Commit Graph

17708 Commits

Author SHA1 Message Date
Andrew Kushnir 7d0af179e3 style(forms): reformat of the `forms` package after clang update (#36466)
PR Close #36466
2020-04-07 09:47:09 -07:00
JiaLiPassion 416c786774 fix(zone.js): should not try to patch fetch if it is not writable (#36311)
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
2020-04-06 15:34:33 -07:00
Joey Perrott 93302b7fb8 build: update to latest version of husky (#36459)
PR Close #36459
2020-04-06 15:33:26 -07:00
Keen Yee Liau eb8c6c7eff test(language-service): Move pipe tests to TEST_TEMPLATE (#36407)
This commit simplifies the completion tests for pipes by moving them to TEST_TEMPLATE.

PR Close #36407
2020-04-06 15:32:33 -07:00
George Kalpakas 8660806ddc build(docs-infra): renamed `e2e` property of `example-config.json` to `tests` (#36143)
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
2020-04-06 15:31:07 -07:00
George Kalpakas 4c5e085c93 build(docs-infra): update docs examples `package.json` templates wrt `core-js` (#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
2020-04-06 15:31:07 -07:00
George Kalpakas d707124fd9 test(docs-infra): fix unit tests and run them for specific docs examples on CI (#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
2020-04-06 15:31:07 -07:00
George Kalpakas aece3669e5 build(docs-infra): switch docs examples to Ivy (#36143)
The docs examples are switched to Ivy. On CI, the tests are run with
both Ivy and ViewEngine.

Partially addresses:
[FW-1609](https://angular-team.atlassian.net/browse/FW-1609)

PR Close #36143
2020-04-06 15:31:07 -07:00
Priyash Patil 09c84169d5 docs: fix broken guide link (tutorial/index --> tutorial) (#36453)
Replace broken link (`tutorial/index`) with `tutorial`.

PR Close #36453
2020-04-06 13:56:00 -07:00
Paul Gschwendtner d43c30688a fix(core): avoid migration error when non-existent symbol is imported (#36367)
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
2020-04-06 13:21:54 -07:00
Pete Bacon Darwin ee70a18a75 fix(ngcc): don't crash on cyclic source-map references (#36452)
The source-map flattening was throwing an error when there
is a cyclic dependency between source files and source-maps.
The error was either a custom one describing the cycle, or a
"Maximum call stack size exceeded" one.

Now this is handled more leniently, resulting in a partially loaded
source file (or source-map) and a warning logged.

Fixes #35727
Fixes #35757
Fixes https://github.com/angular/angular-cli/issues/17106
Fixes https://github.com/angular/angular-cli/issues/17115

PR Close #36452
2020-04-06 13:19:53 -07:00
Alan Agius 76a8cd57ae fix(ngcc): add process title (#36448)
Add process.title, so it's clearly in the task manager when ngcc is running

See: https://github.com/angular/angular/issues/36414#issuecomment-609644282

PR Close #36448
2020-04-06 13:19:17 -07:00
Pete Bacon Darwin 4c7f89ff6d ci: exclude ngcc directory from fw-compiler pull-approve rule (#35933)
ngcc has its own pull-approve group

PR Close #35933
2020-04-06 13:16:37 -07:00
Pete Bacon Darwin f9fb8338f5 fix(ngcc): support ignoring deep-imports via package config (#36423)
Recently we added support for ignoring specified deep-import
warnings by providing sets of regular expressions within the
`ngcc.config.js` file. But this was only working for the project
level configuration.

This commit fixes ngcc so that it will also read these regular
expressions from package level configuration too.

Fixes #35750

PR Close #36423
2020-04-06 11:32:09 -07:00
Pete Bacon Darwin 6b3aa60446 fix(ngcc): support simple `browser` property in entry-points (#36396)
The `browser` package.json property is now supported to the same
level as `main` - i.e. it is sniffed for UMD, ESM5 and CommonJS.

