Road to Angular 10: Angular 9.1.0 has arrived with TypeScript 3.8 support

Updated 26 March, 2020

The speed of Angular releases is picking up! Just yesterday, we wrote about the third release candidate for Angular 9.1.0, and now the final version has arrived. Angular 9.1.0 adds new features including support for TypeScript 3.8, performance improvements, and a long list of bug fixes.

On the Angular Blog, Stephen Fluin shared the future plans for Angular:

This is the last planned minor release for 9.x. As we start work towards 10.0, you should expect to see 10.0 prereleases usually once per week, even though they will contain only minimal changes at first.

Here’s what’s new in the latest minor version:

Angular 9.1.0

Release Highlights

• TypeScript 3.8 update
• ngcc improvements
  • performance optimizations
  • concurrency & reliability improvements for monorepo use-cases (npm postinstall script no longer recommended)
• i18n now supports RTL locale info
• Ivy compatibility fixes

Features

• bazel: enable ivy template type-checking in g3 (#35672) (8f5b7f3)
• bazel: transform generated shims (in Ivy) with tsickle (#35975) (e3ecdc6), closes #35848
• compiler-cli: implement NgTscPlugin on top of the NgCompiler API (#34792) (3c69442dbd)
• compiler: Add sourceSpan and keySpan to TemplateBinding (#35897) (06779cf)
• compiler: Propagate source span and value span to Variable AST (#36047) (31bec8c)
• compiler: add dependency info and ng-content selectors to metadata (#35695) (fb70083)
• language-service: improve non-callable error message (#35271) (acc483e)
• language-service: modularize error messages (#35678) (47a1811), closes #32663
• ngcc: implement source-map flattening (#35132) (df816c9)
• ngcc: pause async ngcc processing if another process has the lockfile (#35131) (eef0753)
• ngcc: support invalidating the entry-point manifest (#35931) (8ea61a1)
• zone.js add a temp solution to support passive event listeners. (#34503) (f9d483e)
• zone.js add an tickOptions parameter with property processNewMacroTasksSynchronously. (#33838) (17b862c), closes #33799
• zone.js add interface definitions which zone extends EventTarget (#35304) (4acb676), closes #35173
• zone.js support passive event options by defining global variables in zone.js config file (#34503) (d7d359e)
• define all zone.js configurations to typescript interfaces (#35329) (03d88c7)
• typescript 3.8 support (#35864) (95c729f)

Performance Improvements

• core: add micro benchmark for destroy hook invocation (#35784) (0653db1)
• core: adding micro benchmark for host bindings (#35705) (8fed1fe), closes #35568
• core: avoid recursive scope recalculation when TestBed.overrideModule is used (#35454) (0a1a989)
• core: use multiple directives in host bindings micro benchmark (#35736) (5bc39f8)
• ivy: remove unused event argument in listener instructions (#35097) (9228d7f)
• ngcc: link segment markers for faster traversal (#36027) (47025e0)
• ngcc: only create tasks for non-processed formats (#35719) (d7efc45)
• ngcc: reduce directory traversing (#35756) (e0a35e1), closes #35717
• ngcc: spawn workers lazily (#35719) (dc40a93), closes #35717
• ngcc: store the position of SegmentMarkers to avoid unnecessary computation (#36027) (772bb5e)
• ngcc: use binary search when flattening mappings (#36027) (348ff0c)
• ngcc: use line start positions for computing offsets in source-map flattening (#36027) (e890082)
• ngcc: use the EntryPointManifest in DirectoryWalkerEntryPointFinder (#35931) (ec9f4d5)

