@datorama/akita
Version:
State Management Tailored-Made for JS Applications
387 lines • 27.4 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { BehaviorSubject } from 'rxjs';
import { distinctUntilChanged, map } from 'rxjs/operators';
import { assertStoreHasName } from './errors';
import { commit, isTransactionInProcess } from './transaction';
import { deepFreeze } from './deepFreeze';
import { configKey } from './storeConfig';
import { getAkitaConfig } from './config';
import { isPlainObject } from './isPlainObject';
import { isFunction } from './isFunction';
import { dispatchAdded, dispatchDeleted, dispatchUpdate } from './dispatchers';
import { __stores__ } from './stores';
import { resetCustomAction, setAction } from './actions';
import { isNotBrowser } from './root';
import { __DEV__, isDev } from './env';
/**
*
* Store for managing any type of data
*
* \@example
*
* export interface SessionState {
* token: string;
* userDetails: UserDetails
* }
*
* export function createInitialState(): SessionState {
* return {
* token: '',
* userDetails: null
* };
* }
*
* \@StoreConfig({ name: 'session' })
* export class SessionStore extends Store<SessionState> {
* constructor() {
* super(createInitialState());
* }
* }
* @template S
*/
export class Store {
/**
* @param {?} initialState
* @param {?=} options
*/
constructor(initialState, options = {}) {
this.options = options;
this.inTransaction = false;
this.cache = {
active: new BehaviorSubject(false),
ttl: null
};
this.onInit((/** @type {?} */ (initialState)));
}
/**
* Set the loading state
*
* \@example
*
* store.setLoading(true)
*
* @param {?=} loading
* @return {?}
*/
setLoading(loading = false) {
if (loading !== ((/** @type {?} */ (this._value()))).loading) {
isDev() && setAction('Set Loading');
this._setState((/**
* @param {?} state
* @return {?}
*/
state => ((/** @type {?} */ (Object.assign({}, state, { loading }))))));
}
}
/**
*
* Set whether the data is cached
*
* \@example
*
* store.setHasCache(true)
* store.setHasCache(false)
* store.setHasCache(true, { restartTTL: true })
*
* @param {?} hasCache
* @param {?=} options
* @return {?}
*/
setHasCache(hasCache, options = { restartTTL: false }) {
if (hasCache !== this.cache.active.value) {
this.cache.active.next(hasCache);
}
if (options.restartTTL) {
/** @type {?} */
const ttlConfig = this.cacheConfig && this.cacheConfig.ttl;
if (ttlConfig) {
if (this.cache.ttl !== null) {
clearTimeout(this.cache.ttl);
}
this.cache.ttl = (/** @type {?} */ (setTimeout((/**
* @return {?}
*/
() => this.setHasCache(false)), ttlConfig)));
}
}
}
/**
* Set the error state
*
* \@example
*
* store.setError({text: 'unable to load data' })
*
* @template T
* @param {?} error
* @return {?}
*/
setError(error) {
if (error !== ((/** @type {?} */ (this._value()))).error) {
isDev() && setAction('Set Error');
this._setState((/**
* @param {?} state
* @return {?}
*/
state => ((/** @type {?} */ (Object.assign({}, state, { error }))))));
}
}
// @internal
/**
* @template R
* @param {?} project
* @return {?}
*/
_select(project) {
return this.store.asObservable().pipe(map(project), distinctUntilChanged());
}
// @internal
/**
* @return {?}
*/
_value() {
return this.storeValue;
}
// @internal
/**
* @return {?}
*/
_cache() {
return this.cache.active;
}
// @internal
/**
* @return {?}
*/
get config() {
return this.constructor[configKey] || {};
}
// @internal
/**
* @return {?}
*/
get storeName() {
return ((/** @type {?} */ (this.config))).storeName || ((/** @type {?} */ (this.options))).storeName || this.options.name;
}
// @internal
/**
* @return {?}
*/
get deepFreeze() {
return this.config.deepFreezeFn || this.options.deepFreezeFn || deepFreeze;
}