The `browser` property can also contain an object with file overrides
but this is not supported by ngcc.

Fixes #36062

PR Close #36396
2020-04-06 11:31:10 -07:00
Pete Bacon Darwin 2463548fa7 fix(ngcc): sniff `main` property for ESM5 format (#36396)
Previously, `main` was only checked for `umd` or `commonjs`
formats. Now if there are `import` or `export` statements in the
source file it will be deemed to be in `esm5` format.

Fixes #35788

PR Close #36396
2020-04-06 11:31:10 -07:00
Keen Yee Liau 1140bbc25c refactor(language-service): reformat using clang-format (#36426)
clang-format was recently updated and any PRs that touch files in the
language service will have to reformat all the files.

Instead of changing the formatting in those PRs, this PR formats all
files in language-service package once and for all.

PR Close #36426
2020-04-06 09:29:42 -07:00
George Kalpakas 1b4df6484e docs: add missing command in `WebWorker` guide (#36397)
The command was accidentally removed in #36383

PR Close #36397
2020-04-06 09:29:17 -07:00
Joey Perrott f40d51733a fix(dev-infra): use commit message validation from @angular/dev-infra-private (#36172)
Prior to this change we manage a local version of commit message validation
in addition to the commit message validation tool contained in the ng-dev
tooling.  By adding the ability to validate a range of commit messages
together, the remaining piece of commit message validation that is in the
local version is replicated.

We use both commands provided by the `ng-dev commit-message` tooling:
- pre-commit-validate: Set to automatically run on an git hook to validate
    commits as they are created locally.
- validate-range: Run by CI for every PR, testing that all of the commits
    added by the PR are valid when considered together.  Ensuring that all
    fixups are matched to another commit in the change.

PR Close #36172
2020-04-06 09:28:52 -07:00
Ayaz Hafiz e893c5a330 fix(compiler-cli): pass real source spans where they are empty (#31805)
Some consumers of functions that take `ParseSourceSpan`s currently pass
empty and incorrect source spans. This fixes those cases.

PR Close #31805
2020-04-06 09:28:27 -07:00
Pete Bacon Darwin 8be8466a00 style(ngcc): reformat of ngcc after clang update (#36447)
PR Close #36447
2020-04-06 09:26:57 -07:00
Doguhan Uluca c8bef1259c docs: adding Doguhan Uluca as GDE resource (#34789)
PR Close #34789
2020-04-03 14:03:57 -07:00
Mikel Ward 568e9df1d6 fix(router): allow UrlMatcher to return null (#36402)
The matcher is allowed to return null per
https://angular.io/api/router/UrlMatcher#usage-notes

And run `yarn gulp format` to pick up recent clang format changes.

Closes #29824

BREAKING CHANGE: UrlMatcher's type now reflects that it could always return
    null.

    If you implemented your own Router or Recognizer class, please update it to
    handle matcher returning null.

PR Close #36402
2020-04-03 11:16:23 -07:00
Joey Perrott a555fdba32 build: update pullapprove config to better handle global approvals (#36384)
Beginning with this change, global approvals will now require the approver
to include `Reviewed-for: global-approvers`, and a docs global approval
requires `Reviewed-for: global-docs-approvers`.

Historically, providing a review by any member of the global reviewer
groups would automatically be considered a global review.  This change
enforces that global approval should be an intentional, explicit action.

The global-approvers and global-docs-approvers group will not be
requested as reviews by pullapprove.

PR Close #36384
2020-04-03 11:11:30 -07:00
Joey Perrott 36535e9abd fix(dev-infra): correct pullapprove global approval regex (#36384)
PR Close #36384
2020-04-03 11:11:30 -07:00
Joey Perrott 6402a9ae2a build: rebuild yarn lock from scratch (#36377)
Rebuild the yarn lock file from scratch to collapse instances where
one package is able to satisfy multiple dependencies.  Currently we
have some situations where we have multiple versions when one would
work.