Bug Fixes

• animations: Remove ɵAnimationDriver from private exports (#35690) (ec789b0)
• animations: allow computeStyle to work on elements created in Node (#35810) (17cf04e)
• animations: false positive when detecting Node in Webpack builds (#35134) (dc4ae4b), closes #35117
• animations: process shorthand margin and padding styles correctly (#35701) (35c9f0d), closes #35463
• bazel: devserver shows blank page in Windows (#35159) (727f92f)
• bazel: do not use manifest paths for generated imports within compilation unit (#35841) (9581658)
• bazel: ng_package rule creates incorrect UMD module exports (#35792) (5c2a908), closes angular/components#18652
• bazel: prod server doesn’t serve files in windows (#35991) (96e3449)
• bazel: spawn prod server using port 4200 (#35160) (829f506)
• bazel: update ibazel to 0.11.1 (#35158) (4e6d237)
• bazel: update several packages for better windows support (#35991) (32f099a)
• bazel: update typescript peer dependency range (#36013) (5e3a898)
• common: let KeyValuePipe accept type unions with null (#36093) (407fa42), closes #35743
• compiler-cli: TypeScript peer dependency range (#36008) (5f7d066)
• compiler-cli: suppress extraRequire errors in Closure Compiler (#35737) (c296bfc)
• compiler: Propagate value span of ExpressionBinding to ParsedProperty (#36133) (2ce5fa3)
• compiler: do not recurse to find static symbols of same module (#35262) (e179c58)
• compiler: record correct end of expression (#34690) (df890d7), closes #33477
• compiler: report errors for missing binding names (#34595) (d13cab7)
• compiler: support directive inputs with interpolations on <ng-template>s (#35984) (79659ee), closes #35752
• compiler: support i18n attributes on <ng-template> tags (#35681) (40da51f)
• compiler: type-checking error for duplicate variables in templates (#35674) (2c41bb8), closes #35186
• compiler: use FatalDiagnosticError to generate better error messages (#35244) (646655d)
• core: Add style="{{exp}}" based interpolation (#34202) (2562a3b), closes #33575
• core: Remove debugger statement (#35763) (8f38eb7), closes #35470
• core: Remove debugger statement when assert is thrown (#35763) (4003538), closes #35470
• core: add noSideEffects() to make*Decorator() functions (#35769) (dc6a791)
• core: add noSideEffects() to ɵɵdefineComponent() (#35769) (ba36127)
• core: add strictLiteralTypes to align core + VE checking of literals (#35462) (4253662)
• core: adhere to bootstrap options for JIT compiled components (#35534) (e342ffd), closes #35230
• core: allow null / undefined values in query results (#35796) (5652fb1), closes #35673
• core: better handing of ICUs outside of i18n blocks (#35347) (c013dd4)
• core: better inference for circularly referenced directive types (#35622) (173a1ac), closes #35372 #35603 #35522
• core: correctly concatenate static and dynamic binding to class when shadowed (#35350) (8c75f21), closes #35335
• core: don’t re-invoke pure pipes that throw and arguments are the same (#35827) (19cfaf7)
• core: emulate a View Engine type-checking bug with safe navigation (#35462) (a61fe41)
• core: error in AOT when pipe inherits constructor from injectable that uses DI (#35468) (e17bde9), closes #35277
• core: error when accessing NgModuleRef.componentFactoryResolver in constructor (#35637) (835618c), closes #35580
• core: handle <ng-template> with local refs in i18n blocks (#35758) (ef75875)
• core: incorrectly generating shared pure function between null and object literal (#35481) (22786c8), closes #33705 #35298
• core: injecting incorrect provider when re-providing injectable with useClass (#34574) (0bc35a7), closes #34110
• core: log error instead of warning for unknown properties and elements (#35798) (00f3c58), closes #35699
• core: make subclass inherit developer-defined data (#35105) (a756161)
• core: provide a more detailed error message for NG6002/NG6003 (#35620) (2d89b5d)
• core: remove side effects from ɵɵNgOnChangesFeature() (#35769) (9cf85d2)
• core: remove side effects from ɵɵgetInheritedFactory() (#35769) (c195d22)
• core: remove support for Map/Set in [class]/[style] bindings (#35392) (2ca7984)
• core: support sanitizer value in the [style] bindings (#35564) (3af103a), closes #35476
• core: treat [class] and [className] as unrelated bindings (#35668) (a153b61), closes #35577
• core: unable to NgModuleRef.injector in module constructor (#35731) (1f8a243), closes #35677 #35639
• core: undecorated-classes-with-di migration should handle libraries generated with CLI versions past v6.2.0 (#35824) (59607dc), closes #34985
• core: use proper configuration to compile Injectable in JIT (#35706) (7b13977)
• core: verify parsed ICU expression at runtime before executing it (#35923) (8c2d842), closes #35689
• core: workaround Terser inlining bug (#36200) (f71d132)
• elements: correctly handle setting inputs to undefined (#36140) (e066bdd)
