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feat(core): Set default Component changeDetection strategy to OnPush · angular/angular@c6d76e2 · GitHub

feat(core): Set default Component changeDetection strategy to OnPush · angular/angular@c6d76e2 · GitHub
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Commit c6d76e2

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JeanMeche
committed
feat(core): Set default Component changeDetection strategy to OnPush
The default change detection strategy is now OnPush. BREAKING CHANGE: Component with undefined `changeDetection` property are now `OnPush` by default. Specify `changeDetection: ChangeDetectionStrategy.Eager` to keep the previous behavior.
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122 files changed

Lines changed: 5304 additions & 269 deletions

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‎devtools/cypress/integration/view-component-metadata.e2e.js‎

Lines changed: 2 additions & 2 deletions
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@@ -26,7 +26,7 @@ describe('Viewing component metadata', () => {
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});
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it('should display change detection strategy', () => {
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cy.contains('ng-component-metadata', 'Change Detection Strategy: Default');
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cy.contains('ng-component-metadata', 'Change Detection Strategy: OnPush');
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});
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});
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@@ -40,7 +40,7 @@ describe('Viewing component metadata', () => {
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});
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it('should display change detection strategy', () => {
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cy.contains('ng-component-metadata', 'Change Detection Strategy: Default');
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cy.contains('ng-component-metadata', 'Change Detection Strategy: OnPush');
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});
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it('should display correct set of inputs', () => {

‎devtools/projects/ng-devtools/src/lib/devtools-tabs/directive-explorer/property-pane/property-pane-header/component-metadata/component-metadata.component.ts‎

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@@ -16,13 +16,13 @@ import {
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} from '@angular/core';
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import {
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AngularDirectiveMetadata,
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AcxDirectiveMetadata,
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AngularDirectiveMetadata,
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ComponentType,
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} from '../../../../../../../../protocol';
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import {ElementPropertyResolver} from '../../../property-resolver/element-property-resolver';
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import {DocsRefButtonComponent} from '../../../../../shared/docs-ref-button/docs-ref-button.component';
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import {ElementPropertyResolver} from '../../../property-resolver/element-property-resolver';
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@Component({
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selector: 'ng-component-metadata',
@@ -77,7 +77,7 @@ export class ComponentMetadataComponent {
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const meta = metadata as Partial<AcxDirectiveMetadata | AngularDirectiveMetadata>;
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if (meta.onPush !== undefined) {
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return meta.onPush ? 'OnPush' : 'Default';
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return meta.onPush ? 'OnPush' : 'Eager';
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} else {
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return undefined;
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}

‎integration/cli-signal-inputs/src/app/greet.component.spec.ts‎

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Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
1-
import {Component} from '@angular/core';
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import {ChangeDetectionStrategy, Component} from '@angular/core';
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import {TestBed} from '@angular/core/testing';
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import {GreetComponent} from './greet.component';
@@ -38,6 +38,7 @@ describe('greet component', () => {
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/>
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`,
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imports: [GreetComponent],
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changeDetection: ChangeDetectionStrategy.Eager,
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})
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class TestCmp {
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clickCount = 0;

‎integration/platform-server/projects/ngmodule/src/app/app.component.ts‎

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Original file line numberDiff line numberDiff line change
@@ -1,8 +1,9 @@
1-
import {Component} from '@angular/core';
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import {ChangeDetectionStrategy, Component} from '@angular/core';
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@Component({
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selector: 'app-root',
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template: '<router-outlet></router-outlet>',
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standalone: false,
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changeDetection: ChangeDetectionStrategy.Eager,
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})
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export class AppComponent {}

‎integration/platform-server/projects/ngmodule/src/app/http-transferstate-lazy-on-init/http-transferstate-lazy-on-init.component.ts‎

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@@ -7,12 +7,13 @@
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*/
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import {HttpClient} from '@angular/common/http';
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import {Component, OnInit} from '@angular/core';
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import {ChangeDetectionStrategy, Component, OnInit} from '@angular/core';
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@Component({
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selector: 'transfer-state-http-on-init',
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template: ` <div class="one">{{ responseOne }}</div> `,
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standalone: false,
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changeDetection: ChangeDetectionStrategy.Eager,
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})
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export class TransferStateComponentOnInit implements OnInit {
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responseOne: string = '';

‎integration/platform-server/projects/ngmodule/src/app/http-transferstate-lazy/http-transfer-state.component.ts‎

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@@ -7,7 +7,7 @@
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*/
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import {HttpClient} from '@angular/common/http';
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import {Component, OnInit} from '@angular/core';
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import {ChangeDetectionStrategy, Component, OnInit} from '@angular/core';
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@Component({
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selector: 'transfer-state-http',
@@ -16,6 +16,7 @@ import {Component, OnInit} from '@angular/core';
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<div class="two">{{ responseTwo }}</div>
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`,
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standalone: false,
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changeDetection: ChangeDetectionStrategy.Eager,
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})
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export class TransferStateComponent implements OnInit {
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responseOne: string = '';

‎integration/platform-server/projects/standalone/src/app/app.component.ts‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,11 +1,12 @@
1-
import {Component} from '@angular/core';
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import {CommonModule} from '@angular/common';
2+
import {ChangeDetectionStrategy, Component} from '@angular/core';
33
import {RouterOutlet} from '@angular/router';
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55
@Component({
66
selector: 'app-root',
77

88
imports: [CommonModule, RouterOutlet],
99
template: '<router-outlet></router-outlet>',
10+
changeDetection: ChangeDetectionStrategy.Eager,
1011
})
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export class AppComponent {}

‎integration/platform-server/projects/standalone/src/app/http-transferstate-lazy-on-init/http-transfer-state-on-init.component.ts‎

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Original file line numberDiff line numberDiff line change
@@ -7,13 +7,14 @@
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*/
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99
import {HttpClient} from '@angular/common/http';
10-
import {Component, OnInit} from '@angular/core';
10+
import {ChangeDetectionStrategy, Component, OnInit} from '@angular/core';
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1212
@Component({
1313
selector: 'transfer-state-http',
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standalone: true,
1515
template: ` <div class="one">{{ responseOne }}</div> `,
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providers: [HttpClient],
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changeDetection: ChangeDetectionStrategy.Eager,
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})
1819
export class TransferStateOnInitComponent implements OnInit {
1920
responseOne: string = '';

‎integration/platform-server/projects/standalone/src/app/http-transferstate-lazy/http-transfer-state.component.ts‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*/
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99
import {HttpClient} from '@angular/common/http';
10-
import {Component, OnInit} from '@angular/core';
10+
import {ChangeDetectionStrategy, Component, OnInit} from '@angular/core';
1111

1212
@Component({
1313
selector: 'transfer-state-http',
@@ -17,6 +17,7 @@ import {Component, OnInit} from '@angular/core';
1717
<div class="two">{{ responseTwo }}</div>
1818
`,
1919
providers: [HttpClient],
20+
changeDetection: ChangeDetectionStrategy.Eager,
2021
})
2122
export class TransferStateComponent implements OnInit {
2223
responseOne: string = '';

‎modules/benchmarks/src/change_detection/transplanted_views/transplanted_views.ts‎

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Original file line numberDiff line numberDiff line change
@@ -52,6 +52,7 @@ export class InsertionComponent {
5252
<insertion-component [template]="template" [viewCount]="viewCount"></insertion-component>
5353
`,
5454
standalone: false,
55+
changeDetection: ChangeDetectionStrategy.Eager,
5556
})
5657
export class DeclarationComponent {
5758
@Input() viewCount = 1;

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