// @internal
/**
* @return {?}
*/
get cacheConfig() {
return this.config.cache || this.options.cache;
}
// @internal
/**
* @return {?}
*/
get resettable() {
return this.config.resettable || this.options.resettable;
}
// @internal
/**
* @param {?} newStateFn
* @param {?=} _dispatchAction
* @return {?}
*/
_setState(newStateFn, _dispatchAction = true) {
this.storeValue = __DEV__ ? this.deepFreeze(newStateFn(this._value())) : newStateFn(this._value());
if (!this.store) {
this.store = new BehaviorSubject(this.storeValue);
return;
}
if (isTransactionInProcess()) {
this.handleTransaction();
return;
}
this.dispatch(this.storeValue, _dispatchAction);
}
/**
*
* Reset the current store back to the initial value
*
* \@example
*
* store.reset()
*
* @return {?}
*/
reset() {
if (this.isResettable()) {
isDev() && setAction('Reset');
this._setState((/**
* @return {?}
*/
() => Object.assign({}, this._initialState)));
this.setHasCache(false);
}
else {
isDev() && console.warn(`You need to enable the reset functionality`);
}
}
/**
* @param {?} stateOrCallback
* @return {?}
*/
update(stateOrCallback) {
isDev() && setAction('Update');
this._setState((/**
* @param {?} state
* @return {?}
*/
state => {
/** @type {?} */
const newState = isFunction(stateOrCallback) ? stateOrCallback(state) : stateOrCallback;
/** @type {?} */
const merged = this.akitaPreUpdate(state, (/** @type {?} */ (Object.assign({}, state, newState))));
return isPlainObject(state) ? merged : new ((/** @type {?} */ (state))).constructor(merged);
}));
}
/**
* @param {?} newOptions
* @return {?}
*/
updateStoreConfig(newOptions) {
this.options = Object.assign({}, this.options, newOptions);
}
// @internal
/**
* @param {?} _
* @param {?} nextState
* @return {?}
*/
akitaPreUpdate(_, nextState) {
return nextState;
}
/**
* @return {?}
*/
ngOnDestroy() {
this.destroy();
}
/**
*
* Destroy the store
*
* \@example
*
* store.destroy()
*
* @return {?}
*/
destroy() {
if (isNotBrowser)
return;
if (!((/** @type {?} */ (window))).hmrEnabled && this === __stores__[this.storeName]) {
delete __stores__[this.storeName];
dispatchDeleted(this.storeName);
this.setHasCache(false);
this.cache.active.complete();
}
}
/**
* @private
* @param {?} initialState
* @return {?}
*/
onInit(initialState) {
__stores__[this.storeName] = this;
this._setState((/**
* @return {?}
*/
() => initialState));
dispatchAdded(this.storeName);
if (this.isResettable()) {
this._initialState = initialState;
}
isDev() && assertStoreHasName(this.storeName, this.constructor.name);
}
/**
* @private
* @param {?} state
* @param {?=} _dispatchAction
* @return {?}
*/
dispatch(state, _dispatchAction = true) {
this.store.next(state);
if (_dispatchAction) {
dispatchUpdate(this.storeName);
resetCustomAction();
}
}
/**
* @private
* @return {?}
*/
watchTransaction() {
commit().subscribe((/**
* @return {?}
*/
() => {
this.inTransaction = false;
this.dispatch(this._value());
}));
}
/**
* @private
* @return {?}
*/
isResettable() {
if (this.resettable === false) {
return false;
}
return this.resettable || getAkitaConfig().resettable;
}
/**
* @private
* @return {?}
*/
handleTransaction() {
if (!this.inTransaction) {
this.watchTransaction();
this.inTransaction = true;
}
}
}
if (false) {
/**
* @type {?}
* @private
*/
Store.prototype.store;
/**
* @type {?}
* @private
*/
Store.prototype.storeValue;
/**
* @type {?}
* @private
*/
Store.prototype.inTransaction;
/**
* @type {?}
* @private
*/
Store.prototype._initialState;
/**
* @type {?}
* @protected
*/
Store.prototype.cache;
/**
* @type {?}
* @protected
*/
Store.prototype.options;
}
