheck) checking, object and
array literals which appear in templates are treated as having type `any`.
This allows a number of patterns which would not otherwise compile, such as
indexing an object literal by a string:
```html
{{ {'a': 1, 'b': 2}[value] }}
```
(where `value` is `string`)
Ivy, meanwhile, has always inferred strong types for object literals, even
in its compatibility mode. This commit fixes the bug, and adds the
`strictLiteralTypes` flag to specifically control this inference. When the
flag is `false` (in compatibility mode), object and array literals receive
the `any` type.
PR Close#35462
In its default compatibility mode, the Ivy template type-checker attempts to
emulate the View Engine default mode as accurately as is possible. This
commit addresses a gap in this compatibility that stems from a View Engine
type-checking bug.
Consider two template expressions:
```html
{{ obj?.field }}
{{ fn()?.field }}
```
and suppose that the type of `obj` and `fn()` are the same - both return
either `null` or an object with a `field` property.
Under View Engine, these type-check differently. The `obj` case will catch
if the object type (when not null) does not have a `field` property, while
the `fn()` case will not. This is due to how View Engine represents safe
navigations:
```typescript
// for the 'obj' case
(obj == null ? null as any : obj.field)
// for the 'fn()' case
let tmp: any;
((tmp = fn()) == null ? null as any : tmp.field)
```
Because View Engine uses the same code generation backend as it does to
produce the runtime code for this expression, it uses a ternary for safe
navigation, with a temporary variable to avoid invoking 'fn()' twice. The
type of this temporary variable is 'any', however, which causes the
`tmp.field` check to be meaningless.
Previously, the Ivy template type-checker in compatibility mode assumed that
`fn()?.field` would always check for the presence of 'field' on the non-null
result of `fn()`. This commit emulates the View Engine bug in Ivy's
compatibility mode, so an 'any' type will be inferred under the same
conditions.
As part of this fix, a new format for safe navigation operations in template
type-checking code is introduced. This is based on the realization that
ternary based narrowing is unnecessary.
For the `fn()` case in strict mode, Ivy now generates:
```typescript
(null as any ? fn()!.field : undefined)
```
This effectively uses the ternary operator as a type "or" operation. The
resulting type will be a union of the type of `fn()!.field` with
`undefined`.
For the `fn()` case in compatibility mode, Ivy now emulates the bug with:
```typescript
(fn() as any).field
```
The cast expression includes the call to `fn()` and allows it to be checked
while still returning a type of `any` from the expression.
For the `obj` case in compatibility mode, Ivy now generates:
```typescript
(obj!.field as any)
```
This cast expression still returns `any` for its type, but will check for
the existence of `field` on the type of `obj!`.
PR Close#35462
I think the bug is introduced in my PR#34847. For example, 'model="{{title}}"', the attribute value cannot be parsed by 'parseTemplateBindings'.
PR Close#35494
In ES5 code, TypeScript requires certain helpers (such as
`__spreadArrays()`) to be able to support ES2015+ features. These
helpers can be either imported from `tslib` (by setting the
`importHelpers` TS compiler option to `true`) or emitted inline (by
setting the `importHelpers` and `noEmitHelpers` TS compiler options to
`false`, which is the default value for both).
Ngtsc's `StaticInterpreter` (which is also used during ngcc processing)
is able to statically evaluate some of these helpers (currently
`__assign()`, `__spread()` and `__spreadArrays()`), as long as
`ReflectionHost#getDefinitionOfFunction()` correctly detects the
declaration of the helper. For this to happen, the left-hand side of the
corresponding call expression (i.e. `__spread(...)` or
`tslib.__spread(...)`) must be evaluated as a function declaration for
`getDefinitionOfFunction()` to be called with.
In the case of imported helpers, the `tslib.__someHelper` expression was
resolved to a function declaration of the form
`export declare function __someHelper(...args: any[][]): any[];`, which
allows `getDefinitionOfFunction()` to correctly map it to a TS helper.
In contrast, in the case of emitted helpers (and regardless of the
module format: `CommonJS`, `ESNext`, `UMD`, etc.)), the `__someHelper`
identifier was resolved to a variable declaration of the form
`var __someHelper = (this && this.__someHelper) || function () { ... }`,
which upon further evaluation was categorized as a `DynamicValue`
(prohibiting further evaluation by the `getDefinitionOfFunction()`).
As a result of the above, emitted TypeScript helpers were not evaluated
in ES5 code.
---
This commit changes the detection of TS helpers to leverage the existing
`KnownFn` feature (previously only used for built-in functions).
`Esm5ReflectionHost` is changed to always return `KnownDeclaration`s for
TS helpers, both imported (`getExportsOfModule()`) as well as emitted
(`getDeclarationOfIdentifier()`).
Similar changes are made to `CommonJsReflectionHost` and
`UmdReflectionHost`.
The `KnownDeclaration`s are then mapped to `KnownFn`s in
`StaticInterpreter`, allowing it to statically evaluate call expressions
involving any kind of TS helpers.
Jira issue: https://angular-team.atlassian.net/browse/FW-1689
PR Close#35191
This is in preparation of using the `KnownFn` type for known TypeScript
helpers (in addition to built-in functions/methods). This will in turn
allow simplifying the detection of both imported and emitted TypeScript
helpers.
PR Close#35191
When statically evaluating CommonJS code it is possible to find that we
are looking for the declaration of an identifier that actually came from
a typings file (rather than a CommonJS file).