Example:
```
"@babel/code-frame@^7.0.0":
  version "7.0.0"
  resolved "https://registry.yarnpkg.com/@babel/cod
  integrity sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij
  dependencies:
    "@babel/highlight" "^7.0.0"

"@babel/code-frame@^7.5.5":
  version "7.5.5"
  resolved "https://registry.yarnpkg.com/@babel/cod
  integrity sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQ
  dependencies:
    "@babel/highlight" "^7.0.0"

"@babel/code-frame@^7.8.3":
  version "7.8.3"
  resolved "https://registry.yarnpkg.com/@babel/cod
  integrity sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0j
  dependencies:
    "@babel/highlight" "^7.8.3"
```

becomes

```
"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.5.5", "@babel/code-frame@^7.8.3":
  version "7.8.3"
  resolved "https://registry.yarnpkg.com/@babel/cod
  integrity sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0j
  dependencies:
    "@babel/highlight" "^7.8.3"
```

PR Close #36377
2020-04-03 11:09:17 -07:00
George Kalpakas ca25c957bf fix(ngcc): correctly detect imported TypeScript helpers (#36284)
The `NgccReflectionHost`s have logic for detecting certain known
declarations (such as `Object.assign()` and TypeScript helpers), which
allows the `PartialEvaluator` to evaluate expressions it would not be
able to statically evaluate otherwise.

In #36089, `DelegatingReflectionHost` was introduced, which delegates to
a TypeScript `ReflectionHost` when reflecting on TypeScript files, which
for ngcc's case means `.d.ts` files of dependencies. As a result, ngcc
lost the ability to detect TypeScript helpers imported from `tslib`,
because `DelegatingReflectionHost` was not able to apply the known
declaration detection logic while reflecting on `tslib`'s `.d.ts` files.

This commit fixes this by ensuring `DelegatingReflectionHost` calls the
`NgccReflectionHost`'s `detectKnownDeclaration()` method as necessary,
even when using the TypeScript `ReflectionHost`.

NOTE:
The previous commit exposed a bug in ngcc that was hidden due to the
tests' being inconsistent with how the `ReflectionHost`s are used in the
actual program. The changes in this commit are verified by ensuring the
failing tests are now passing (hence no new tests are added).

PR Close #36284
2020-04-03 11:08:46 -07:00
George Kalpakas 93f07aee6c test(ngcc): use `DelegatingReflectionHost` for testing `NgccReflectionHost`s (#36284)
In #36089, `DelegatingReflectionHost` was introduced. Under the hood, it
delegates another `NgccReflectionHost` in order to reflect over the
program's source files, while using a different TypeScript
`ReflectionHost` to reflect over `.d.ts` files (which is how external
dependencies are represented in the program).

Previously, the `NgccReflectionHost`s were used directly in tests. This
does not exercise them in the way they are exercised in the actual
program, because (when used directly) they will also reflect on `.d.ts`
files too (instead of delegating to the TypeScript `ReflectionHost`).
This could hide bugs that would happen on the actual program.

This commit fixes this by using the `DelegatingReflectionHost` in the
various `NgccReflectionHost` tests.

NOTE:
This change will cause some of the existing tests to start failing.
These failures demonstrate pre-existing bugs in ngcc, that were hidden
due to the tests' being inconsistent with how the `ReflectionHost`s are
used in the actual program. They will be fixed in the next commit.

PR Close #36284
2020-04-03 11:08:46 -07:00
George Kalpakas 0af6e9fcbb refactor(ngcc): move logic for identifying known declarations to method (#36284)
The `NgccReflectionHost`s have logic for detecting certain known
declarations (such as `Object.assign()` and TypeScript helpers), which
allows the `PartialEvaluator` to evaluate expressions it would not be
able to statically evaluate otherwise.

