<a name="13.1.0"></a>

13.1.0 (2021-12-09)

Deprecations

• The downgradeModule function calls with NgModule factories are deprecated. Please use NgModule class based downgradeModule calls instead. ### common
• TestRequest from @angular/common/http/testing no longer accepts ErrorEvent when simulating XHR errors. Instead instances of ProgressEvent should be passed, matching with the native browser behavior. ### | Commit | Description | | -- | -- | | | deprecate factory-based signature of the downgradeModule function (#44090) | ### common | Commit | Description | | -- | -- | | | incorrect error type for XHR errors in TestRequest (#36082) | | | code size reduction of ngFor directive (#44315) | ### compiler | Commit | Description | | -- | -- | | | reference ICU message IDs from their placeholders (#43534) | ### core | Commit | Description | | -- | -- | | | add migration to remove entryComponents (#44308) | | | add migration to remove entryComponents (#44322) | | | support TypeScript 4.5 (#44164) | ### http | Commit | Description | | -- | -- | | | add has() method to HttpContext class (#43887) | ### localize | Commit | Description | | -- | -- | | | support "associated message ids" for placeholders (#43534) | ### ngcc | Commit | Description | | -- | -- | | | correctly resolve UMD dependencies (#44381) | ### upgrade | Commit | Description | | -- | -- | | | support NgModule class as an argument of the downgradeModule function (#43973) | ## Special Thanks Alex Rickabaugh, Andrew Kushnir, Andrew Scott, Doug Parker, Dustin M. Eastway, Dylan Hunn, George Kalpakas, HyperLife1119, Jelle Bruisten, Jessica Janiuk, Joey Perrott, JoostK, Kristiyan Kostadinov, Markus Doggweiler, Paul Gschwendtner, Pei Wang, Pete Bacon Darwin and dario-piotrowicz