• elements: correctly set SimpleChange#firstChange for pre-existing inputs (#36140) (447a600), closes #36130
• elements: schematics fail with schema.json not found error (#35211) (94d002b), closes #35154
• forms: change Array.reduce usage to Array.forEach (#35349) (554c2cb)
• ivy: LFrame needs to release memory on leaveView() (#35156) (b9b512f), closes #35148
• ivy: add attributes and classes to host elements based on selector (#34481) (f95b8ce)
• ivy: ensure module imports are instantiated before the module being declared (#35172) (b6a3a73)
• ivy: error if directive with synthetic property binding is on same node as directive that injects ViewContainerRef (#35343) (d6bc63f), closes #35342
• ivy: narrow NgIf context variables in template type checker (#35125) (40039d8), closes #34572
• ivy: queries should match elements inside ng-container with the descendants: false option (#35384) (3f4e02b), closes #34768
• ivy: repeat template guards to narrow types in event handlers (#35193) (dea1b96), closes #35073
• ivy: set namespace for host elements of dynamically created components (#35136) (480a4c3)
• ivy: support dynamic query tokens in AOT mode (#35307) (3e3a1ef), closes #34267
• ivy: wrong context passed to ngOnDestroy when resolved multiple times (#35249) (5fbfe69), closes #35167
• language-service: Suggest ? and ! operator on nullable receiver (#35200) (3cc24a9)
• language-service: fix calculation of pipe spans (#35986) (406419b)
• language-service: get the right ‘ElementAst’ in the nested HTML tag (#35317) (8e354da)
• language-service: infer $implicit value for ngIf template contexts (#35941) (18b1bd4)
• language-service: infer context type of structural directives (#35537) (#35561) (54fd33f)
• language-service: provide completions for the structural directive that only injects the ‘ViewContainerRef’ (#35466) (66c06eb)
• language-service: provide hover for interpolation in attribute value (#35494) (049f118), closes PR#34847
• language-service: resolve the real path for symlink (#35895) (4e1d780)
• language-service: resolve the variable from the template context first (#35982) (3d46a45)
• localize: allow ICU expansion case to start with any character except } (#36123) (0767d37), closes #31586
• localize: improve matching and parsing of XLIFF 1.2 translation files (#35793) (350ac11)
• localize: improve matching and parsing of XLIFF 2.0 translation files (#35793) (08071e5)
• localize: improve matching and parsing of XTB translation files (#35793) (0e2a577)
• localize: improve placeholder mismatch error message (#35593) (53f059e)
• localize: merge translation from all XLIFF <file> elements (#35936) (fc4c3c3), closes #35839
• localize: show helpful error when providing an invalid cli option (#36010) (aad02e8)
• localize: support minified ES5 $localize calls (#35562) (df75451), closes #35376
• ngcc: add default config for angular2-highcharts (#35527) (3cc8127), closes #35399
• ngcc: allow deep-import warnings to be ignored (#35683) (20b0c80), closes #35615
• ngcc: capture path-mapped entry-points that start with same string (#35592) (71b5970), closes #35536
• ngcc: consistently delegate to TypeScript host for typing files (#36089) (9e70bcb), closes #35078
• ngcc: correctly detect emitted TS helpers in ES5 (#35191) (bd6a39c)
• ngcc: correctly detect outer aliased class identifiers in ES5 (#35527) (fde8915), closes #35399
• ngcc: do not crash on entry-point that fails to compile (#36083) (ff665b9)
• ngcc: do not crash on overlapping entry-points (#36083) (c9f554c)
• ngcc: ensure that path-mapped secondary entry-points are processed correctly (#35227) (c3c1140), closes #35188
• ngcc: handle imports in dts files when processing CommonJS (#35191) (b6e8847), closes #34356
• ngcc: handle mappings outside the content when flattening source-maps (#35718) (73cf7d5), closes #35709
• ngcc: handle missing sources when flattening source-maps (#35718) (72c4fda), closes #35709
• ngcc: handle multiple original sources when flattening source-maps (#36027) (a40be00)
• ngcc: introduce a new LockFile implementation that uses a child-process (#35861) (c55f900), closes #35761
• ngcc: show helpful error when providing an invalid option (#36010) (1f89c61)
• ngcc: use path-mappings from tsconfig in dependency resolution (#36180) (6defe96), closes #36119
• ngcc: use preserve whitespaces from tsconfig if provided (#36189) (aef4323), closes #35871
• platform-browser: add missing peerDependency on [@angular](https://github.com/angular)/animations (#35949) (64d6f13), closes #35888
• router: removed unused ApplicationRef dependency (#35642) (c839c05), closes /github.com/angular/angular/commit/5a849829c42330d7e88e83e916e6e36380c97a97#diff-c0baae5e1df628e1a217e8dc38557
• router: state data missing in routerLink (#33203) (de67978)
• service-worker: treat 503 as offline (#35595) (96cdf03), closes #35571
• fix flaky test cases of passive events (#35679) (8ef29b6)

