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feat(compiler): add support for safe calls in templates #44580

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@crisbeto crisbeto commented Dec 30, 2021

Adds support for safely calling functions that may be undefined inside template expressions. E.g. maybeUndefined?.()

Fixes #42298.

@crisbeto crisbeto changed the title feat(core): add support for safe calls in templates feat(compiler): add support for safe calls in templates Dec 30, 2021
@crisbeto crisbeto force-pushed the 42298/safe-calls branch 2 times, most recently from 03b500a to 8f34d6a Compare December 30, 2021 09:07
@crisbeto crisbeto marked this pull request as ready for review December 30, 2021 09:32
@crisbeto crisbeto added action: review The PR is still awaiting reviews from at least one requested reviewer area: compiler Issues related to `ngc`, Angular's template compiler target: minor This PR is targeted for the next minor release labels Dec 30, 2021
@ngbot ngbot bot modified the milestone: Backlog Dec 30, 2021
template: `
<span [title]="'Your last name is ' + (person.getLastName?.() ?? 'unknown')">
Hello, {{ person.getName?.() }}!
You are a Balrog: {{ person.getSpecies?.()?.()?.()?.()?.() || 'unknown' }}
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You shall not pass (but the test should).

@dylhunn dylhunn removed their request for review January 4, 2022 20:40
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I would appreciate if #44447 can land before this, especially since that one has to be cherry-picked into the patch branch (so if it lands after this there's a guaranteed cherry-pick conflict)

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I've addressed the feedback.

@crisbeto crisbeto requested a review from atscott January 7, 2022 08:49
crisbeto added a commit to crisbeto/angular that referenced this pull request Jan 7, 2022
…y read

This was flagged during the code review of angular#44580. When generating a type check block, we were interpreting any call to `$any` as an `as any` cast, even if it's part of a `PropertyRead` (e.g. `foo.$any(1)`). This is handled correctly in other parts of the compiler, but it looks like it was missed in the type checker.
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LGTM. Nice to see that we have all safe operators now.

atscott pushed a commit that referenced this pull request Jan 7, 2022
…y read (#44657)

This was flagged during the code review of #44580. When generating a type check block, we were interpreting any call to `$any` as an `as any` cast, even if it's part of a `PropertyRead` (e.g. `foo.$any(1)`). This is handled correctly in other parts of the compiler, but it looks like it was missed in the type checker.

PR Close #44657
atscott pushed a commit that referenced this pull request Jan 7, 2022
…y read (#44657)

This was flagged during the code review of #44580. When generating a type check block, we were interpreting any call to `$any` as an `as any` cast, even if it's part of a `PropertyRead` (e.g. `foo.$any(1)`). This is handled correctly in other parts of the compiler, but it looks like it was missed in the type checker.

PR Close #44657
@atscott atscott removed their request for review January 7, 2022 18:12
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All the feedback should be addressed now. Setting to blocked until #44447 is merged in.

Adds support for safely calling functions that may be undefined inside template expressions. E.g. `maybeUndefined?.()`

Fixes angular#42298.
@crisbeto crisbeto added action: merge The PR is ready for merge by the caretaker action: presubmit The PR is in need of a google3 presubmit and removed state: blocked action: review The PR is still awaiting reviews from at least one requested reviewer labels Jan 11, 2022
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Rebased on top of #44447. Unblocking.

@crisbeto crisbeto removed the action: presubmit The PR is in need of a google3 presubmit label Jan 11, 2022
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atscott commented Jan 11, 2022

This PR was merged into the repository by commit a4ab6d6.

@atscott atscott closed this in a4ab6d6 Jan 11, 2022
amitbeck pushed a commit to amitbeck/angular that referenced this pull request Jan 13, 2022
…y read (angular#44657)

This was flagged during the code review of angular#44580. When generating a type check block, we were interpreting any call to `$any` as an `as any` cast, even if it's part of a `PropertyRead` (e.g. `foo.$any(1)`). This is handled correctly in other parts of the compiler, but it looks like it was missed in the type checker.

