When the compiler needs to convert a type reference to a value
expression, it may encounter a type that refers to a namespaced symbol.
Such namespaces need to be handled specially as there's various forms
available. Consider a namespace named "ns":
1. One can refer to a namespace by itself: `ns`. A namespace is only
allowed to be used in a type position if it has been merged with a
class, but even if this is the case it may not be possible to convert
that type into a value expression depending on the import form. More
on this later (case a below)
2. One can refer to a type within the namespace: `ns.Foo`. An import
needs to be generated to `ns`, from which the `Foo` property can then
be read.
3. One can refer to a type in a nested namespace within `ns`:
`ns.Foo.Bar` and possibly even deeper nested. The value
representation is similar to case 2, but includes additional property
accesses.
The exact strategy of how to deal with these cases depends on the type
of import used. There's two flavors available:
a. A namespaced import like `import * as ns from 'ns';` that creates
a local namespace that is irrelevant to the import that needs to be
generated (as said import would be used instead of the original
import).
If the local namespace "ns" itself is referred to in a type position,
it is invalid to convert it into a value expression. Some JavaScript
libraries publish a value as default export using `export = MyClass;`
syntax, however it is illegal to refer to that value using "ns".
Consequently, such usage in a type position *must* be accompanied by
an `@Inject` decorator to provide an explicit token.
b. An explicit namespace declaration within a module, that can be
imported using a named import like `import {ns} from 'ns';` where the
"ns" module declares a namespace using `declare namespace ns {}`.
In this case, it's the namespace itself that needs to be imported,
after which any qualified references into the namespace are converted
into property accesses.
Before this change, support for namespaces in the type-to-value
conversion was limited and only worked correctly for a single qualified
name using a namespace import (case 2a). All other cases were either
producing incorrect code or would crash the compiler (case 1a).
Crashing the compiler is not desirable as it does not indicate where
the issue is. Moreover, the result of a type-to-value conversion is
irrelevant when an explicit injection token is provided using `@Inject`,
so referring to a namespace in a type position (case 1) could still be
valid.
This commit introduces logic to the type-to-value conversion to be able
to properly deal with all type references to namespaced symbols.
Fixes#36006
Resolves FW-1995
PR Close#36106
Although this code has been part of Angular 9.x I only noticed this
error when upgrading to Angular 9.1.x because historically the source
locale data was not injected when localizing, but as of
angular/angular-cli#16394 (9.1.0) it is now included. This tipped me off
that my other bundles were not being built properly, and this change
allows me to build a valid ES5 bundle (I have also added a verification
step to my build pipeline to alert me if this error appears again in any
of my bundles).
I found the `locales/global/*.js` file paths being referenced by the
`I18nOptions` in
@angular-devkit/build-angular/src/utils/i18n-options.ts,
and following that it looks like it is actually loaded and used in
@angular-devkit/build-angular/src/utils/process-bundle.ts. I saw the
function `terserMangle` does appear that it is likely aware of the build
being ES5, but I'm not sure why this is not producing a valid ES5
bundle.
This change updates `tools/gulp-tasks/cldr/extract.js` to produce ES5
compliant `locales/global/*.js` and that fixes my issue. However, I am
not sure if @angular-devkit/build-angular should be modified to produce
a valid ES5 bundle instead or if the files could be TypeScript rather
than JavaScript files.
A test that a valid ES5 bundle is produced would be helpful, and I hope
this is reproducible and not some issue with my config.
PR Close#36342
Previously, it was not clear that the `minLength` and `maxLength` validators
can only be used with objects that contain a `length` property. This commit
clarifies this.
PR Close#36297
fixes#34614
There's an edge case where if I use two (or more) sibling <router-outlet>s in two (or more) child routes where their parent route doesn't have a component then preactivation will trigger all canDeactivate checks with the same component because it will use wrong OutletContext.
PR Close#36302
Previously, the `pre-commit-validate` command (used in the `commit-msg`
git hook) assumed that the commit message was stored in
`.git/COMMIT_EDITMSG` file. This is usually true, but not when using
[git worktrees](https://git-scm.com/docs/git-worktree), where `.git` is
a file containing the path to the actual git directory.
This commit fixes it by taking advantage of the fact that git passes the
actual path of the file holding the commit message to the `commit-msg`
hook and husky exposes the arguments passed by git as
`$HUSKY_GIT_PARAMS`.
NOTE:
We cannot use the environment variable directly in the `commit-msg` hook
command, because environment variables need to be referenced differently
on Windows (`%VAR_NAME%`) vs macOS/Linux (`$VAR_NAME`). Instead, we pass
the name of the environment variable and the validation script reads the
variable's value off of `process.env`.