Updated 25 March, 2020

Three new release candidates for Angular 9.1.0 have arrived. These release candidates mostly fix some bugs, preparing for the update.

9.1.0-rc.2 includes a new feature for the compiler and adds dependency info and ng-content selectors to metadata. From the pull request:

This commit augments the FactoryDef declaration of Angular decorated classes to contain information about the parameter decorators used in the constructor. If no constructor is present, or none of the parameters have any Angular decorators, then this will be represented using the null type. Otherwise, a tuple type is used where the entry at index i corresponds with parameter i.

9.1.0-rc.0 updates TypeScript to version 3.8 and fixes some issues with Ivy compatibility. It also optimizes ngcc performance and reliability and i18n now supports RTL locale info.

From the changelog, below are all the new bug fixes that 9.1.0-rc.2, rc.1, and rc.0 include:

• common: let KeyValuePipe accept type unions with null (#36093) (407fa42), closes #35743
• elements: correctly handle setting inputs to undefined (#36140) (e066bdd)
• elements: correctly set SimpleChange#firstChange for pre-existing inputs (#36140) (447a600), closes #36130
• ngcc: use path-mappings from tsconfig in dependency resolution (#36180) (6defe96), closes #36119
• ngcc: use preserve whitespaces from tsconfig if provided (#36189) (aef4323), closes #35871
• compiler: record correct end of expression (#34690) (df890d7), closes #33477
• core: workaround Terser inlining bug (#36200) (f71d132)
• localize: allow ICU expansion case to start with any character except } (#36123) (0767d37), closes #31586
• compiler: Propagate value span of ExpressionBinding to ParsedProperty (#36133) (2ce5fa3)
• core: adhere to bootstrap options for JIT compiled components (#35534) (e342ffd), closes #35230
• ngcc: do not crash on entry-point that fails to compile (#36083) (ff665b9)
• ngcc: do not crash on overlapping entry-points (#36083) (c9f554c)

Updated 19 March, 2020

No rest for Angular. One week after the most recent update, Angular 9.1.0-next.5 is here.

Between all of the usual bug fixes, this update also increases performance and speed with some new tweaks. Source map flattening has been sped up (see the original pull request) and modifies the `generatedSegment` properties in mappings so that they link directly to the following segment. The position of SegmentMarkers will also now be stored in order to avoid further unnecessary computation.

The previously time-consuming task of the DirectoryWalkerEntryPointFinder traversing the entire node_modules library has also been changed to save time. It now stores and re-uses the path to entry-points.

From the changelog, here’s the full list:

Bug Fixes

• bazel: prod server doesn’t serve files in windows (#35991) (96e3449)
• bazel: update several packages for better windows support (#35991) (32f099a)
• bazel: update typescript peer dependency range (#36013) (5e3a898)
• compiler: do not recurse to find static symbols of same module (#35262) (e179c58)
• compiler: support directive inputs with interpolations on <ng-template>s (#35984) (79659ee), closes #35752
• compiler-cli: TypeScript peer dependency range (#36008) (5f7d066)
• core: don’t re-invoke pure pipes that throw and arguments are the same (#35827) (19cfaf7)
• core: verify parsed ICU expression at runtime before executing it (#35923) (8c2d842), closes #35689
• language-service: infer $implicit value for ngIf template contexts (#35941) (18b1bd4)
• localize: show helpful error when providing an invalid cli option (#36010) (aad02e8)
• ngcc: consistently delegate to TypeScript host for typing files (#36089) (9e70bcb), closes #35078
• ngcc: handle multiple original sources when flattening source-maps (#36027) (a40be00)
• ngcc: show helpful error when providing an invalid option (#36010) (1f89c61)

