import { Dictionary, WithThisType } from './types';
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export declare type EventCallbackSingleParam<EvtParam = any> = EvtParam extends any ? (params: EvtParam) => boolean | void : never;
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export declare type EventCallback<EvtParams = any[]> = EvtParams extends any[] ? (...args: EvtParams) => boolean | void : never;
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export declare type EventQuery = string | Object;
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declare type CbThis<Ctx, Impl> = unknown extends Ctx ? Impl : Ctx;
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declare type DefaultEventDefinition = Dictionary<EventCallback<any[]>>;
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export interface EventProcessor<EvtDef = DefaultEventDefinition> {
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normalizeQuery?: (query: EventQuery) => EventQuery;
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filter?: (eventType: keyof EvtDef, query: EventQuery) => boolean;
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afterTrigger?: (eventType: keyof EvtDef) => void;
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}
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export default class Eventful<EvtDef extends DefaultEventDefinition = DefaultEventDefinition> {
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private _$handlers;
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protected _$eventProcessor: EventProcessor<EvtDef>;
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constructor(eventProcessors?: EventProcessor<EvtDef>);
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on<Ctx, EvtNm extends keyof EvtDef>(event: EvtNm, handler: WithThisType<EvtDef[EvtNm], CbThis<Ctx, this>>, context?: Ctx): this;
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on<Ctx, EvtNm extends keyof EvtDef>(event: EvtNm, query: EventQuery, handler: WithThisType<EvtDef[EvtNm], CbThis<Ctx, this>>, context?: Ctx): this;
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isSilent(eventName: keyof EvtDef): boolean;
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off(eventType?: keyof EvtDef, handler?: Function): this;
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trigger<EvtNm extends keyof EvtDef>(eventType: EvtNm, ...args: Parameters<EvtDef[EvtNm]>): this;
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triggerWithContext(type: keyof EvtDef, ...args: any[]): this;
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}
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export {};
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