fix(core): input coercion (#42803)

BREAKING CHANGE: Forms [email] input coercion

Forms [email] input value will be considered as true if it is defined with any value rather
than false and 'false'.

PR Close #42803

packages/core/src/application_init.ts

@@ -7,6 +7,7 @@
  */
 
 import {Observable} from 'rxjs';
+
 import {Inject, Injectable, InjectionToken, Optional} from './di';
 import {isObservable, isPromise} from './util/lang';
 import {noop} from './util/noop';

packages/core/src/change_detection/change_detection.ts

@@ -15,8 +15,7 @@ export {SimpleChange, SimpleChanges} from '../interface/simple_change';
 export {devModeEqual} from './change_detection_util';
 export {ChangeDetectorRef} from './change_detector_ref';
 export {ChangeDetectionStrategy, ChangeDetectorStatus, isDefaultChangeDetectionStrategy} from './constants';
-export {DefaultIterableDifferFactory} from './differs/default_iterable_differ';
-export {DefaultIterableDiffer} from './differs/default_iterable_differ';
+export {DefaultIterableDiffer, DefaultIterableDifferFactory} from './differs/default_iterable_differ';
 export {DefaultKeyValueDifferFactory} from './differs/default_keyvalue_differ';
 export {IterableChangeRecord, IterableChanges, IterableDiffer, IterableDifferFactory, IterableDiffers, NgIterable, TrackByFunction} from './differs/iterable_differs';
 export {KeyValueChangeRecord, KeyValueChanges, KeyValueDiffer, KeyValueDifferFactory, KeyValueDiffers} from './differs/keyvalue_differs';

packages/core/src/core_private_export.ts

@@ -26,6 +26,7 @@ export {GetterFn as ɵGetterFn, MethodFn as ɵMethodFn, SetterFn as ɵSetterFn}
 export {allowSanitizationBypassAndThrow as ɵallowSanitizationBypassAndThrow, BypassType as ɵBypassType, getSanitizationBypassType as ɵgetSanitizationBypassType, SafeHtml as ɵSafeHtml, SafeResourceUrl as ɵSafeResourceUrl, SafeScript as ɵSafeScript, SafeStyle as ɵSafeStyle, SafeUrl as ɵSafeUrl, SafeValue as ɵSafeValue, unwrapSafeValue as ɵunwrapSafeValue} from './sanitization/bypass';
 export {_sanitizeHtml as ɵ_sanitizeHtml} from './sanitization/html_sanitizer';
 export {_sanitizeUrl as ɵ_sanitizeUrl} from './sanitization/url_sanitizer';
+export {coerceToBoolean as ɵcoerceToBoolean} from './util/coercion';
 export {makeDecorator as ɵmakeDecorator} from './util/decorators';
 export {global as ɵglobal} from './util/global';
 export {isObservable as ɵisObservable, isPromise as ɵisPromise, isSubscribable as ɵisSubscribable} from './util/lang';

packages/core/src/reflection/reflector.ts

@@ -7,11 +7,11 @@
  */
 
 import {Type} from '../interface/type';
+
 import {PlatformReflectionCapabilities} from './platform_reflection_capabilities';
 import {GetterFn, MethodFn, SetterFn} from './types';
 
-export {PlatformReflectionCapabilities};
-export {GetterFn, MethodFn, SetterFn};
+export {GetterFn, MethodFn, PlatformReflectionCapabilities, SetterFn};
 
 /**
  * Provides access to reflection data about symbols. Used internally by Angular

packages/core/src/render3/context_discovery.ts

@@ -8,8 +8,8 @@
 import '../util/ng_dev_mode';
 
 import {assertDefined, assertDomNode} from '../util/assert';
-
 import {EMPTY_ARRAY} from '../util/empty';
+
 import {LContext} from './interfaces/context';
 import {TNode, TNodeFlags} from './interfaces/node';
 import {RElement, RNode} from './interfaces/renderer_dom';

packages/core/src/util/coercion.ts

@@ -0,0 +1,12 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+/** Coerces a value (typically a string) to a boolean. */
+export function coerceToBoolean(value: unknown): boolean {
+  return typeof value === 'boolean' ? value : (value != null && value !== 'false');
+}