Features

• bazel: transform generated shims (in Ivy) with tsickle (#35975) (e3ecdc6), closes #35848
• compiler: Add sourceSpan and keySpan to TemplateBinding (#35897) (06779cf)
• compiler: Propagate source span and value span to Variable AST (#36047) (31bec8c)
• language-service: improve non-callable error message (#35271) (acc483e)
• ngcc: support invalidating the entry-point manifest (#35931) (8ea61a1)

Performance Improvements

• ngcc: link segment markers for faster traversal (#36027) (47025e0)
• ngcc: store the position of SegmentMarkers to avoid unnecessary computation (#36027) (772bb5e)
• ngcc: use binary search when flattening mappings (#36027) (348ff0c)
• ngcc: use line start positions for computing offsets in source-map flattening (#36027) (e890082)
• ngcc: use the EntryPointManifest in DirectoryWalkerEntryPointFinder (#35931) (ec9f4d5)

Updated 11 March, 2020

Just days after Angular 9.1.0-next.3, Angular updated with 9.1.0-next.4. This update mostly focuses on fixes bugs, providing a more stable release. Included in the bug fixes is a new LockFile implementation, using a child-process and some issues with fixed flaky test cases.

In addition, TypeScript 3.8 is now supported. This is currently the latest edition of TypeScript, so be sure to check out what new breaking changes and improvements it adds. Among the list of new features, TypeScript 3.8 includes support for ECMAScript private fields, type-only imports and exports, and top-level await.

9.1.0-next.4 reduces directory traversing, which will reduce the amount of time that findEntryPoints takes 9701.143ms to 4177.278ms.

Here are all the changes in this edition:

Bug Fixes

• bazel: do not use manifest paths for generated imports within compilation unit (#35841) (9581658)
• core: undecorated-classes-with-di migration should handle libraries generated with CLI versions past v6.2.0 (#35824) (59607dc), closes #34985
• language-service: fix calculation of pipe spans (#35986) (406419b)
• language-service: resolve the real path for symlink (#35895) (4e1d780)
• language-service: resolve the variable from the template context first (#35982) (3d46a45)
• localize: improve matching and parsing of XLIFF 1.2 translation files (#35793) (350ac11)
• fix flaky test cases of passive events (#35679) (8ef29b6)
• localize: improve matching and parsing of XLIFF 2.0 translation files (#35793) (08071e5)
• localize: improve matching and parsing of XTB translation files (#35793) (0e2a577)
• localize: merge translation from all XLIFF <file> elements (#35936) (fc4c3c3), closes #35839
• ngcc: introduce a new LockFile implementation that uses a child-process (#35861) (c55f900), closes #35761
• platform-browser: add missing peerDependency on [@angular](https://github.com/angular)/animations (#35949) (64d6f13), closes #35888
• router: state data missing in routerLink (#33203) (de67978)

Features

• typescript 3.8 support (#35864) (95c729f)

Performance Improvements

• ngcc: reduce directory traversing (#35756) (e0a35e1), closes #35717

Updated 9 March, 2020

Hot on the heels of the most recent update comes Angular 9.1.0-next.3. This update includes a long list of bug fixes and performance improvements. Among these improvements includes added micro benchmarks for both destroy hook invocation and host bindings. This improvement closes several pull requests on the topic.

Meanwhile, two new features have been added. Modularization of the Language Service’s diagnostic messages will help centralize error messages and prepares Angular for potential additional features such as annotating diagnostics. (View the original pull request for more information.) In addition to this, now Angular adds zone configuration to TypeScript interfaces.

