@antischematic/angular-state-library
Version:
Reactive state without boilerplate
145 lines • 14.6 kB
JavaScript
import { inject, Injectable, InjectionToken } from "@angular/core";
import { Subject, Subscription, switchAll } from "rxjs";
import { getErrorHandlers } from "./metadata";
import { track } from "./proxy";
import { UID } from "./utils";
import * as i0 from "@angular/core";
export const ACTION = new InjectionToken("ACTION");
export const CONTEXT = new InjectionToken("CONTEXT");
export const STORE_CONFIG = new InjectionToken("STORE_CONFIG");
export const ROOT_CONFIG = new InjectionToken("ROOT_CONFIG", {
factory() {
return {};
}
});
export const EVENTS = new InjectionToken("EVENTS", {
factory() {
return new Subject();
}
});
export class EventScheduler {
constructor(context) {
this.context = context;
this.events = [];
this.dispatcher = inject(EVENTS);
this.getId = inject(UID);
}
schedule(type, name, value, changes) {
this.events.push({
id: this.getId(),
timestamp: Date.now(),
type,
context: this.context,
name,
value,
changes
});
}
flush() {
const events = this.events;
if (events.length) {
let event;
this.events = [];
while (event = events.shift()) {
this.dispatcher.next(event);
}
}
return this.events.length > 0;
}
}
export class EffectScheduler {
constructor() {
this.source = new Subject();
this.queue = [];
this.connected = false;
this.subscription = Subscription.EMPTY;
this.pending = new Set;
this.closed = false;
}
next(source) {
this.connect();
this.source.next(source);
}
enqueue(source) {
this.queue.push(source);
}
dequeue() {
let effect;
if (this.pending.size === 0) {
while (effect = this.queue.shift()) {
this.next(effect);
}
}
}
connect() {
if (!this.connected && !this.closed) {
this.connected = true;
this.subscription = this.source.pipe(this.operator ?? switchAll()).subscribe();
this.subscription.add(() => this.connected = false);
}
}
addPending(promise) {
this.pending.add(promise);
promise.finally(() => {
this.pending.delete(promise);
this.dequeue();
});
}
ngOnDestroy() {
this.closed = true;
this.source.complete();
this.subscription.unsubscribe();
}
}
EffectScheduler.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.0.0", ngImport: i0, type: EffectScheduler, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
EffectScheduler.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "15.0.0", ngImport: i0, type: EffectScheduler });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.0.0", ngImport: i0, type: EffectScheduler, decorators: [{
type: Injectable
}] });
export class Teardown {
constructor() {
this.subscriptions = [];
}
unsubscribe() {
let subscription;
while (subscription = this.subscriptions.shift()) {
subscription.unsubscribe();
}
}
ngOnDestroy() {
this.unsubscribe();
}
}
Teardown.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.0.0", ngImport: i0, type: Teardown, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
Teardown.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "15.0.0", ngImport: i0, type: Teardown });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.0.0", ngImport: i0, type: Teardown, decorators: [{
type: Injectable
}] });
export class Changes {
constructor(target) {
this.target = target;
}
get value() {
return track(this.target.__ngSimpleChanges__?.previous) ?? {};
}
}
export class StoreErrorHandler {
constructor(prototype, instance) {
this.prototype = prototype;
this.instance = instance;
}
handleError(error) {
const errorHandlers = getErrorHandlers(this.prototype);
for (const handler of errorHandlers) {
try {
this.instance[handler.key].call(this.instance, error);
break;
}
catch (e) {
error = e;
}
}
throw error;
}
}
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{ErrorHandler, inject, Injectable, InjectionToken} from \"@angular/core\";\nimport {Observable, OperatorFunction, Subject, Subscription, switchAll} from \"rxjs\";\nimport {ActionMetadata, EventType, StoreConfig, StoreEvent} from \"./interfaces\";\nimport {getErrorHandlers} from \"./metadata\";\nimport {track} from \"./proxy\";\nimport {UID} from \"./utils\";\n\nexport const ACTION = new InjectionToken<ActionMetadata>(\"ACTION\")\nexport const CONTEXT = new InjectionToken<{ instance: unknown }>(\"CONTEXT\")\nexport const STORE_CONFIG = new InjectionToken<StoreConfig>(\"STORE_CONFIG\")\nexport const ROOT_CONFIG = new InjectionToken<StoreConfig>(\"ROOT_CONFIG\", {\n   factory() {\n      return {}\n   }\n})\nexport const EVENTS = new InjectionToken(\"EVENTS\", {\n   factory() {\n      return new Subject<StoreEvent>()\n   }\n})\n\nexport class EventScheduler {\n   events: StoreEvent<any, any, any, any>[] = []\n   dispatcher = inject(EVENTS)\n   getId = inject(UID)\n\n   schedule(type: EventType, name: string, value: unknown, changes: Map<any, any>) {\n      this.events.push({\n         id: this.getId(),\n         timestamp: Date.now(),\n         type,\n         context: this.context,\n         name,\n         value,\n         changes\n      })\n   }\n\n   flush() {\n      const events = this.events\n      if (events.length) {\n         let event\n         this.events = []\n         while (event = events.shift()) {\n            this.dispatcher.next(event)\n         }\n      }\n      return this.events.length > 0\n   }\n\n   constructor(private context: {}) {}\n}\n\n@Injectable()\nexport class EffectScheduler {\n   source = new Subject<Observable<any>>()\n   queue: any[] = []\n   operator?: OperatorFunction<Observable<any>, any>\n   connected = false\n   subscription = Subscription.EMPTY\n   pending = new Set\n   closed = false\n\n   next(source: Observable<any>) {\n      this.connect()\n      this.source.next(source)\n   }\n\n   enqueue(source: Observable<any>) {\n      this.queue.push(source)\n   }\n\n   dequeue() {\n      let effect: any\n      if (this.pending.size === 0) {\n         while (effect = this.queue.shift()) {\n            this.next(effect)\n         }\n      }\n   }\n\n   connect() {\n      if (!this.connected && !this.closed) {\n         this.connected = true\n         this.subscription = this.source.pipe(this.operator ?? switchAll()).subscribe()\n         this.subscription.add(() => this.connected = false)\n      }\n   }\n\n   addPending(promise: Promise<any>) {\n      this.pending.add(promise)\n      promise.finally(() => {\n         this.pending.delete(promise)\n         this.dequeue()\n      })\n   }\n\n   ngOnDestroy() {\n      this.closed = true\n      this.source.complete()\n      this.subscription.unsubscribe()\n   }\n}\n\n@Injectable()\nexport class Teardown {\n   subscriptions: Subscription[] = []\n\n   unsubscribe() {\n      let subscription\n      while (subscription = this.subscriptions.shift()) {\n         subscription.unsubscribe()\n      }\n   }\n\n   ngOnDestroy() {\n      this.unsubscribe()\n   }\n}\n\nexport class Changes {\n   get value() {\n      return track(this.target.__ngSimpleChanges__?.previous) ?? {}\n   }\n\n   constructor(private target: any) {}\n}\n\nexport class StoreErrorHandler implements ErrorHandler {\n   handleError(error: unknown) {\n      const errorHandlers = getErrorHandlers(this.prototype)\n      for (const handler of errorHandlers) {\n         try {\n            this.instance[handler.key].call(this.instance, error)\n            break\n         } catch (e) {\n            error = e\n         }\n      }\n      throw error\n   }\n\n   constructor(private prototype: any, private instance: any) {}\n}\n"]}