PR Close#36507
Previously we had a singleton `ROOT_SCOPE` object, from
which all `BindingScope`s derived. But this caused ngcc to
produce non-deterministic output when running multiple workers
in parallel, since each process had its own `ROOT_SCOPE`.
In reality there is no need for `BindingScope` reference names
to be unique across an entire application (or in the case of ngcc
across all the libraries). Instead we just need uniqueness within
a template.
This commit changes the compiler to create a new root `BindingScope`
each time it compiles a component's template.
Resolves#35180
PR Close#36362
In cc4b813e759f16fb0f4dfa92a0e6464ed768a629 the `getBasePaths()`
function was changed to log a warning if a `basePath()` computed from
the `paths` mappings did not exist. It turns out this is a common and
accepted scenario, so we should not log warnings in this case.
Fixes#36518
PR Close#36525
Currently the golden output of the circular-deps tool is purely
based on the order of source files passed to the tool, and on the
amount of imports inside source files.
This is actually resulting in deterministic output as running
the tool multiple times without any changes to source files,
results in the same output.
Though it seems like the tool is too strict and we can avoid
unnecessary golden changes if:
1. A source file that is part of a cycle is imported earlier (in terms
of how the analyzer visits them). This could result in the cycle path
starting with a different source file.
2. Source files which are not part of a cycle are imported earlier
(in terms of how the analyzer visits them). This could result in moved
items in the golden if re-approved (even though the cycles remain the same)
To fix this, we normalize the cycle path array that serves as
serializable data structure for the text-based goldens. Since
the paths represents a cycle, the path can be shifted in a
deterministic way so that cycles don't change unnecessarily
in the golden, and to simplify comparison of cycles.
Additionally, we sort the cycles in a deterministic way so
that the golden doesn't change unnecessarily (as explained above).
PR Close#36505
`fullTemplateTypeCheck` is no longer required since we now use `strictTemplates` which is a superset of the former option.
Follow-up on: 04f61c0c3e (r38354112)
PR Close#36502
This commit removes individual components from parsing-cases.ts and
colocate them with the actual tests. This makes the tests more readable.
PR Close#36495
1. update jasmine to 3.5
2. update @types/jasmine to 3.5
3. update @types/jasminewd2 to 2.0.8
Also fix several cases, the new jasmine 3 will help to create test cases correctly,
such as in the `jasmine 2.x` version, the following case will pass
```
expect(1 == 2);
```
But in jsamine 3, the case will need to be
```
expect(1 == 2).toBeTrue();
```
PR Close#34625
Previously, the bazel stamping regex only matched on versions
0-9 for major and minor numbers, this update allows for matching
on any number for major, minor or patch.
PR Close#36523
During static evaluation of expressions, the partial evaluator
may come across a binary + operator for which it needs to
evaluate its operands. Any of these operands may be a reference
to an enum member, in which case the enum member's value needs
to be used as literal value, not the enum member reference
itself. This commit fixes the behavior by resolving an
`EnumValue` when used as a literal value.
Fixes#35584
Resolves FW-1951
PR Close#36461
Previously, `isRelativePath()` assumed paths are *nix-style. This caused
Windows-style paths (such as `C:\foo\some-package\some-file.js`) to not
be recognized as "relative" imports.
This commit fixes this by using the OS-agnostic `isRooted()` helper and
also accounting for both styles of path delimiters: `/` and `\`
PR Close#36372
there was a typo in _resourcess.scss file there was an extra comma added some spaces too that were needed for proper styling of the code
PR Close#35935
on small mobile screens the top tab bar contains text which was not visible on small screens changed text size, margin and padding so that the text could be contained in these screens (320px to 480px)
PR Close#35935
Currently destroy hooks are stored in memory as `[1, hook, 5, hook]` where
the numbers represent the index at which to find the context and `hook` is
the function to be invoked. This breaks down for `multi` providers,
because the value at the index will be an array of providers, resulting in
the hook being invoked with an array of all the multi provider values,
rather than the provider that was destroyed. In ViewEngine `ngOnDestroy`
wasn't being called for `multi` providers at all.
These changes fix the issue by changing the structure of the destroy hooks to `[1, hook, 5, [0, hook, 3, hook]]` where the indexes inside the inner array point to the provider inside of the multi provider array. Note that this is slightly different from the original design which called for the structure to be `[1, hook, 5, [hook, hook]`, because in the process of implementing it, I realized that we wouldn't get passing the correct context if only some of the `multi` providers have `ngOnDestroy` and others don't.
I've run the newly-added `view_destroy_hooks` benchmark against these changes and compared it to master. The difference seems to be insignificant (between 1% and 2% slower).