Let’s have a look at all the newest bug fixes in this release:

Angular 9.1.0-next.3

Bug Fixes

• animations: allow computeStyle to work on elements created in Node (#35810) (17cf04e)
• animations: process shorthand margin and padding styles correctly (#35701) (35c9f0d), closes #35463
• bazel: ng_package rule creates incorrect UMD module exports (#35792) (5c2a908), closes angular/components#18652
• compiler: support i18n attributes on <ng-template> tags (#35681) (40da51f)
• compiler: type-checking error for duplicate variables in templates (#35674) (2c41bb8), closes #35186
• compiler-cli: suppress extraRequire errors in Closure Compiler (#35737) (c296bfc)
• core: add noSideEffects() to make*Decorator() functions (#35769) (dc6a791)
• core: add noSideEffects() to ɵɵdefineComponent() (#35769) (ba36127)
• core: allow null / undefined values in query results (#35796) (5652fb1), closes #35673
• core: handle <ng-template> with local refs in i18n blocks (#35758) (ef75875)
• core: log error instead of warning for unknown properties and elements (#35798) (00f3c58), closes #35699
• core: Remove debugger statement (#35763) (8f38eb7), closes #35470
• core: Remove debugger statement when assert is thrown (#35763) (4003538), closes #35470
• core: remove side effects from ɵɵgetInheritedFactory() (#35769) (c195d22)
• core: remove side effects from ɵɵNgOnChangesFeature() (#35769) (9cf85d2)
• core: treat [class] and [className] as unrelated bindings (#35668) (a153b61), closes #35577
• core: unable to NgModuleRef.injector in module constructor (#35731) (1f8a243), closes #35677 #35639
• core: use proper configuration to compile Injectable in JIT (#35706) (7b13977)
• ivy: narrow NgIf context variables in template type checker (#35125) (40039d8), closes #34572
• ivy: support dynamic query tokens in AOT mode (#35307) (3e3a1ef), closes #34267
• ngcc: allow deep-import warnings to be ignored (#35683) (20b0c80), closes #35615
• ngcc: handle mappings outside the content when flattening source-maps (#35718) (73cf7d5), closes #35709
• ngcc: handle missing sources when flattening source-maps (#35718) (72c4fda), closes #35709

Features

• language-service: modularize error messages (#35678) (47a1811), closes #32663
• define all zone.js configurations to typescript interfaces (#35329) (03d88c7)

Performance Improvements

• core: add micro benchmark for destroy hook invocation (#35784) (0653db1)
• core: adding micro benchmark for host bindings (#35705) (8fed1fe), closes #35568
• core: use multiple directives in host bindings micro benchmark (#35736) (5bc39f8)
• ngcc: only create tasks for non-processed formats (#35719) (d7efc45)
• ngcc: spawn workers lazily (#35719) (dc40a93), closes #35717

Updated 2 March, 2020

Angular 10 is scheduled to arrive in May 2020. On the way to the new major version, Angular 9.1.0-next.2 has been released. This beta adds several bug fixes for different areas, including animations, core, language-service and ngcc. For example, in animations, a false positive is no longer returned when detecting Node in Webpack builds and the ɵAnimationDriver has been removed from private exports.

New features have been added for ngcc, bazel and zone.js, whereas the core and Ivy have received performance improvements. Take a look at all that has happened in the beta release as well as in the two previous betas:

