import { GenericEventsType } from "./schemaHelpers";
export declare const isDefined: <T>(val: T | null | undefined) => val is T;
export type EventFromType<T, K extends GenericEventsType> = K & {
    type: T;
};
export type ExtractDataFromEvents<Events, Types> = Events extends {
    type: Types;
    data: infer Data;
} ? ObjectWithOnlyStringOrNumberValues<Data> : never;
export type UnionToIntersection<U> = (U extends any ? (k: U) => void : never) extends ((k: infer I) => void) ? I : never;
export type DataForEventTypes<Events, Types> = UnionToIntersection<ExtractDataFromEvents<Events, Types>>;
type ExtractEventData<Event, Type> = Event extends {
    type: Type;
    data: infer Data;
} ? Data : never;
type IntersectEventData<Events, Types> = UnionToIntersection<ExtractEventData<Events, Types>>;
export type StreamOptionsForEvents<Events extends {
    type: Type;
}, Type extends string | number | symbol> = {
    eventTypes: Type[];
    options?: {
        data?: Partial<ObjectWithOnlyStringOrNumberValuesOrArrayValues<IntersectEventData<Events, Type>>>;
        after?: string;
    };
};
type KeysWithNumericValues<T> = {
    [key in keyof T]: T[key] extends number | undefined ? key : never;
}[keyof T];
type KeysWithStringValues<T> = {
    [key in keyof T]: T[key] extends string | undefined ? key : never;
}[keyof T];
type ObjectWithOnlyNumericValues<T> = {
    [key in KeysWithNumericValues<T>]: number;
};
type ObjectWithOnlyStringValues<T> = {
    [key in KeysWithStringValues<T>]: string;
};
type ObjectWithOnlyNumericArrayValues<T> = {
    [key in KeysWithNumericValues<T>]: number[];
};
type ObjectWithOnlyStringArrayValues<T> = {
    [key in KeysWithStringValues<T>]: string[];
};
export type ObjectWithOnlyStringOrNumberValues<T> = ObjectWithOnlyNumericValues<T> & ObjectWithOnlyStringValues<T>;
export type ObjectWithOnlyStringOrNumberArrayValues<T> = ObjectWithOnlyNumericArrayValues<T> & ObjectWithOnlyStringArrayValues<T>;
export type ObjectWithOnlyStringOrNumberValuesOrArrayValues<T> = ObjectWithOnlyStringOrNumberValues<T> | ObjectWithOnlyStringOrNumberArrayValues<T>;
export {};