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38 changes: 38 additions & 0 deletions CHANGELOG.md
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# 12.0.0-next.4 (2021-03-10)


### Bug Fixes

* **common:** cleanup location change listeners when the root view is removed ([#40867](https://github.com/angular/angular/issues/40867)) ([38524c4](https://github.com/angular/angular/commit/38524c4d29290d3339ad2d7335a0ea84f5701d26)), closes [#31546](https://github.com/angular/angular/issues/31546)
* **core:** remove duplicated EMPTY_OBJ constant ([#41066](https://github.com/angular/angular/issues/41066)) ([bf158e7](https://github.com/angular/angular/commit/bf158e7ff0715aabeae3c2c1ac923bf8cc7e4cfd))


### Features

* **compiler:** emit @__PURE__ or [@pure](https://github.com/pure)OrBreakMyCode annotations in the generated code ([#41096](https://github.com/angular/angular/issues/41096)) ([9c21028](https://github.com/angular/angular/commit/9c210281d4073289ff4633a866e395ca34e97ef9))
* **compiler-cli:** support producing Closure-specific PURE annotations ([#41021](https://github.com/angular/angular/issues/41021)) ([fbc9df1](https://github.com/angular/angular/commit/fbc9df181ea50527cb755382b54b8b45d0f9ef39))
* **core:** manually annotate de-sugarred core tree-shakable providers with [@pure](https://github.com/pure)OrBreakMyCode ([#41096](https://github.com/angular/angular/issues/41096)) ([03d47d5](https://github.com/angular/angular/commit/03d47d570167a5a70b17552ca2c8d531683d900f))
* **core:** more precise type for `APP_INITIALIZER` token ([#40986](https://github.com/angular/angular/issues/40986)) ([ca721c2](https://github.com/angular/angular/commit/ca721c2972f44d903a0e12fae3397ab62769e649)), closes [#40729](https://github.com/angular/angular/issues/40729)
* **localize:** add scripts to migrate away from legacy message IDs ([#41026](https://github.com/angular/angular/issues/41026)) ([1735430](https://github.com/angular/angular/commit/17354304768f3c2b272c4c5d5636b5709287276f))


### BREAKING CHANGES

* **common:** Methods of the `PlatformLocation` class, namely `onPopState` and `onHashChange`,
used to return `void`. Now those methods return functions that can be called
to remove event handlers.
* **core:** The type of the `APP_INITIALIZER` token has been changed to more accurately
reflect the types of return values that are handled by Angular. Previously,
each initializer callback was typed to return `any`, this is now
`Promise<unknown> | Observable<unknown> | void`. In the unlikely event that
your application uses the `Injector.get` or `TestBed.inject` API to inject
the `APP_INITIALIZER` token, you may need to update the code to account for
the stricter type.

Additionally, TypeScript may report the TS2742 error if the `APP_INITIALIZER`
token is used in an expression of which its inferred type has to be emitted
into a .d.ts file. To workaround this, an explicit type annotation is needed,
which would typically be `Provider` or `Provider[]`.



## 11.2.5 (2021-03-10)


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2 changes: 1 addition & 1 deletion package.json
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{
"name": "angular-srcs",
"version": "12.0.0-next.3",
"version": "12.0.0-next.4",
"private": true,
"description": "Angular - a web framework for modern web apps",
"homepage": "https://github.com/angular/angular",
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