Previously, the CommonJS reflection host would always try to use a
CommonJS specific algorithm for finding identifier declarations, but
when the id is actually in a typings file this resulted in the returned
declaration being the containing file of the declaration rather than the
declaration itself.
Now the CommonJS reflection host will check to see if the file
containing the identifier is a typings file and use the appropriate
stategy.
(Note: This is the equivalent of #34356 but for CommonJS.)
PR Close#35191
In #33705 we made it so that we generate pure functions for object/array literals in order to avoid having them be shared across elements/views. The problem this introduced is that further down the line the `ContantPool` uses the generated literal in order to figure out whether to share an existing factory or to create a new one. `ConstantPool` determines whether to share a factory by creating a key from the AST node and using it to look it up in the factory cache, however the key generation function didn't handle function invocations and replaced them with `null`. This means that the key for `{foo: pureFunction0(...)}` and `{foo: null}` are the same.
These changes rework the logic so that instead of generating a `null` key
for function invocations, we generate a variable called `<unknown>` which
shouldn't be able to collide with anything.
Fixes#35298.
PR Close#35481
Currently Ivy always generates the `$event` function argument, even if it isn't being used by the listener expressions. This can lead to unnecessary bytes being generated, because optimizers won't remove unused arguments by default. These changes add some logic to avoid adding the argument when it isn't required.
PR Close#35097
The completions list don't include the 'ngTemplateOutlet'. The directive is a structural directive when it has injected the 'TemplateRef' or 'ViewContainerRef'.
PR Close#35466
In ES5 and ES2015, class identifiers may have aliases. Previously, the
`NgccReflectionHost`s recognized the following formats:
- ES5:
```js
var MyClass = (function () {
function InnerClass() {}
InnerClass_1 = InnerClass;
...
}());
```
- ES2015:
```js
let MyClass = MyClass_1 = class MyClass { ... };
```
In addition to the above, this commit adds support for recognizing an
alias outside the IIFE in ES5 classes (which was previously not
supported):
```js
var MyClass = MyClass_1 = (function () { ... }());
```
Jira issue: [FW-1869](https://angular-team.atlassian.net/browse/FW-1869)
Partially addresses #35399.
PR Close#35527
`Esm5ReflectionHost#getInnerFunctionDeclarationFromClassDeclaration()`
was already called with `ts.Declaration`, not `ts.Node`, so we can
tighten its parameter type and get rid of a redundant check.
`getIifeBody()` (called inside
`getInnerFunctionDeclarationFromClassDeclaration()`) will check whether
the given `ts.Declaration` is a `ts.VariableDeclaration`.
PR Close#35527
Prior to this commit, decorator handling logic in Ngtsc used `Error` to throw errors. This commit replaces most of these instances with `FatalDiagnosticError` class, which provider a better diagnostics error (including location of the problematic code).
PR Close#35244
Some minification tooling modifies `$localize` calls
to contain a comma sequence of items, where the
cooked and raw values are assigned to variables.
This change improves our ability to recognize these
structures.
Fixes#35376
PR Close#35562
We have to do some extra work in the animations module when we identify a Node environment which we determine based on the `process` global. The problem is that by default Webpack will polyfill the `process`, causing us to incorrectly identify it. These changes make it so that the check isn't thrown off by Webpack.
Fixes#35117.
PR Close#35134
We recently updated chokidar to `3.0.0`. The latest version of
chokidar provides TypeScript types on its own and makes the extra
dependency on the `@types` unnecessary.
This seems to have caused the `build-packages-dist` script to fail with
an error like:
```
[strictDeps] transitive dependency on external/npm/node_modules/chokidar/types/index.d.ts
not allowed. Please add the BUILD target to your rule's deps.
```
It's unclear why that happens, but a reasonable theory would be that
the TS compilation accidentally picked up the types from `chokidar`
instead of `@types/chokidar`, and the strict deps `@bazel/typescript`
check reported this as issue because it's not an explicit target dependency.
PR Close#35371
ngcc uses a lockfile to prevent two ngcc instances from executing at the
same time. Previously, if a lockfile was found the current process would
error and exit.
Now, when in async mode, the current process is able to wait for the previous
process to release the lockfile before continuing itself.
PR Close#35131
In View Engine, host element of dynamically created component received attributes and classes extracted from component's selector. For example, if component selector is `[attr] .class`, the `attr` attribute and `.class` class will be add to host element. This commit adds similar logic to Ivy, to make sure this behavior is aligned with View Engine.
PR Close#34481
Before this change content queries with the `descendants: false` option, as implemented in ivy,
would not descendinto `<ng-container>` elements. This behaviour was different from the way the
View Engine worked. This change alligns ngIvy and VE behaviours when it comes to queries and the
`<ng-container>` elements and fixes a common bugs where a query target was placed inside the
`<ng-container>` element with a * directive on it.
Before:
```html
<needs-target>
<ng-container *ngIf="condition">
<div #target>...</div> <!-- this node would NOT match -->
</ng-container>
</needs-target>
```
After:
```html
<needs-target>
<ng-container *ngIf="condition">
<div #target>...</div> <!-- this node WILL match -->
</ng-container>
</needs-target>
```
Fixes#34768
PR Close#35384
When the same provider is resolved multiple times on the same node, the first invocation had the correct context, but all subsequent ones were incorrect because we were registering the hook multiple times under different indexes in `destroyHooks`.
Fixes#35167.