PR Close angular#44657
crapStone pushed a commit to Calciumdibromid/CaBr2 that referenced this pull request Feb 7, 2022
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@angular/animations](https://github.com/angular/angular) | dependencies | minor | [`13.1.2` -> `13.2.1`](https://renovatebot.com/diffs/npm/@angular%2fanimations/13.1.2/13.2.1) |
| [@angular/common](https://github.com/angular/angular) | dependencies | minor | [`13.1.2` -> `13.2.1`](https://renovatebot.com/diffs/npm/@angular%2fcommon/13.1.2/13.2.1) |
| [@angular/compiler](https://github.com/angular/angular) | dependencies | minor | [`13.1.2` -> `13.2.1`](https://renovatebot.com/diffs/npm/@angular%2fcompiler/13.1.2/13.2.1) |
| [@angular/compiler-cli](https://github.com/angular/angular) | devDependencies | minor | [`13.1.2` -> `13.2.1`](https://renovatebot.com/diffs/npm/@angular%2fcompiler-cli/13.1.2/13.2.1) |
| [@angular/core](https://github.com/angular/angular) | dependencies | minor | [`13.1.2` -> `13.2.1`](https://renovatebot.com/diffs/npm/@angular%2fcore/13.1.2/13.2.1) |
| [@angular/forms](https://github.com/angular/angular) | dependencies | minor | [`13.1.2` -> `13.2.1`](https://renovatebot.com/diffs/npm/@angular%2fforms/13.1.2/13.2.1) |
| [@angular/platform-browser](https://github.com/angular/angular) | dependencies | minor | [`13.1.2` -> `13.2.1`](https://renovatebot.com/diffs/npm/@angular%2fplatform-browser/13.1.2/13.2.1) |
| [@angular/platform-browser-dynamic](https://github.com/angular/angular) | dependencies | minor | [`13.1.2` -> `13.2.1`](https://renovatebot.com/diffs/npm/@angular%2fplatform-browser-dynamic/13.1.2/13.2.1) |
| [@angular/router](https://github.com/angular/angular) | dependencies | minor | [`13.1.2` -> `13.2.1`](https://renovatebot.com/diffs/npm/@angular%2frouter/13.1.2/13.2.1) |

---

### Release Notes

<details>
<summary>angular/angular</summary>

### [`v13.2.1`](https://github.com/angular/angular/blob/HEAD/CHANGELOG.md#&#8203;1321-2022-02-02)

[Compare Source](angular/angular@13.2.0...13.2.1)

##### animations

| Commit | Type | Description |
| -- | -- | -- |
| [4644886aaf](angular/angular@4644886) | perf | remove no longer needed CssKeyframes classes ([#&#8203;44903](angular/angular#44903)) ([#&#8203;44919](angular/angular#44919)) |

##### common

| Commit | Type | Description |
| -- | -- | -- |
| [b4e4617807](angular/angular@b4e4617) | fix | include query parameters for open HTTP requests in `verify` ([#&#8203;44917](angular/angular#44917)) |

##### compiler-cli

| Commit | Type | Description |
| -- | -- | -- |
| [0778e6f7d7](angular/angular@0778e6f) | fix | accept nullish coalescing operator for any and unknown types ([#&#8203;44862](angular/angular#44862)) |
| [07185f4ed1](angular/angular@07185f4) | fix | enable nullish coalescing check only with `strictNullChecks` ([#&#8203;44862](angular/angular#44862)) |
| [4a5ad1793f](angular/angular@4a5ad17) | fix | ensure casing of logical paths is preserved ([#&#8203;44798](angular/angular#44798)) |