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{ StoreCache, UpdateStateCallback } from './types';\nimport { BehaviorSubject, Observable } from 'rxjs';\nimport { distinctUntilChanged, map } from 'rxjs/operators';\nimport { assertStoreHasName } from './errors';\nimport { commit, isTransactionInProcess } from './transaction';\nimport { deepFreeze } from './deepFreeze';\nimport { configKey, StoreConfigOptions, UpdatableStoreConfigOptions } from './storeConfig';\nimport { getAkitaConfig } from './config';\nimport { isPlainObject } from './isPlainObject';\nimport { isFunction } from './isFunction';\nimport { dispatchAdded, dispatchDeleted, dispatchUpdate } from './dispatchers';\nimport { __stores__ } from './stores';\nimport { resetCustomAction, setAction } from './actions';\nimport { isNotBrowser } from './root';\nimport { __DEV__, isDev } from './env';\n\n/**\n *\n * Store for managing any type of data\n *\n * @example\n *\n * export interface SessionState {\n *   token: string;\n *   userDetails: UserDetails\n * }\n *\n * export function createInitialState(): SessionState {\n *  return {\n *    token: '',\n *    userDetails: null\n *  };\n * }\n *\n * @StoreConfig({ name: 'session' })\n * export class SessionStore extends Store<SessionState> {\n *   constructor() {\n *    super(createInitialState());\n *   }\n * }\n */\nexport class Store<S = any> {\n  private store: BehaviorSubject<Readonly<S>>;\n  private storeValue: S;\n  private inTransaction = false;\n  private _initialState: S;\n  protected cache: StoreCache = {\n    active: new BehaviorSubject<boolean>(false),\n    ttl: null\n  };\n\n  constructor(initialState: Partial<S>, protected options: Partial<StoreConfigOptions> = {}) {\n    this.onInit(initialState as S);\n  }\n\n  /**\n   *  Set the loading state\n   *\n   *  @example\n   *\n   *  store.setLoading(true)\n   *\n   */\n  setLoading(loading = false) {\n    if (loading !== (this._value() as S & { loading: boolean }).loading) {\n      isDev() && setAction('Set Loading');\n      this._setState(state => ({ ...state, loading } as S & { loading: boolean }));\n    }\n  }\n\n  /**\n   *\n   * Set whether the data is cached\n   *\n   * @example\n   *\n   * store.setHasCache(true)\n   * store.setHasCache(false)\n   * store.setHasCache(true, { restartTTL: true })\n   *\n   */\n  setHasCache(hasCache: boolean, options: { restartTTL: boolean } = { restartTTL: false }) {\n    if (hasCache !== this.cache.active.value) {\n      this.cache.active.next(hasCache);\n    }\n\n    if (options.restartTTL) {\n      const ttlConfig = this.cacheConfig && this.cacheConfig.ttl;\n      if (ttlConfig) {\n        if (this.cache.ttl !== null) {\n          clearTimeout(this.cache.ttl);\n        }\n        this.cache.ttl = <any>setTimeout(() => this.setHasCache(false), ttlConfig);\n      }\n    }\n  }\n\n  /**\n   *  Set the error state\n   *\n   *  @example\n   *\n   *  store.setError({text: 'unable to load data' })\n   *\n   */\n  setError<T>(error: T) {\n    if (error !== (this._value() as S & { error: any }).error) {\n      isDev() && setAction('Set Error');\n      this._setState(state => ({ ...state, error } as S & { error: any }));\n    }\n  }\n\n  // @internal\n  _select<R>(project: (store: S) => R): Observable<R> {\n    return this.store.asObservable().pipe(\n      map(project),\n      distinctUntilChanged()\n    );\n  }\n\n  // @internal\n  _value(): S {\n    return this.storeValue;\n  }\n\n  // @internal\n  _cache(): BehaviorSubject<boolean> {\n    return this.cache.active;\n  }\n\n  // @internal\n  get config(): StoreConfigOptions {\n    return this.constructor[configKey] || {};\n  }\n\n  // @internal\n  get storeName() {\n    return (this.config as StoreConfigOptions & { storeName: string }).storeName || (this.options