PR Close#35249
Currently the logic that handles ICUs located outside of i18n blocks may throw exceptions at runtime. The problem is caused by the fact that we store incorrect TNode index for previous TNode (index that includes HEADER_OFFSET) and do not store a flag whether this TNode is a parent or a sibling node. As a result, the logic that assembles the final output uses incorrect TNodes and in some cases throws exceptions (when incompatible structure is extracted from tView.data due to the incorrect index). This commit adjusts the index and captures whether TNode is a parent to make sure underlying logic manipulates correct TNode.
PR Close#35347
In https://github.com/angular/angular/pull/33058, we removed support
for the `ngForm` selector in the NgForm directive. We deleted most
of the deprecation notices in that PR, but we missed a paragraph
of documentation in the API docs for NgForm.
This commit removes the outdated paragraph that makes it seem like
the selector is still around and deprecated (as opposed to removed),
as it might confuse users.
PR Close#35435
Given:
```
<div class="s1" [class]="null" [ngClass]="exp">
```
Notice that `[class]` binding is not a `string`. As a result the existing logic would not concatenate `[class]` with `class="s1"`. The resulting falsy value would than be sent to `ngClass` which would promptly clear all styles on the `<div>`
The new logic correctly handles falsy values for `[class]` bindings.
Fix#35335
PR Close#35350
Root cause is that for perf reasons we cache `LFrame` so that we don't have to allocate it all the time. To be extra fast we clear the `LFrame` on `enterView()` rather that on `leaveView()`. The implication of this strategy is that the deepest `LFrame` will retain objects until the `LFrame` allocation depth matches the deepest object.
The fix is to simply clear the `LFrame` on `leaveView()` rather then on `enterView()`
Fix#35148
PR Close#35156
Includes new feature to honor .bazelignore in external repositories. rules_nodejs 1.3.0 now generates a .bazelignore for the @npm repository so that Bazel ignores the @npm//:node_modules folder.
PR Close#35430
Brings in feat: builtin: expose @npm//foo__all_files filegroup that includes all files in the npm package (https://github.com/bazelbuild/rules_nodejs/commit/8d77827) that is needed for npm_integration_test @npm//puppeteer pkg_tar on OSX (as the OSX Chrrome libs are extracted to paths that contain spaces)
PR Close#35430
In the `loadRenderer` we make an assumption that the value will always be an `LView`, but if there's a directive on the same node which injects `ViewContainerRef` the `LView` will be wrapped in an `LContainer`. These changes add a call to unwrap the value before we try to read the value off of it.
Fixes#35342.
PR Close#35343
There is currently a bug in Chrome 80 that makes Array.reduce
not work according to spec. The functionality in forms that
retrieves controls from FormGroups and FormArrays (`form.get`)
relied on Array.reduce, so the Chrome bug broke forms for
many users.
This commit refactors our forms code to rely on Array.forEach
instead of Array.reduce to fix forms while we are waiting
for the Chrome fix to go live.
See https://bugs.chromium.org/p/chromium/issues/detail?id=1049982.
PR Close#35349
Under strict mode, the language service fails to typecheck nullable
symbols that have already been verified to be non-null.
This generates incorrect (false positive) and confusing diagnostics
for users.
To work around this issue in the short term, this commit changes the
diagnostic message from an error to a suggestion, and prompts users to
use the safe navigation operator (?) or non-null assertion operator (!).
For example, instead of
```typescript
{{ optional && optional.toString() }}
```
the following is cleaner:
```typescript
{{ optional?.toString() }}
{{ optional!.toString() }}
```
Note that with this change, users who legitimately make a typo in their
code will no longer see an error. I think this is acceptable, since
false positive is worse than false negative. However, if users follow
the suggestion, add ? or ! to their code, then the error will be surfaced.
This seems a reasonable trade-off.
References:
1. Safe navigation operator (?)
https://angular.io/guide/template-syntax#the-safe-navigation-operator----and-null-property-paths
2. Non-null assertion operator (!)
https://angular.io/guide/template-syntax#the-non-null-assertion-operator---
PR closes https://github.com/angular/angular/pull/35070
PR closes https://github.com/angular/vscode-ng-language-service/issues/589
PR Close#35200
Currently, would-be binding attributes that are missing binding names
are not parsed as bindings, and fall through as regular attributes. In
some cases, this can lead to a runtime error; trying to assign `#` as a
DOM attribute in an element like in `<div #></div>` fails because `#` is
not a valid attribute name.
Attributes composed of binding prefixes but not defining a binding
should be considered invalid, as this almost certainly indicates an
unintentional elision of a binding by the developer. This commit
introduces error reporting for attributes with a binding name prefix but
no actual binding name.
Closes https://github.com/angular/vscode-ng-language-service/issues/293.
PR Close#34595
Support for re-exports in UMD were added in e9fb5fdb8. This commit adds
some tests for re-exports (similar to the ones used for
`CommonJsReflectionHost`).
PR Close#35312
we should be documenting when an API is eligible for removal and not when it will be removed.
The actual removal depends on many factors, e.g. if we were able to automate the refactoring to
the recommended API in time or not.
PR Close#35263
Prior to this change, element namespace was not set for host elements of dynamically created components that resulted in incorrect rendering in a browser. This commit adds the logic to pick and set correct namespace for host element when component is created dynamically.
PR Close#35136
In Ivy's template type checker, event bindings are checked in a closure
to allow for accurate type inference of the `$event` parameter. Because
of the closure, any narrowing effects of template guards will no longer
be in effect when checking the event binding, as TypeScript assumes that
the guard outside of the closure may no longer be true once the closure
is invoked. For more information on TypeScript's Control Flow Analysis,
please refer to https://github.com/microsoft/TypeScript/issues/9998.
