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feat(bootstrap): add platform and app initializers

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Often some init logic needs to run when a platform or an application is boostrapped.
For example, boostraping a platform requires initializing the dom adapter.
Now, it can be done as follows:

new Provider(PLATFORM_INITIALIZER, {useValue: initDomAdapter, multi: true}),

All platform initializers will be run after the platform injector has been created.

Similarly, all application initializers will be run after the app injector has been
created.

Closes #5355
This commit is contained in:
vsavkin
2015-11-18 09:18:37 -08:00
committed by Victor Savkin
parent 3fa287aae2
commit 3c43a8c549
9 changed files with 80 additions and 19 deletions
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5
modules/angular2/platform/browser.ts
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@ -13,8 +13,7 @@ import {Type, isPresent, CONST_EXPR} from 'angular2/src/facade/lang';
import {Promise} from 'angular2/src/facade/promise';
import {
BROWSER_PROVIDERS,
BROWSER_APP_COMMON_PROVIDERS,
initDomAdapter
BROWSER_APP_COMMON_PROVIDERS
} from 'angular2/src/platform/browser_common';
import {COMPILER_PROVIDERS} from 'angular2/compiler';
import {ComponentRef, platform, reflector} from 'angular2/core';
@ -120,8 +119,6 @@ export function bootstrap(
appComponentType: Type,
customProviders?: Array<any /*Type | Provider | any[]*/>): Promise<ComponentRef> {
reflector.reflectionCapabilities = new ReflectionCapabilities();
initDomAdapter();
let appProviders =
isPresent(customProviders) ? [BROWSER_APP_PROVIDERS, customProviders] : BROWSER_APP_PROVIDERS;
return platform(BROWSER_PROVIDERS).application(appProviders).bootstrap(appComponentType);