ngx-webstorage
Version:
### Local and session storage - Angular service This library provides an easy to use service to manage the web storages (local and session) from your Angular application. It provides also two decorators to synchronize the component attributes and the web
30 lines • 5.29 kB
JavaScript
import { noop } from '../../helpers/noop';
import { StorageKeyManager } from '../../helpers/storageKeyManager';
import { distinctUntilChanged, filter, shareReplay, switchMap } from 'rxjs/operators';
class SyncStorage {
constructor(strategy) {
this.strategy = strategy;
}
retrieve(key) {
let value;
this.strategy.get(StorageKeyManager.normalize(key)).subscribe((result) => value = typeof result === 'undefined' ? null : result);
return value;
}
store(key, value) {
this.strategy.set(StorageKeyManager.normalize(key), value).subscribe(noop);
return value;
}
clear(key) {
if (key !== undefined)
this.strategy.del(StorageKeyManager.normalize(key)).subscribe(noop);
else
this.strategy.clear().subscribe(noop);
}
getStrategyName() { return this.strategy.name; }
observe(key) {
key = StorageKeyManager.normalize(key);
return this.strategy.keyChanges.pipe(filter((changed) => changed === null || changed === key), switchMap(() => this.strategy.get(key)), distinctUntilChanged(), shareReplay({ refCount: true, bufferSize: 1 }));
}
}
export { SyncStorage };
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