@launchdarkly/js-sdk-common/dist/esm/api/platform/EventSource.d.ts

LaunchDarkly SDK for JavaScript - common code

import type { HttpErrorResponse } from './Requests';
export type EventName = string;
export type EventListener = (event?: {
    data?: any;
}) => void;
export type ProcessStreamResponse = {
    deserializeData: (data: string) => any;
    processJson: (json: any, initHeaders?: {
        [key: string]: string;
    }) => void;
};
export interface EventSource {
    onclose: (() => void) | undefined;
    onerror: ((err?: HttpErrorResponse) => void) | undefined;
    onopen: ((e: {
        headers?: {
            [key: string]: string;
        };
    }) => void) | undefined;
    onretrying: ((e: {
        delayMillis: number;
    }) => void) | undefined;
    addEventListener(type: EventName, listener: EventListener): void;
    close(): void;
}
export interface EventSourceInitDict {
    method?: string;
    headers: {
        [key: string]: string | string[];
    };
    body?: string;
    errorFilter: (err: HttpErrorResponse) => boolean;
    initialRetryDelayMillis: number;
    readTimeoutMillis: number;
    retryResetIntervalMillis: number;
    /**
     * Optional callback that returns a fresh URL on each reconnection attempt.
     * When provided, the EventSource implementation should call this instead of
     * reusing the original URL. This allows query parameters (e.g. `basis`) to
     * be updated between reconnections.
     */
    urlBuilder?: () => string;
}
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