##### core

| Commit | Type | Description |
| -- | -- | -- |
| [7ec482d9c2](angular/angular@7ec482d) | fix | Add back support for namespace URIs in createElement of dom renderer ([#&#8203;44914](angular/angular#44914)) |
| [250dc40a46](angular/angular@250dc40) | fix | flush delayed scoping queue while setting up TestBed ([#&#8203;44814](angular/angular#44814)) |

##### forms

| Commit | Type | Description |
| -- | -- | -- |
| [1aebbf8714](angular/angular@1aebbf8) | fix | ensure OnPush ancestors are marked dirty when the promise resolves ([#&#8203;44886](angular/angular#44886)) |
| [6b7fffcbeb](angular/angular@6b7fffc) | fix | Update the typed forms migration schematic to find all files. ([#&#8203;44881](angular/angular#44881)) |

#### Special Thanks

Alan, Andrew Kushnir, Andrew Scott, Aristeidis Bampakos, Arjen, Daniel Díaz, David Shevitz, Doug Parker, Dylan Hunn, Esteban Gehring, George Kalpakas, Jessica Janiuk, JoostK, Juri Strumpflohner, Lee Robinson, Maarten Tibau, Paul Gschwendtner, Theodore Brown, arturovt, dario-piotrowicz, fru2, markostanimirovic and mgechev

<!-- CHANGELOG SPLIT MARKER -->

### [`v13.2.0`](https://github.com/angular/angular/blob/HEAD/CHANGELOG.md#&#8203;1320-2022-01-26)

[Compare Source](angular/angular@13.1.3...13.2.0)

#### Deprecations

#####

-   The `CachedResourceLoader` and `RESOURCE_CACHE_PROVIDER` symbols were previously necessary in some cases to test AOT-compiled components with View Engine, but they are no longer needed since Ivy.

-   The `ComponentFactory` and `ComponentFactoryResolver` classes are deprecated. Since Ivy, there is no need to resolve Component factories. Please use other APIs where you Component classes can be used directly (without resolving their factories).

-   Since Ivy, the `CompilerOptions.useJit` and `CompilerOptions.missingTranslation` config options are unused, passing them has no effect.

#####

| Commit | Type | Description |
| -- | -- | -- |
| [9c11183e74](angular/angular@9c11183) | docs | deprecate `CachedResourceLoader` and `RESOURCE_CACHE_PROVIDER` symbols ([#&#8203;44749](angular/angular#44749)) |
| [9f12e7fea4](angular/angular@9f12e7f) | docs | deprecate `ComponentFactory` and `ComponentFactoryResolver` symbols ([#&#8203;44749](angular/angular#44749)) |
| [4e95a316ce](angular/angular@4e95a31) | docs | deprecate unused config options from the `CompilerOptions` interface ([#&#8203;44749](angular/angular#44749)) |

##### compiler

| Commit | Type | Description |
| -- | -- | -- |
| [a4ab6d6b72](angular/angular@a4ab6d6) | feat | add support for safe calls in templates ([#&#8203;44580](angular/angular#44580)) |
| [abd1bc8039](angular/angular@abd1bc8) | fix | correct spans when parsing bindings with comments ([#&#8203;44785](angular/angular#44785)) |
| [ed67a074ce](angular/angular@ed67a07) | fix | properly compile DI factories when coverage reporting is enabled ([#&#8203;44732](angular/angular#44732)) |

##### compiler-cli

| Commit | Type | Description |
| -- | -- | -- |
| [fa835b5a29](angular/angular@fa835b5) | feat | enable extended diagnostics by default ([#&#8203;44712](angular/angular#44712)) |
| [73424def13](angular/angular@73424de) | feat | provide the animations for `DirectiveMeta` ([#&#8203;44630](angular/angular#44630)) |
| [fe3e4d6865](angular/angular@fe3e4d6) | fix | Handle `ng-template` with structural directive in indexer ([#&#8203;44788](angular/angular#44788)) |
| [7316e72ec5](angular/angular@7316e72) | fix | properly index <svg> elements when on a template ([#&#8203;44785](angular/angular#44785)) |
| [100091ebf0](angular/angular@100091e) | fix | remove leftover `_extendedTemplateDiagnostics` requirements ([#&#8203;44777](angular/angular#44777)) |
| [d2ae96f742](angular/angular@d2ae96f) | fix | skip `ExtendedTemplateCheckerImpl` construction if there were configuration errors ([#&#8203;44778](angular/angular#44778)) |