In Angular templates, it is known that an event binding can only be
executed when the view it occurs in is currently rendered, hence the
corresponding template guard is known to hold during the invocation of
an event handler closure. As such, it is desirable that any narrowing
effects from template guards are still in effect within the event
handler closure.
This commit tweaks the generated Type-Check Block (TCB) to repeat all
template guards within an event handler closure. This achieves the
narrowing effect of the guards even within the closure.
Fixes#35073
PR Close#35193
The `TargetedEntryPointFinder` must work out what the
containing package is for each entry-point that it finds.
The logic for doing this was flawed in the case that the
package was in a path-mapped directory and not in a
node_modules folder. This meant that secondary entry-points
were incorrectly setting their own path as the package
path, rather than the primary entry-point path.
Fixes#35188
PR Close#35227
This commit implements an experimental integration with tsc_wrapped, where
it can load the Angular compiler as a plugin and perform Angular
transpilation at a user's request.
This is an alternative to the current ngc_wrapped mechanism, which is a fork
of tsc_wrapped from several years ago. tsc_wrapped has improved
significantly since then, and this feature will allow Angular to benefit
from those improvements.
Currently the plugin API between tsc_wrapped and the Angular compiler is a
work in progress, so NgTscPlugin does not yet implement any interfaces from
@bazel/typescript (the home of tsc_wrapped). Instead, an interface is
defined locally to guide this standardization.
PR Close#34792
This commit moves the calculation of `ignoreFiles` - the set of files to be
ignored by a consumer of the `NgCompiler` API - from its `prepareEmit`
operation to its initialization. It's now available as a field on
`NgCompiler`.
This will allow a consumer to skip gathering diagnostics for `ignoreFiles`
as well as skip emit.
PR Close#34792
A bug previously caused the template type-checking diagnostics produced by
TypeScript for template expressions to use -99-prefixed error codes. These
codes are converted to "NG" errors instead of "TS" errors during diagnostic
printing. This commit fixes the issue.
PR Close#35146
- Adds `TView` into `LFrame`, read the `TView` from `LView` on `enterView`.
- Before this change the `TView` was ofter looked up from `LView` as `lView[TVIEW]`. This is suboptimal since reading from an Array, requires that the read checks array size before the read. This means that such a read has a much higher cost than reading from the property directly. By passing in the `TView` explicitly it makes the code more explicit and faster.
- Some rearrangements of arguments so that `TView` would come before `LView` for consistency.
PR Close#35069
In #34021 the ngtsc compiler gained the ability to emit type parameter
constraints, which would generate imports for any type reference that
is used within the constraint. However, the `AbsoluteModuleStrategy`
reference emitter strategy did not consider interface declarations as a
valid declaration it can generate an import for, throwing an error
instead.
This commit fixes the issue by including interface declarations in the
logic that determines whether something is a declaration.
Fixes#34837
PR Close#34849
In #33551, a bug in `ngc --watch` mode was fixed so that a component is
recompiled when its template file is changed. Due to insufficient
normalization of files paths, this fix did not have the desired effect
on Windows.
Fixes#32869
PR Close#34015
Inside `*ngFor` the second run of the styling instructions can get into situation where it tries to read a value from a binding which has not yet executed. As a result the read is `NO_CHANGE` value and subsequent property read cause an exception as it is of wrong type.
Fix#35118
PR Close#35133
This commit cleans up `expression_type.ts` by
1. Removing the unnecessary `TypeDiagnostic` class. It's replaced by
`ng.Diagnostic`.
2. Consolidating `reportError()` and `reportWarning()` to
`reportDiagnostic()`.
This is prep work so that we could make some of the type diagnostics a
suggestion in later PRs.
PR Close#35085
`TNode.directives` was introduced in https://github.com/angular/angular/pull/34938. Turns out that it is unnecessary because the information is already present it `TData` when combining with `TNode.directiveStart` and `TNode.directiveEnd`
Mainly this is true (conceptually):
```
expect(tNode.directives).toEqual(
tData.slice(
tNode.directivesStart,
tNode.directivesEnd - tNode.DirectivesStart -1
)
);
```
The refactoring removes `TNode.directives` and adds `TNode.directiveStyling` as we still need to keep location in the directive in `TNode`
PR Close#35050
These tests are used for perf testing and don't run as part of CI, as a result they bit-rotted. This fixes that. Long term these tests should be run as part of CI.
PR Close#35071
To support parallel CLI builds we instruct developers to pre-process
their node_modules via ngcc at the command line.
Despite doing this ngcc was still trying to set a lock when it was being
triggered by the CLI for packages that are not going to be processed,
since they are not compiled by Angular for instance.
This commit checks whether a target package needs to be compiled
at all before attempting to set the lock.
Fixes#35000
PR Close#35057
If ngcc gets updated to a new version then the artifacts
left in packages that were processed by the previous
version are possibly invalid.
Previously we just errored if we found packages that
had already been processed by an outdated version.
Now we automatically clean the packages that have
outdated artifacts so that they can be reprocessed
correctly with the current ngcc version.
Fixes#35082
PR Close#35079
Now `hasBeenProcessed()` will no longer throw if there
is an entry-point that has been built with an outdated
version of ngcc.
Instead it just returns `false`, which will include it in this
processing run.
This is a precursor to adding functionality that will
automatically revert outdate build artifacts.