This commit moves the logic for identifying these known declarations to
dedicated methods. This is in preparation of allowing ngcc's
`DelegatingReflectionHost` (introduced in #36089) to also apply the
known declaration detection logic when reflecting on TypeScript sources.

PR Close #36284
2020-04-03 11:08:46 -07:00
Wagner Maciel 008e12edda fix(benchpress): fix typings in lview_debug.ts (#36236)
* Installing & using benchpress was throwing typescript errors because typings were not defined for the getters in lview_debug.ts

PR Close #36236
2020-04-03 11:06:07 -07:00
Sonu Kapoor 1927d0c7db docs: place download section in angular forms to the top (#36075)
This commit partially addresses #35459

PR Close #36075
2020-04-03 11:05:31 -07:00
Sonu Kapoor 9a0a90feb3 docs: place download section in angular forms validation to the top of the page (#36074)
This commit partially addresses #35459

PR Close #36074
2020-04-03 11:03:36 -07:00
Sonu Kapoor 76d86d5a07 docs: place download section in angular pipes to the top (#36073)
This commit partially addresses #35459

PR Close #36073
2020-04-03 11:01:08 -07:00
Sonu Kapoor de7a9a3b93 docs: place download section to the top of the page (#36067)
Previously, the download link to the example for the angular element
guide was in the middle of the page. To make it easier for the user to
find the download link, it has been placed to the top of the page.

This commit partially addresses #35459

PR Close #36067
2020-04-03 11:00:26 -07:00
Alan Agius 04f61c0c3e build: enable `strictTemplates` in AIO (#36391)
PR Close #36391
2020-04-02 10:53:12 -07:00
Paul Gschwendtner c810ac7153 build: sort module resolution warnings in ts-circular-deps tool (#36361)
For better overview of modules that cannot be resolved in the
`ts-circular-deps` tool, the warnings are now sorted.

Additionally, an empty line between fixed and new circular dependencies
is now printed. That should slightly help with distinguishing.

PR Close #36361
2020-04-02 10:52:47 -07:00
Paul Gschwendtner c24ad560fa feat(core): undecorated-classes migration should handle derived abstract classes (#35339)
In version 10, undecorated base classes that use Angular features need
to be decorated explicitly with `@Directive()`. Additionally, derived
classes of abstract directives need to be decorated.

The migration already handles this for undecorated classes that are
not explicitly decorated, but since in V9, abstract directives can be
used, we also need to handle this for explicitly decorated abstract
directives. e.g.

```
@Directive()
export class Base {...}

// needs to be decorated by migration when updating from v9 to v10
export class Wrapped extends Base {}

@Component(...)
export class Cmp extends Wrapped {}
```

PR Close #35339
2020-04-02 10:51:49 -07:00
Paul Gschwendtner 3d2db5c5f0 test: add integration test for undecorated-classes-with-decorated-fields migration (#35339)
We don't have an integration test for the `undecorated-classes-with-decorated-fields
migration. For consistency and to cover for the latest changes, we add
it to the `ng update` integration test.

PR Close #35339
2020-04-02 10:51:48 -07:00
Paul Gschwendtner 32eafef6a7 fix(core): undecorated-classes-with-decorated-fields migration does not decorate derived classes (#35339)
The `undecorated-classes-with-decorated-fields` migration has been
introduced with 904a2018e0, but misses
logic for decorating derived classes of undecorated classes which use
Angular features. Example scenario:

```ts
export abstract class MyBaseClass {
  @Input() someInput = true;
}

export abstract class BaseClassTwo extends MyBaseClass {}

@Component(...)
export class MyButton extends BaseClassTwo {}
```

Both abstract classes would need to be migrated. Previously, the migration
only added `@Directive()` to `MyBaseClass`, but with this change, it
also decorates `BaseClassTwo`.