Angular 9.1.0-next.2

Bug Fixes

• animations: false positive when detecting Node in Webpack builds (#35134) (dc4ae4b), closes #35117
• animations: Remove ɵAnimationDriver from private exports (#35690) (ec789b0)
• compiler: use FatalDiagnosticError to generate better error messages (#35244) (646655d)
• core: make subclass inherit developer-defined data (#35105) (a756161)
• core: support sanitizer value in the [style] bindings (#35564) (3af103a), closes #35476
• core: Add style="{{exp}}" based interpolation (#34202) (2562a3b), closes #33575
• core: add strictLiteralTypes to align core + VE checking of literals (#35462) (4253662)
• core: better inference for circularly referenced directive types (#35622) (173a1ac), closes #35372 #35603 #35522
• core: emulate a View Engine type-checking bug with safe navigation (#35462) (a61fe41)
• core: error in AOT when pipe inherits constructor from injectable that uses DI (#35468) (e17bde9), closes #35277
• core: error when accessing NgModuleRef.componentFactoryResolver in constructor (#35637) (835618c), closes #35580
• core: incorrectly generating shared pure function between null and object literal (#35481) (22786c8), closes #33705 #35298
• core: injecting incorrect provider when re-providing injectable with useClass (#34574) (0bc35a7), closes #34110
• core: provide a more detailed error message for NG6002/NG6003 (#35620) (2d89b5d)
• language-service: get the right ‘ElementAst’ in the nested HTML tag (#35317) (8e354da)
• language-service: infer context type of structural directives (#35537) (#35561) (54fd33f)
• language-service: provide completions for the structural directive that only injects the ‘ViewContainerRef’ (#35466) (66c06eb)
• language-service: provide hover for interpolation in attribute value (#35494) (049f118), closes PR#34847
• localize: improve placeholder mismatch error message (#35593) (53f059e)
• localize: support minified ES5 $localize calls (#35562) (df75451), closes #35376
• ngcc: add default config for angular2-highcharts (#35527) (3cc8127), closes #35399
• ngcc: capture path-mapped entry-points that start with same string (#35592) (71b5970), closes #35536
• ngcc: correctly detect emitted TS helpers in ES5 (#35191) (bd6a39c)
• ngcc: correctly detect outer aliased class identifiers in ES5 (#35527) (fde8915), closes #35399
• ngcc: handle imports in dts files when processing CommonJS (#35191) (b6e8847), closes #34356
• router: removed unused ApplicationRef dependency (#35642) (c839c05), closes /github.com/angular/angular/commit/5a849829c42330d7e88e83e916e6e36380c97a97#diff-c0baae5e1df628e1a217e8dc38557
• service-worker: treat 503 as offline (#35595) (96cdf03), closes #35571

Features

• ngcc: implement source-map flattening (#35132) (df816c9)
• bazel: enable ivy template type-checking in g3 (#35672) (8f5b7f3)
• zone.js add interface definitions which zone extends EventTarget (#35304) (4acb676), closes #35173
• zone.js add a temp solution to support passive event listeners. (#34503) (f9d483e)
• zone.js add an tickOptions parameter with property processNewMacroTasksSynchronously. (#33838) (17b862c), closes #33799
• zone.js support passive event options by defining global variables in zone.js config file (#34503) (d7d359e)

Performance Improvements

• core: avoid recursive scope recalculation when TestBed.overrideModule is used (#35454) (0a1a989)
• ivy: remove unused event argument in listener instructions (#35097) (9228d7f)

Angular 9.1.0-next.1

Bug Fixes

• core: better handing of ICUs outside of i18n blocks (#35347) (c013dd4)
• core: correctly concatenate static and dynamic binding to class when shadowed (#35350) (8c75f21), closes #35335
• core: remove support for Map/Set in [class]/[style] bindings (#35392) (2ca7984)
• ivy: LFrame needs to release memory on leaveView() (#35156) (b9b512f), closes #35148
• ivy: add attributes and classes to host elements based on selector (#34481) (f95b8ce)
• ivy: error if directive with synthetic property binding is on same node as directive that injects ViewContainerRef (#35343) (d6bc63f), closes #35342
• ivy: queries should match elements inside ng-container with the descendants: false option (#35384) (3f4e02b), closes #34768
• ivy: wrong context passed to ngOnDestroy when resolved multiple times (#35249) (5fbfe69), closes #35167

Features

• ngcc: pause async ngcc processing if another process has the lockfile (#35131) (eef0753)

Angular 9.1.0-next.0

Bug Fixes

• bazel: devserver shows blank page in Windows (#35159) (727f92f)
• bazel: spawn prod server using port 4200 (#35160) (829f506)
• bazel: update ibazel to 0.11.1 (#35158) (4e6d237)
• compiler: report errors for missing binding names (#34595) (d13cab7)
• elements: schematics fail with schema.json not found error (#35211) (94d002b), closes #35154
• forms: change Array.reduce usage to Array.forEach (#35349) (554c2cb)
• ivy: ensure module imports are instantiated before the module being declared (#35172) (b6a3a73)
• ivy: repeat template guards to narrow types in event handlers (#35193) (dea1b96), closes #35073
• ivy: set namespace for host elements of dynamically created components (#35136) (480a4c3)
• language-service: Suggest ? and ! operator on nullable receiver (#35200) (3cc24a9)
• ngcc: ensure that path-mapped secondary entry-points are processed correctly (#35227) (c3c1140), closes #35188

Features

• compiler-cli: implement NgTscPlugin on top of the NgCompiler API (#34792) (3c69442dbd)