PR Close#35079
Fixes issue with yarn_install not following yarn-path in .yarnrc when bazel run from yarn with `yarn bazel ...` (rules_nodejs: fix: unset YARN_IGNORE_PATH in yarn_install before calling yarn #1588)
PR Close#34961
Fixes#18013
Previously it was hard to debug an `expectOne` if the request had no match, as the error message was:
Expected one matching request for criteria "Match URL: /some-url?query=hello", found none.
This commit adds a bit more info to the error, by listing the actual requests received:
Expected one matching request for criteria "Match URL: /some-url?query=hello", found none. Requests received are: POST /some-url?query=world.
PR Close#27005
Previous to this commit, HTTP params like `{ a: '1', b: [], c: '3' }` resulted in a request like `a=1&&c=3` (note the double &&).
The ideal fix would probably be to stringify these params to `a=1&b=&c=3` like we do for empty string values. But that might be breaking as some APIs may rely on the absence of the parameter.
This fixes the issue in a compatible way by just removing the extra and unnecessary `&`, resulting in `a=1&c=3`.
PR Close#34896
This reverts commit cb142b6df9.
The intention of this commit was for a consumer of the `compile` function to
pass the `bazelHost` it returns into future invocations, reusing the
`FileCache` between them. However, first-party ngc_wrapped does not do this,
which caused a performance regression as the `FileCache` was no longer
shared between compilations.
PR Close#35063
Update from chokidar 2.x to 3.x in ngc/ngtsc, to eliminate any possibility
of a security issue with a downstream dependency of the package.
FW-1809 #resolve
PR Close#35047
This change changes the priority order of static styling.
Current priority:
```
(least priority)
- Static
- Component
- Directives
- Template
- Dynamic Binding
- Component
- Map/Interpolation
- Property
- Directives
- Map/Interpolation
- Property
- Template
- Map/Interpolation
- Property
(highest priority)
```
The issue with the above priority is this use case:
```
<div style="color: red;" directive-which-sets-color-blue>
```
In the above case the directive will win and the resulting color will be `blue`. However a small change of adding interpolation to the example like so. (Style interpolation is coming in https://github.com/angular/angular/pull/34202)
```
<div style="color: red; width: {{exp}}px" directive-which-sets-color-blue>
```
Changes the priority from static binding to interpolated binding which means now the resulting color is `red`. It is very surprising that adding an unrelated interpolation and style can change the `color` which was not changed. To fix that we need to make sure that the static values are associated with priority of the source (directive or template) where they were declared. The new resulting priority is:
```
(least priority)
- Component
- Static
- Map/Interpolation
- Property
- Directives
- Static
- Map/Interpolation
- Property
- Template
- Static
- Map/Interpolation
- Property
(highest priority)
```
PR Close#34938
The current logic pulls multiproviders up to the parent module's
provider list. The result is that the multi provider being defined both in
the imported ModuleWithProviders and the parent and getting an extra
item in the multi provided array of values. This PR fixes that problem
by not pulling providers in ModuleWithProviders up to the parent module.
PR Close#34914
The language service reports an error when a directive's template
context is missing a member that is being used in a template (e.g. if
`$implicit` is being used with a template context typed as `any`).
While this diagnostic message is valuable, typing template contexts
loosely as `any` or `object` is very widespread in community packages,
and often still compiles correctly, so reporting the diagnostic as an
error may be misleading to users.
This commit changes the diagnostic to be a warning, and adds additional
information about how the user can eliminate the warning entirely -- by
refining the template context type.
Closes https://github.com/angular/vscode-ng-language-service/issues/572
PR Close#35036
Sometimes, a request for definitions will return multiple of the same
definition. This can happen in at least the cases of
- two-way bindings (one of the same definition for the property and
event binding)
- multiple template binding expressions in the same attribute
- something like "*ngFor="let i of items; trackBy: test" has two
template bindings, resulting in two template binding ASTs at the
same location (the attribute span). The language service then parses
both of these bindings individually, resulting in two independent
but identical definitions. For more context, see https://github.com/angular/angular/pull/34847#discussion_r371006680.
This commit prunes duplicate definitions by signing definitions with
their location, and checking if that location signature has been seen in
a previous definition returned to the client.
PR Close#34995
In #34974 the top level dependency on `@babel/core` was bumped to
7.8.3. This commit ensures that the package.json that gets included
in the `@angular/localize` distributable is at the same version.
PR Close#35008
There are different `DebugNode`/`DebugElement` implementations (and
associated helper functions) for ViewEngine and Ivy. Additionally, these
classes/functions, which are defined inside the `core` package, are
imported by the `platform-browser` package.
Previously, this code was not tree-shaken as expected in Ivy. #30130
partially addressed the issue, but only for the case where `core` and
`platform-browser` end up in the same closure after webpack's scope
hoisting. In cases where this is not the case, our webpack/terser based
tooling is not capable of tree-shaking it.
This commit fixes the problem, by ensuring that the code retained in Ivy
mode (due to the cross-package import) does not unnecessarily reference
`DebugNode`/`DebugElement`, allowing the code to be tree-shaken away.
This results in a 7.6KB reduction in the size of the main angular.io
bundle.
Jira issue: [FW-1802](https://angular-team.atlassian.net/browse/FW-1802)
PR Close#35003
The message now gives concrete advice to developers who
experience the error due to running multiple simultaneous builds
via webpack.
Fixes#35000
PR Close#35001
This commit adds support for completions of properties on `$event`
variables in bound outputs.
This is the second major PR to support completions for `$event`
variables (https://github.com/angular/vscode-ng-language-service/issues/531).