This is necessary because the Angular Compiler requires `BaseClassTwo` to
have a directive definition when it flattens the directive metadata for
`MyButton` in order to perform type checking. Technically, not decorating
`BaseClassTwo` does not break at runtime.

We basically want to enforce consistent use of `@Directive` to simplify the
mental model. [See the migration guide](https://angular.io/guide/migration-undecorated-classes#migrating-classes-that-use-field-decorators).

Fixes #34376.

PR Close #35339
2020-04-02 10:51:48 -07:00
Paul Gschwendtner 2366480250 refactor(core): move schematic import manager to shared utils (#35339)
The import manager has been created for both the `missing-injectable`
and `undecorated-classes-with-di` migration. Both initial PRs brought
in the manager class, so the manager is duplicated in the schematics.

In order to reduce this duplication, and to expose the manager to other
schematics/migrations, we move it into the shared schematic utils.

PR Close #35339
2020-04-02 10:51:48 -07:00
Paul Gschwendtner 8e55a11283 refactor(core): move schematic base classes logic into shared utils (#35339)
Moves the `findBaseClassDeclarations` method into the shared
schematic utilities. This method will be useful for future
migrations, and for planned changes to the
`undecorated-classes-with-decorated-fields` migration.

PR Close #35339
2020-04-02 10:51:48 -07:00
crisbeto e9de28111d build: enable service-worker tests on saucelabs (#36129)
Enables the `service-worker` tests on Saucelabs and fixes some issues that were preventing them from running on IE. The issues were:
1. We were serving es2017 code during tests. I've set it to es5.
2. The check which was verifying whether the environment is supported ended up hitting a `require` call in the browser which caused it to fail on browsers that don't support the `URL` API.

PR Close #36129
2020-04-01 15:37:47 -07:00
JoostK 75afd80ae8 refactor(compiler): add `@nocollapse` annotation using a synthetic comment (#35932)
In Ivy, Angular decorators are compiled into static fields that are
inserted into a class declaration in a TypeScript transform. When
targeting Closure compiler such fields need to be annotated with
`@nocollapse` to prevent them from being lifted from a static field into
a variable, as that would prevent the Ivy runtime from being able to
find the compiled definitions.

Previously, there was a bug in TypeScript where synthetic comments added
in a transform would not be emitted at all, so as a workaround a global
regex-replace was done in the emit's `writeFile` callback that would add
the `@nocollapse` annotation to all static Ivy definition fields. This
approach is no longer possible when ngtsc is running as TypeScript
plugin, as a plugin cannot control emit behavior.

The workaround is no longer necessary, as synthetic comments are now
properly emitted, likely as of
https://github.com/microsoft/TypeScript/pull/22141 which has been
released with TypeScript 2.8.

This change is required for running ngtsc as TypeScript plugin in
Bazel's `ts_library` rule, to move away from the custom `ngc_wrapped`
approach.

Resolves FW-1952

PR Close #35932
2020-04-01 15:37:06 -07:00
Ferdinand Malcher a5eb0e56b6 docs(zone.js): fix typos and align formatting (#35907)
PR Close #35907
2020-04-01 15:35:37 -07:00
Judy Bogart 4d458db1b5 docs: update and edit web-worker page (#36383)
PR Close #36383
2020-04-01 15:25:47 -07:00
Joey Perrott 24a92472bf ci: use dev-infra cli from local sources (#36326)
Use dev-infra cli from local sources rather than loading
from @angular/dev-infra-private builds.

PR Close #36326
2020-04-01 15:24:29 -07:00
Joey Perrott 43006bcc45 feat(dev-infra): standard CLI commands using yargs (#36326)
Creates a standard model for CLI commands provided by ng-dev.
Allows for us to have any of the tools/scripts extend to be
included in the ng-dev command, or be standalone using the same
yargs parser.

