@elemental-concept/rx-persist/fesm2020/elemental-concept-rx-persist.mjs.map

Persistence operator for RxJS

{"version":3,"file":"elemental-concept-rx-persist.mjs","sources":["../../../projects/lib/src/lib/storage/dom-storage-driver.ts","../../../projects/lib/src/lib/internal/storage-access.ts","../../../projects/lib/src/lib/internal/storage-access.mock.ts","../../../projects/lib/src/lib/operators/persistent.ts","../../../projects/lib/src/lib/operators/persistent-and-versioned.ts","../../../projects/lib/src/elemental-concept-rx-persist.ts"],"sourcesContent":["import { StorageDriver, StorageResult } from '../types';\r\n\r\nexport class DOMStorageDriver implements StorageDriver {\r\n  constructor(private readonly storage: Storage) {\r\n  }\r\n\r\n  get<T>(key: string): StorageResult<T | null> | T | null {\r\n    try {\r\n      const value = this.storage.getItem(key);\r\n\r\n      if (typeof value === 'string') {\r\n        return JSON.parse(value);\r\n      }\r\n\r\n    } catch (e) {\r\n    }\r\n\r\n    return null;\r\n  }\r\n\r\n  set<T, R>(key: string, value: T): void | StorageResult<R> {\r\n    this.storage.setItem(key, JSON.stringify(value));\r\n    return;\r\n  }\r\n\r\n  remove<R>(key: string): void | StorageResult<R> {\r\n    this.storage.removeItem(key);\r\n    return;\r\n  }\r\n}\r\n\r\nexport const sessionStorageDriver = new DOMStorageDriver(sessionStorage);\r\n\r\nexport const localStorageDriver = new DOMStorageDriver(localStorage);\r\n","import { from, Observable, of } from 'rxjs';\r\nimport { take } from 'rxjs/operators';\r\n\r\nimport { StorageDriver } from '../types';\r\n\r\nexport function load<T>(key: string, next: (value: T) => void, storage: StorageDriver) {\r\n  const result = storage.get(key);\r\n\r\n  if (result instanceof Observable) {\r\n    result.pipe(take(1)).subscribe(v => next(v));\r\n    return;\r\n  }\r\n\r\n  if (typeof (result as Promise<T>)?.then === 'function') {\r\n    (result as Promise<T>).then(v => next(v));\r\n    return;\r\n  }\r\n\r\n  if (result !== null && result !== undefined) {\r\n    next(result as T);\r\n  }\r\n}\r\n\r\nexport function loadAsObservable<T>(key: string, storage: StorageDriver): Observable<T | null> {\r\n  const result = storage.get<T>(key);\r\n\r\n  if (result instanceof Observable) {\r\n    return result.pipe(take(1));\r\n  }\r\n\r\n  if (typeof (result as Promise<T>)?.then === 'function') {\r\n    return from(result as Promise<T>);\r\n  }\r\n\r\n  return of(result as T);\r\n}\r\n\r\nexport function save<T>(key: string, storage: StorageDriver, value: T): Observable<any> {\r\n  const result = storage.set(key, value);\r\n\r\n  if (result instanceof Observable) {\r\n    return result.pipe(take(1));\r\n  }\r\n\r\n  if (typeof (result as Promise<T>)?.then === 'function') {\r\n    return from(result as Promise<T>);\r\n  }\r\n\r\n  return of(true);\r\n}\r\n\r\nexport function getStorageKey(key: string | string[]) {\r\n  return typeof key === 'string' ? key : key.join('.');\r\n}\r\n","export class StorageAccessMock implements Storage {\r\n  readonly storage: any = {};\r\n\r\n  readonly length = 0;\r\n\r\n  clear(): void {\r\n  }\r\n\r\n  getItem(key: string): string | null {\r\n    return this.storage[ key ] === undefined ? null : this.storage[ key ];\r\n  }\r\n\r\n  key(index: number): string | null {\r\n    return null;\r\n  }\r\n\r\n  removeItem(key: string): void {\r\n    delete this.storage[ key ];\r\n  }\r\n\r\n  setItem(key: string, value: string): void {\r\n    this.storage[ key ] = value;\r\n  }\r\n}\r\n","import { Subject } from 'rxjs';\r\n\r\nimport { StorageDriver } from '../types';\r\n\r\nimport { localStorageDriver } from '../storage';\r\n\r\nimport { getStorageKey, load, save } from '../internal';\r\n\r\nexport function persistent<T, S extends Subject<T>>(subject: S,\r\n                                                    key: string | string[],\r\n                                                    storage: StorageDriver = localStorageDriver): S {\r\n\r\n  const next = subject.next.bind(subject);\r\n\r\n  const storageKey = getStorageKey(key);\r\n\r\n  load(storageKey, next, storage);\r\n\r\n  subject.next = (value: T) => save(storageKey, storage, value).subscribe(() => next(value));\r\n\r\n  return subject;\r\n}\r\n","import { from, Subject } from 'rxjs';\r\nimport { concatMap, filter, map, switchMap, takeLast } from 'rxjs/operators';\r\n\r\nimport { getStorageKey, load, loadAsObservable, save } from '../internal';\r\n\r\nimport { VersionedOptions } from '../types';\r\n\r\nimport { localStorageDriver } from '../storage';\r\n\r\nexport function persistentAndVersioned<T, S extends Subject<T>>(subject: S,\r\n                                                                key: string | string[],\r\n                                                                options: VersionedOptions): S {\r\n  const next = subject.next.bind(subject);\r\n\r\n  const storage = options.storage !== undefined ? options.storage : localStorageDriver;\r\n\r\n  const storageKey = getStorageKey(key);\r\n  const versionKey = getStorageKey(options.versionKey);\r\n\r\n  loadAsObservable<number>(versionKey, storage)\r\n    .pipe(\r\n      map(version => typeof version === 'number' ? version : 0),\r\n\r\n      switchMap(version => from([ ...Array(options.currentVersion).keys() ])\r\n        .pipe(filter(v => v >= version))),\r\n\r\n      concatMap(version => loadAsObservable<any>(storageKey, storage)\r\n        .pipe(\r\n          map(value => options.migrate(version, value)),\r\n          concatMap(value => save(storageKey, storage, value)),\r\n          concatMap(() => save(versionKey, storage, version + 1)))),\r\n\r\n      takeLast(1))\r\n\r\n    .subscribe({ complete: () => load(storageKey, next, storage) });\r\n\r\n  subject.next = (value: T) => save(storageKey, storage, value).subscribe(() => next(value));\r\n\r\n  return subject;\r\n}\r\n","/**\n * Generated bundle index. 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