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feat(ivy): make Hammer support tree-shakable (#32203)

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Currently, it's not possible to tree-shake away the
coordination layer between HammerJS and Angular's
EventManager. This means that you get the HammerJS
support code in your production bundle whether or
not you actually use the library.

This commit removes the Hammer providers from the
default platform_browser providers list and instead
provides them as part of a `HammerModule`. Apps on
Ivy just need to import the `HammerModule` at root
to turn on Hammer support. Otherwise all Hammer code
will tree-shake away. View Engine apps will require
no change.

BREAKING CHANGE

Previously, in Ivy applications, Hammer providers
were included by default. With this commit, apps
that want Hammer support must import `HammerModule`
in their root module.

PR Close #32203
This commit is contained in:
Kara Erickson
2019-08-19 20:00:26 -07:00
committed by Andrew Kushnir
parent 0287b234ea
commit de8ebbdfd0
6 changed files with 193 additions and 14 deletions
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2
packages/platform-browser/src/platform-browser.ts
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@ -13,7 +13,7 @@ export {disableDebugTools, enableDebugTools} from './browser/tools/tools';
export {BrowserTransferStateModule, StateKey, TransferState, makeStateKey} from './browser/transfer_state';
export {By} from './dom/debug/by';
export {EVENT_MANAGER_PLUGINS, EventManager} from './dom/events/event_manager';
export {HAMMER_GESTURE_CONFIG, HAMMER_LOADER, HammerGestureConfig, HammerLoader} from './dom/events/hammer_gestures';
export {HAMMER_GESTURE_CONFIG, HAMMER_LOADER, HAMMER_PROVIDERS__POST_R3__ as ɵHAMMER_PROVIDERS__POST_R3__, HammerGestureConfig, HammerLoader, HammerModule} from './dom/events/hammer_gestures';
export {DomSanitizer, SafeHtml, SafeResourceUrl, SafeScript, SafeStyle, SafeUrl, SafeValue} from './security/dom_sanitization_service';
export * from './private_export';