release: cut the v12.0.0-next.4 release (#41156)

CHANGELOG.md

@@ -1,3 +1,41 @@
+# 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)
 
 

package.json

@@ -1,6 +1,6 @@
 {
   "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",