PR Close #36326
2020-04-01 15:24:28 -07:00
George Kalpakas 326240eb91 fix(ngcc): allow ngcc configuration to match pre-release versions of packages (#36370)
Ngcc supports providing a project-level configuration to affect how
certain dependencies are processed and also has a built-in fallback
configuration for some unmaintained packages. Each entry in these
configurations could be scoped to specific versions of a package by
providing a version range. If no version range is provided for a
package, it defaults to `*` (with the intention of matching any
version).

Previously, the installed version of a package was tested against the
version range using the [semver][1] package's `satisfies()` function
with the default options. By default, `satisfies()` does not match
pre-releases (see [here][2] for more details on reasoning). While this
makes sense when determining what version of a dependency to install
(trying to avoid unexpected breaking changes), it is not desired in the
case of ngcc.

This commit fixes it by explicitly specifying that pre-release versions
should be matched normally.

[1]: https://www.npmjs.com/package/semver
[2]: https://github.com/npm/node-semver#prerelease-tags

PR Close #36370
2020-04-01 13:32:32 -07:00
Alan Agius b59bc0e38c fix(platform-server): update `xhr2` dependency (#36366)
Previous versions of xhr2 used the depreciated "new Buffer()".

Closes #36358

PR Close #36366
2020-04-01 13:31:38 -07:00
Keen Yee Liau 5516802142 fix(compiler): avoid undefined expressions in holey array (#36343)
From G3 bug ID: 116443331

The View Engine compiler crashes when it tries to compile a test in JIT mode
that includes the d3-scale-chromatic library [1]. The d3 package initializes
some arrays using the following pattern:

```js
export var scheme = new Array(3).concat(
  "d8b365f5f5f55ab4ac",
  // ... more entries
).map(colors);
```

The stack trace from the crash is as follows:

```
TypeError: Cannot read property 'visitExpression' of undefined
    at ../../../third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts:505:39
    at JitEmitterVisitor.AbstractEmitterVisitor.visitAllObjects third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts?l=526
    at JitEmitterVisitor.AbstractEmitterVisitor.visitAllExpressions third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts?l=505
    at JitEmitterVisitor.AbstractEmitterVisitor.visitLiteralArrayExpr third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts?l=484
    at LiteralArrayExpr.visitExpression third_party/javascript/angular2/rc/packages/compiler/src/output/output_ast.ts?l=791
    at ../../../third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts:492:19
    at JitEmitterVisitor.AbstractEmitterVisitor.visitAllObjects third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts?l=526
    at JitEmitterVisitor.AbstractEmitterVisitor.visitLiteralMapExpr third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts?l=490
    at LiteralMapExpr.visitExpression third_party/javascript/angular2/rc/packages/compiler/src/output/output_ast.ts?l=819
    at ../../../third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts:505:39
    at JitEmitterVisitor.AbstractEmitterVisitor.visitAllObjects third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts?l=526
    at JitEmitterVisitor.AbstractEmitterVisitor.visitAllExpressions third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts?l=505
    at JitEmitterVisitor.AbstractEmitterVisitor.visitInvokeFunctionExpr third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_emitter.ts?l=318
    at JitEmitterVisitor.AbstractJsEmitterVisitor.visitInvokeFunctionExpr third_party/javascript/angular2/rc/packages/compiler/src/output/abstract_js_emitter.ts?l=112
    at InvokeFunctionExpr.visitExpression third_party/javascript/angular2/rc/packages/compiler/src/output/output_ast.ts?l=440
```

This is because the corresponding output AST for the array is of the form

```ts
[
  undefined,
  undefined,
  undefined,
  o.LiteralExpr,
  // ...
]
```

The output AST is clearly malformed and breaks the type representation of
`LiteralArrayExpr` in which every entry is expected to be of type `Expression`.

This commit fixes the bug by using a plain `for` loop to iterate over the
entire length of the holey array and convert undefined elements to
`LiteralExpr`.

[1]: https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/BrBG.js

PR Close #36343
2020-04-01 13:31:14 -07:00