The final completion support that must be provided is for `$event`
variables in bindings targeting DOM events, like `(click)`.
PR Close#34570
This commit makes `findOutputBinding` a utility function for the
language service, which will be used by the `expression_diagnostics`
module in #34570. Keeping the function in `locate_symbol` results in a
circular dependency between `expression_diagnostics` and
`locate_symbol`.
PR Close#34997
We had some logic for generating and passing in the `elIndex` parameter into the `hostBindings` function, but it wasn't actually being used for anything. The only place left that had a reference to it was the `StylingBuilder` and it only stored it without referencing it again.
PR Close#34969
Component's decorator handler exposes `preanalyze` method to preload async resources (templates, stylesheets). The logic in preanalysis phase may throw `FatalDiagnosticError` errors that contain useful information regarding the origin of the problem. However these errors from preanalysis phase were not intercepted in TraitCompiler, resulting in just error message text be displayed. This commit updates the logic to handle FatalDiagnosticError and transform it before throwing, so that the result diagnostic errors contain the necessary info.
PR Close#34801
For the structural directive, the 'path' will contain multiple `BoundDirectivePropertyAst` which depends on the number of directive property in the attribute value(e.g. '*ngFor="let item of []; trackBy: test;"', it has 2 `BoundDirectivePropertyAst`, 'ngForOf' and 'ngForTrackBy').
PR Close#34847
the test failures most likely result from the babel updates in the previous commit.
it does look like we lost the file path from the error message, which is something that we
should follow up no in a separate change.
PR Close#34974
Previously we relied on this package being hoisted and available, which is error prone and it would
be just a matter of time before the build would break due rehoisting of deps upon future npm package.json
changes.
PR Close#34974
It's not clear how this ever worked (npm hoisting is a suspect though), but this dep is required because
one of the tests imports @babel/generator in the ts sources.
The lack of this dep is breaking builds on the master branch.
More discussion about this issue on Slack: https://angular-team.slack.com/archives/C07DT5M6V/p1579934766007500
PR Close#34974
As part of the effort to tighten the API surface of
`TypeScriptServiceHost` in preparation for the migration to Ivy, I realized
some recently added APIs are not strictly needed.
They can be safely removed without sacrificing functionality.
This allows us to clean up the code, especially in the implementation of
QuickInfo, where the `TypeScriptServiceHost` is leaked outside of the
`LanguageService` class.
This refactoring also cleans up some duplicate code where the QuickInfo
object is generated. The logic is now consolidated into a simple
`createQuickInfo` method shared across two different implementations.
PR Close#34941
Previously we would write to class/style as strings `element.className` and `element.style.cssText`. Turns out that approach is good for initial render but not good for updates. Updates using this approach are problematic because we have to check to see if there was an out of bound write to style and than perform reconciliation. This also requires the browser to bring up CSS parser which is expensive.
Another problem with old approach is that we had to queue the DOM writes and flush them twice. Once on element advance instruction and once in `hostBindings`. The double flushing is expensive but it also means that a directive can observe that styles are not yet written (they are written after directive executes.)
The new approach uses `element.classList.add/remove` and `element.style.setProperty/removeProperty` API for updates only (it continues to use `element.className` and `element.style.cssText` for initial render as it is cheaper.) The other change is that the styling changes are applied immediately (no queueing). This means that it is the instruction which computes priority. In some circumstances it may result in intermediate writes which are than overwritten with new value. (This should be rare)
Overall this change deletes most of the previous code and replaces it with new simplified implement. The simplification results in code savings.
PR Close#34804
This change introduces several functions for manipulating items in an array in an efficient (binary search) way.
- `arraySplice` a faster version of `Array.splice()`.
- `arrayInsert` a faster version of `Array.splice(index, 0, value)`.
- `arrayInsert2` a faster version of `Array.splice(index, 0, value1, value2)`.
- `arrayInsertSorted` a way to insert a value into sorted list.
- `arrayRemoveSorted` a way to remove a value from a sorted list.
- `arrayIndexOfSorted` a way to find a value in a sorted list.
- `ArrayMap` Efficient implementation of `Map` as an `Array`.
- `arrayMapSet`, `arrayMapGet`, `arrayMapIndexOf`, and `arrayMapDelete` for manipulating `ArrayMap`s.
PR Close#34804
NOTE: This change must be reverted with previous deletes so that it code remains in build-able state.
This change deletes old styling code and replaces it with a simplified styling algorithm.
The mental model for the new algorithm is:
- Create a linked list of styling bindings in the order of priority. All styling bindings ere executed in compiled order and than a linked list of bindings is created in priority order.
- Flush the style bindings at the end of `advance()` instruction. This implies that there are two flush events. One at the end of template `advance` instruction in the template. Second one at the end of `hostBindings` `advance` instruction when processing host bindings (if any).
- Each binding instructions effectively updates the string to represent the string at that location. Because most of the bindings are additive, this is a cheap strategy in most cases. In rare cases the strategy requires removing tokens from the styling up to this point. (We expect that to be rare case)S Because, the bindings are presorted in the order of priority, it is safe to resume the processing of the concatenated string from the last change binding.
PR Close#34616
NOTE: This change deletes code and creates a BROKEN SHA. If reverting this SHA needs to be reverted with the next SHA to get back into a valid state.
PR Close#34616
This change reverts https://github.com/angular/angular/pull/28711
NOTE: This change deletes code and creates a BROKEN SHA. If reverting this SHA needs to be reverted with the next SHA to get back into a valid state.