Fixes#35231.
PR Close#35840
When TypeScript downlevels ES2015+ code to ES5, it uses some helper
functions to emulate some ES2015+ features, such as spread syntax. The
TypeScript compiler can be configured to emit these helpers into the
transpiled code (which is controlled by the `noEmitHelpers` option -
false by default). It can also be configured to import these helpers
from the `tslib` module (which is controlled by the `importHelpers`
option - false by default).
While most of the time the helpers will be either emitted or imported,
it is possible that one configures their app to neither emit nor import
them. In that case, the helpers could, for example, be made available on
the global object. This is what `@nativescript/angular`
v9.0.0-next-2019-11-12-155500-01 does. See, for example, [common.js][1].
Ngcc must be able to detect and statically evaluate these helpers.
Previously, it was only able to detect emitted or imported helpers.
This commit adds support for detecting these helpers if they are neither
emitted nor imported. It does this by checking identifiers for which no
declaration (either concrete or inline) can be found against a list of
known TypeScript helper function names.
[1]: https://unpkg.com/browse/@nativescript/angular@9.0.0-next-2019-11-12-155500-01/common.js
PR Close#36418
This commit refactors the process for determining the type of an Angular
attribute to be use a function that takes an attribute name and returns
the Angular attribute kind and name, rather than requiring the user to
query match the attribute name with the regex and query the matching
array.
This refactor prepares for a future change that will improve the
experience of completing attributes in `()`, `[]`, or `[()]` contexts.
PR Close#36301
Recent ZoneJS-related commit (416c786774) update the `promise.ts` file, but it looks like original PR was not rebased after clang update. As a result, the `lint` CircleCI job started to fail in master after merging that PR (https://github.com/angular/angular/pull/36311). This commit updates the format of the `promise.ts` script according to the new clang rules.
PR Close#36487
Close#36142
In Firefox extensions, the `window.fetch` is not configurable, that means
```
const desc = Object.getOwnPropertyDescriptor(window, 'fetch');
desc.writable === false;
```
So in this case, we should not try to patch `fetch`, otherwise, it will
throw error ('fetch is ReadOnly`)
PR Close#36311
Each docs example has an `example-config.json` configuration file. Among
other things, this file can be used to specify what commands to run in
order to test the example. (If not specified, the `run-example-e2e.js`
script will run a default `yarn e2e` command.)
Previously, the property specifying the test commands was called `e2e`.
This is because in the past only e2e tests were run for docs examples.
Since recently, some examples may specify commands for other types of
tests (such as unit tests). Therefore, calling the property that holds
the list of test commands `e2e` no longer makes sense and can be
misleading to people looking at the configuration files.
This commit renamed the property to the more generic `tests`. In the
future, the `run-example-e2e.js` script (and corresponding npm script)
should be renamed and refactored to also avoid giving the impression
that only e2e tests are run.
Discussed in:
https://github.com/angular/angular/pull/36143#discussion_r395148379
PR Close#36143
The `core-js` dependency is no longer included in `package.json` for
`cli`-type examples, but only for the `systemjs` ones. This commit
updates the `package.json` templates to reflect that (and also updates
the `npm-packages` guide accordingly).
PR Close#36143
Previously, only e2e tests were run for docs examples on CI. As a
result, unit tests (which are included in the zipped archives we provide
for users to download and play with the examples locally) were often
outdated and broken.
This commit configures specific docs examples that have meaningful unit
tests to run them on CI (via the `run-example-e2e.js` script). Where
necessary, the unit tests are fixed to ensure they pass and reflect the
changes in the corresponding component/service.
This commit also removes some auto-generated unit tests that are not
meaningful (e.g. make trivial assertions, such that a component instance
is truthy) and are often broken anyway (e.g. because the corresponding
component has been changed in ways that make the tests fail).
PR Close#36143
In rare cases a project with configured `rootDirs` that has imports to
non-existent identifiers could fail in the migration.
This happens because based on the application code, the migration could
end up trying to resolve the `ts.Symbol` of such non-existent
identifiers. This isn't a problem usually, but due to a upstream bug
in the TypeScript compiler, a runtime error is thrown.
This is because TypeScript is unable to compute a relative path from the
originating source file to the imported source file which _should_
provide the non-existent identifier. An issue for this has been reported
upstream: https://github.com/microsoft/TypeScript/issues/37731. The
issue only surfaces since our migrations don't provide an absolute base
path that is used for resolving the root directories.
To fix this, we ensure that we never use relative paths when parsing
tsconfig files. More details can be found in the TS issue.
Fixes#36346.
PR Close#36367
