@angular/core
Version:
Angular - the core framework
66 lines • 6.3 kB
JavaScript
/**
* @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
*/
import { PLATFORM_ID } from '../../application/application_tokens';
import { Injector } from '../../di';
import { inject } from '../../di/injector_compatibility';
/**
*
* @codeGenApi
*/
export function ɵɵresolveWindow(element) {
return element.ownerDocument.defaultView;
}
/**
*
* @codeGenApi
*/
export function ɵɵresolveDocument(element) {
return element.ownerDocument;
}
/**
*
* @codeGenApi
*/
export function ɵɵresolveBody(element) {
return element.ownerDocument.body;
}
/**
* The special delimiter we use to separate property names, prefixes, and suffixes
* in property binding metadata. See storeBindingMetadata().
*
* We intentionally use the Unicode "REPLACEMENT CHARACTER" (U+FFFD) as a delimiter
* because it is a very uncommon character that is unlikely to be part of a user's
* property names or interpolation strings. If it is in fact used in a property
* binding, DebugElement.properties will not return the correct value for that
* binding. However, there should be no runtime effect for real applications.
*
* This character is typically rendered as a question mark inside of a diamond.
* See https://en.wikipedia.org/wiki/Specials_(Unicode_block)
*
*/
export const INTERPOLATION_DELIMITER = `�`;
/**
* Unwrap a value which might be behind a closure (for forward declaration reasons).
*/
export function maybeUnwrapFn(value) {
if (value instanceof Function) {
return value();
}
else {
return value;
}
}
/**
* Detects whether the code is invoked in a browser.
* Later on, this check should be replaced with a tree-shakable
* flag (e.g. `!isServer`).
*/
export function isPlatformBrowser(injector) {
return (injector ?? inject(Injector)).get(PLATFORM_ID) === 'browser';
}
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