The change removes the fact that `NgStyle`/`NgClass` is special and colaborates with the `[style]`/`[class]` to merge its styles. By reverting to old behavior we have better backwards compatiblity since it is no longer treated special and simply overwrites the styles (same as VE)
PR Close#34616
Compiler keeps track of number of slots (`vars`) which are needed for binding instructions. Normally each binding instructions allocates a single slot in the `LView` but styling instructions need to allocate two slots.
PR Close#34616
The `computeStaticStyling` will be used for computing static styling value during `firstCreatePass`.
The function takes into account static styling from the template as well as from the host bindings. The host bindings need to be merged in front of the template so that they have the correct priority.
PR Closes#34418
Parsing styling is now simplified to be used like so:
```
for (let i = parseStyle(text); i <= 0; i = parseStyleNext(text, i)) {
const key = getLastParsedKey();
const value = getLastParsedValue();
...
}
```
This change makes it easier to invoke the parser from other locations in the system without paying the cost of creating and iterating over `Map` of styles.
PR Closes#34418
This change moves information from instructions to declarative position:
- `ɵɵallocHostVars(vars)` => `DirectiveDef.hostVars`
- `ɵɵelementHostAttrs(attrs)` => `DirectiveDef.hostAttrs`
When merging directives it is necessary to know about `hostVars` and `hostAttrs`. Before this change the information was stored in the `hostBindings` function. This was problematic, because in order to get to the information the `hostBindings` would have to be executed. In order for `hostBindings` to be executed the directives would have to be instantiated. This means that the directive instantiation would happen before we had knowledge about the `hostAttrs` and as a result the directive could observe in the constructor that not all of the `hostAttrs` have been applied. This further complicates the runtime as we have to apply `hostAttrs` in parts over many invocations.
`ɵɵallocHostVars` was unnecessarily complicated because it would have to update the `LView` (and Blueprint) while existing directives are already executing. By moving it out of `hostBindings` function we can access it statically and we can create correct `LView` (and Blueprint) in a single pass.
This change only changes how the instructions are generated, but does not change the runtime much. (We cheat by emulating the old behavior by calling `ɵɵallocHostVars` and `ɵɵelementHostAttrs`) Subsequent change will refactor the runtime to take advantage of the static information.
PR Close#34683
This adds `insertTStyleValue` but does not hook it up to anything yet.
The purpose of this function is to create a linked-list of styling
related bindings. The bindings can be traversed during flush.
The linked list also keeps track of duplicates. This is important
for binding to know if it needs to check other styles for reconciliation.
PR Close#34004
This change introduces class/style reconciliation algorithm for DOM elements.
NOTE: The code is not yet hooked up, it will be used by future style algorithm.
Background:
Styling algorithm currently has [two paths](https://hackmd.io/@5zDGNGArSxiHhgvxRGrg-g/rycZk3N5S)
when computing how the style should be rendered.
1. A direct path which concatenates styling and uses `elemnent.className`/`element.style.cssText` and
2. A merge path which uses internal data structures and uses `element.classList.add/remove`/`element.style[property]`.
The situation is confusing and hard to follow/maintain. So a future PR will remove the merge-path and do everything with
direct-path. This however breaks when some other code adds class or style to the element without Angular's knowledge.
If this happens instead of switching from direct-path to merge-path algorithm, this change provides a different mental model
whereby we always do `direct-path` but the code which writes to the DOM detects the situation and reconciles the out of bound write.
The reconciliation process is as follows:
1. Detect that no one has modified `className`/`cssText` and if so just write directly (fast path).
2. If out of bounds write did occur, switch from writing using `className`/`cssText` to `element.classList.add/remove`/`element.style[property]`.
This does require that the write function computes the difference between the previous Angular expected state and current Angular state.
(This requires a parser. The advantage of having a parser is that we can support `style="width: {{exp}}px" kind of bindings.`)
Compute the diff and apply it in non destructive way using `element.classList.add/remove`/`element.style[property]`
Properties of approach:
- If no out of bounds style modification:
- Very fast code path: Just concatenate string in right order and write them to DOM.
- Class list order is preserved
- If out of bounds style modification detected:
- Penalty for parsing
- Switch to non destructive modification: `element.classList.add/remove`/`element.style[property]`
- Switch to alphabetical way of setting classes.
PR Close#34004
Fixes Ivy detecting changes inside child embedded views, even though they're detached.
Note that there's on subtlety here: I made the changes inside `refreshDynamicEmbeddedViews` rather than `refreshView`, because we support detecting changes on a detached view (evidenced by a couple of unit tests), but only if it's triggered directly from the view's `ChangeDetectorRef`, however we shouldn't be detecting changes in the detached child view when something happens in the parent.
Fixes#34816.
PR Close#34846
Previously, NgtscProgram lived in the main @angular/compiler-cli package
alongside the legacy View Engine compiler. As a result, the main package
depended on all of the ngtsc internal packages, and a significant portion of
ngtsc logic lived in NgtscProgram.
This commit refactors NgtscProgram and moves the main logic of compilation
into a new 'core' package. The new package defines a new API which enables
implementers of TypeScript compilers (compilers built using the TS API) to
support Angular transpilation as well. It involves a new NgCompiler type
which takes a ts.Program and performs Angular analysis and transformations,
as well as an NgCompilerHost which wraps an input ts.CompilerHost and adds
any extra Angular files.
Together, these two classes are used to implement a new NgtscProgram which
adapts the legacy api.Program interface used by the View Engine compiler
onto operations on the new types. The new NgtscProgram implementation is
significantly smaller and easier to reason about.