as StoreConfigOptions & { storeName: string }).storeName || this.options.name;\n  }\n\n  // @internal\n  get deepFreeze() {\n    return this.config.deepFreezeFn || this.options.deepFreezeFn || deepFreeze;\n  }\n\n  // @internal\n  get cacheConfig() {\n    return this.config.cache || this.options.cache;\n  }\n\n  // @internal\n  get resettable() {\n    return this.config.resettable || this.options.resettable;\n  }\n\n  // @internal\n  _setState(newStateFn: (state: Readonly<S>) => S, _dispatchAction = true) {\n    this.storeValue = __DEV__ ? this.deepFreeze(newStateFn(this._value())) : newStateFn(this._value());\n\n    if (!this.store) {\n      this.store = new BehaviorSubject(this.storeValue);\n      return;\n    }\n\n    if (isTransactionInProcess()) {\n      this.handleTransaction();\n      return;\n    }\n\n    this.dispatch(this.storeValue, _dispatchAction);\n  }\n\n  /**\n   *\n   * Reset the current store back to the initial value\n   *\n   * @example\n   *\n   * store.reset()\n   *\n   */\n  reset() {\n    if (this.isResettable()) {\n      isDev() && setAction('Reset');\n      this._setState(() => Object.assign({}, this._initialState));\n      this.setHasCache(false);\n    } else {\n      isDev() && console.warn(`You need to enable the reset functionality`);\n    }\n  }\n\n  /**\n   *\n   * Update the store's value\n   *\n   * @example\n   *\n   * this.store.update(state => {\n   *   return {...}\n   * })\n   */\n  update(stateCallback: UpdateStateCallback<S>);\n  /**\n   *\n   * @example\n   *\n   *  this.store.update({ token: token })\n   */\n  update(state: Partial<S>);\n  update(stateOrCallback: Partial<S> | UpdateStateCallback<S>) {\n    isDev() && setAction('Update');\n\n    this._setState(state => {\n      const newState = isFunction(stateOrCallback) ? stateOrCallback(state) : stateOrCallback;\n      const merged = this.akitaPreUpdate(state, { ...state, ...newState } as S);\n      return isPlainObject(state) ? merged : new (state as any).constructor(merged);\n    });\n  }\n\n  updateStoreConfig(newOptions: UpdatableStoreConfigOptions) {\n    this.options = { ...this.options, ...newOptions };\n  }\n\n  // @internal\n  akitaPreUpdate(_: Readonly<S>, nextState: Readonly<S>): S {\n    return nextState;\n  }\n\n  ngOnDestroy() {\n    this.destroy();\n  }\n\n  /**\n   *\n   * Destroy the store\n   *\n   * @example\n   *\n   * store.destroy()\n   *\n   */\n  destroy() {\n    if (isNotBrowser) return;\n    if (!(window as any).hmrEnabled && this === __stores__[this.storeName]) {\n      delete __stores__[this.storeName];\n      dispatchDeleted(this.storeName);\n      this.setHasCache(false);\n      this.cache.active.complete();\n    }\n  }\n\n  private onInit(initialState: S) {\n    __stores__[this.storeName] = this;\n    this._setState(() => initialState);\n    dispatchAdded(this.storeName);\n    if (this.isResettable()) {\n      this._initialState = initialState;\n    }\n    isDev() && assertStoreHasName(this.storeName, this.constructor.name);\n  }\n\n  private dispatch(state: S, _dispatchAction = true) {\n    this.store.next(state);\n    if (_dispatchAction) {\n      dispatchUpdate(this.storeName);\n      resetCustomAction();\n    }\n  }\n\n  private watchTransaction() {\n    commit().subscribe(() => {\n      this.inTransaction = false;\n      this.dispatch(this._value());\n    });\n  }\n\n  private isResettable() {\n    if (this.resettable === false) {\n      return false;\n    }\n    return this.resettable || getAkitaConfig().resettable;\n  }\n\n  private handleTransaction() {\n    if (!this.inTransaction) {\n      this.watchTransaction();\n      this.inTransaction = true;\n    }\n  }\n}\n"]}