##### core

| Commit | Type | Description |
| -- | -- | -- |
| [5626b34264](angular/angular@5626b34) | fix | consistently use namespace short name rather than URI ([#&#8203;44766](angular/angular#44766)) |
| [94bfcdd9de](angular/angular@94bfcdd) | fix | error if NgZone.isInAngularZone is called with a noop zone ([#&#8203;44800](angular/angular#44800)) |

##### forms

| Commit | Type | Description |
| -- | -- | -- |
| [72092ebd26](angular/angular@72092eb) | feat | Allow a FormControl to use initial value as default. ([#&#8203;44434](angular/angular#44434)) |
| [f7aa937cac](angular/angular@f7aa937) | fix | Make some minor fixups for forward-compatibility with typed forms. ([#&#8203;44540](angular/angular#44540)) |

##### router

| Commit | Type | Description |
| -- | -- | -- |
| [5a4ddfd4f5](angular/angular@5a4ddfd) | feat | Allow symbol keys for `Route` `data` and `resolve` properties ([#&#8203;44519](angular/angular#44519)) |

#### Special Thanks

Alex Rickabaugh, Andrew Kushnir, Andrew Scott, Dario Piotrowicz, Derek Cormier, Doug Parker, Douglas Parker, Dylan Hunn, George Kalpakas, Jessica Janiuk, JoostK, Kristiyan Kostadinov, Martin Probst, Oleg Postoev, Stephanie Tuerk, Tim Bowersox, Wiley Marques, Yousaf Nawaz, dario-piotrowicz, iRealNirmal, ivanwonder and shejialuo

<!-- CHANGELOG SPLIT MARKER -->

### [`v13.1.3`](https://github.com/angular/angular/blob/HEAD/CHANGELOG.md#&#8203;1313-2022-01-19)

[Compare Source](angular/angular@13.1.2...13.1.3)

##### animations

| Commit | Type | Description |
| -- | -- | -- |
| [af0a152a2c](angular/angular@af0a152) | fix | apply setStyles to only rootTimelines ([#&#8203;44515](angular/angular#44515)) |

##### compiler-cli

| Commit | Type | Description |
| -- | -- | -- |
| [626f3f230b](angular/angular@626f3f2) | perf | reduce analysis work during incremental rebuilds ([#&#8203;44731](angular/angular#44731)) |

##### ngcc

| Commit | Type | Description |
| -- | -- | -- |
| [f9ca4d8499](angular/angular@f9ca4d8) | fix | support element accesses for export declarations ([#&#8203;44669](angular/angular#44669)) |

#### Special Thanks

Alan Agius, Andrew Kushnir, AnkitSharma-007, Daniel Díaz, Dmytro Mezhenskyi, Jessica Janiuk, Joey Perrott, JoostK, Ramesh Thiruchelvam, dario-piotrowicz, iRealNirmal and Łukasz Holeczek

<!-- CHANGELOG SPLIT MARKER -->

</details>

---

### Configuration

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🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Renovate will not automatically rebase this PR, because other commits have been found.

🔕 **Ignore**: Close this PR and you won't be reminded about these updates again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox.

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).

Co-authored-by: cabr2-bot <cabr2.help@gmail.com>
Co-authored-by: crapStone <crapstone@noreply.codeberg.org>
Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1148
Reviewed-by: crapStone <crapstone@noreply.codeberg.org>
Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
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Support safe function calls in templates
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