The new NgCompilerHost replaces the previous GeneratedShimsHostWrapper which
lived in the 'shims' package.
A new 'resource' package is added to support the HostResourceLoader which
previously lived in the outer compiler package.
As a result of the refactoring, the dependencies of the outer
@angular/compiler-cli package on ngtsc internal packages are significantly
trimmed.
This refactoring was driven by the desire to build a plugin interface to the
compiler so that tsc_wrapped (another consumer of the TS compiler APIs) can
perform Angular transpilation on user request.
PR Close#34887
Right now, if an Angular diagnostic is generated for a TypeScript node,
the span points to the decorator Identifier, i.e. the Identifier node
like `@NgModule`, `@Component`, etc.
This is weird. It should point to the class name instead.
Note, we do not have a more fine-grained breakdown of the span when
diagnostics are emitted, this work remains to be done.
PR Close#34932
In #34288, ngtsc was refactored to separate the result of the analysis
and resolve phase for more granular incremental rebuilds. In this model,
any errors in one phase transition the trait into an error state, which
prevents it from being ran through subsequent phases. The ngcc compiler
on the other hand did not adopt this strict error model, which would
cause incomplete metadata—due to errors in earlier phases—to be offered
for compilation that could result in a hard crash.
This commit updates ngcc to take advantage of ngtsc's `TraitCompiler`,
that internally manages all Ivy classes that are part of the
compilation. This effectively replaces ngcc's own `AnalyzedFile` and
`AnalyzedClass` types, together with all of the logic to drive the
`DecoratorHandler`s. All of this is now handled in the `TraitCompiler`,
benefiting from its explicit state transitions of `Trait`s so that the
ngcc crash is a thing of the past.
Fixes#34500
Resolves FW-1788
PR Close#34889
This syntax is invalid in these source files and does result in
compilation errors as the constructor parameters could not be resolved.
This hasn't been an issue until now as those errors were ignored in the
tests, but future work to introduce the Trait system of ngtsc into
ngcc will cause these errors to prevent compilation, resulting in broken
tests.
PR Close#34889
Previously, while trying to build an `NgccReflectionHost`'s
`privateDtsDeclarationMap`, `computePrivateDtsDeclarationMap()` would
try to collect exported declarations from all source files of the
program (i.e. without checking whether they were within the target
package, as happens for declarations in `.d.ts` files).
Most of the time, that would not be a problem, because external packages
would be represented as `.d.ts` files in the program. But when an
external package had no typings, the JS files would be used instead. As
a result, the `ReflectionHost` would try to (unnecessarilly) parse the
file in order to extract exported declarations, which in turn would be
harmless in most cases.
There are certain cases, though, where the `ReflectionHost` would throw
an error, because it cannot parse the external package's JS file. This
could happen, for example, in `UmdReflectionHost`, which expects the
file to contain exactly one statement. See #34544 for more details on a
real-world failure.
This commit fixes the issue by ensuring that
`computePrivateDtsDeclarationMap()` will only collect exported
declarations from files within the target package.
Jira issue: [FW-1794](https://angular-team.atlassian.net/browse/FW-1794)
Fixes#34544
PR Close#34811
The value changes emitted additionally when enable disable were called
documented the above behaviour in AbstractControl class documentaion
Fixes#34407
PR Close#34497
This commit fixes a bug in the incremental rebuild engine of ngtsc, where if
a component was removed from its NgModule, it would not be properly
re-emitted.
The bug stemmed from the fact that whether to emit a file was a decision
based purely on the updated dependency graph, which captures the dependency
structure of the rebuild program. This graph has no edge from the component
to its former module (as it was removed, of course), so the compiler
erroneously decides not to emit the component.
The bug here is that the compiler does know, from the previous dependency
graph, that the component file has logically changed, since its previous
dependency (the module file) has changed. This information was not carried
forward into the set of files which need to be emitted, because it was
assumed that the updated dependency graph was a more accurate source of that
information.
With this commit, the set of files which need emit is pre-populated with the
set of logically changed files, to cover edge cases like this.
Fixes#34813
PR Close#34912
It was previously defined in core without being exposed publicly, whereas `getLocaleCurrencyName` and `getLocaleCurrencySymbol` were defined in common, and publicly exposed.
This commit now privately exposes `ɵgetLocaleCurrencyCode` from core, and reexports it publicly from common.
PR Close#34810
This commit elaborates diagnostics produced for invalid template
contexts by including the name of the embedded template type using the
template context, and in the common case that the implicity property is
being referenced (e.g. in a `for .. of ..` expression), suggesting to
refine the type of the context. This suggestion is provided because
users will sometimes use a base class as the type of the context in the
embedded view, and a more specific context later on (e.g. in an
`ngOnChanges` method).
Closes https://github.com/angular/vscode-ng-language-service/issues/251
PR Close#34751
Pete Bacon Darwin
Greg Magolan
Miško Hevery
crisbeto
Alex Rickabaugh
ivanwonder
Pusztai Tibor
George Kalpakas
JiaLiPassion
Andrew Kushnir
zhuyujie
Paul Gschwendtner
Pawel Kozlowski
Kara Erickson
Alan Agius
Keen Yee Liau
ayazhafiz
Francesco Leardini
Igor Minar
JoostK
Stephen Fluin
Andrew Scott
Sonu Kapoor
cexbrayat
Adam
Ayaz Hafiz
Joey Perrott
Matias Niemelä
ajitsinghkaler