/**
 * Context tag keys, mirroring `client.context.keys` from the SDK so callers can
 * keep using the familiar `tags[keys.userId]` idiom.
 */
export declare const contextTagKeys: {
    readonly userId: "ai.user.id";
    readonly cloudRoleInstance: "ai.cloud.roleInstance";
};
/** Arguments for {@link AppInsightsClient.trackEvent}. */
export interface TrackEventArgs {
    name: string;
    properties?: Record<string, string>;
    measurements?: Record<string, number>;
}
/** Arguments for {@link AppInsightsClient.trackException}. */
export interface TrackExceptionArgs {
    exception: Error;
    properties?: Record<string, string>;
    measurements?: Record<string, number>;
}
/**
 * Parse an Application Insights connection string into the instrumentation key
 * and resolved ingestion `/v2.1/track` URL.
 *
 * The connection string is semicolon-delimited `key=value` pairs with
 * case-insensitive keys, e.g.
 * `InstrumentationKey=<guid>;IngestionEndpoint=https://<region>.in.applicationinsights.azure.com/`.
 *
 * Plain GUIDs (legacy instrumentation keys with no `=`) are also accepted.
 *
 * @returns the iKey and track URL, or `null` if no instrumentation key is present.
 */
export declare function parseConnectionString(connectionString: string): {
    iKey: string;
    trackUrl: string;
} | null;
/**
 * A minimal, dependency-free Application Insights client.
 *
 * Construct with an instrumentation key or connection string, optionally set
 * {@link AppInsightsClient.context} tags, then buffer telemetry via
 * {@link AppInsightsClient.trackEvent}/{@link AppInsightsClient.trackException}
 * and deliver it with {@link AppInsightsClient.flush}.
 *
 * If the connection string has no instrumentation key, the client becomes an
 * inert no-op (every method silently does nothing) — it never throws into
 * calling code.
 */
export declare class AppInsightsClient {
    /**
     * SDK-compatible config bag. Retained so callers can read
     * `config.connectionString`; the SDK's auto-collection toggles are obsolete
     * here (this client only does manual tracking) and are intentionally absent.
     */
    readonly config: {
        connectionString: string;
    };
    /** SDK-compatible context: per-envelope tags plus the canonical key names. */
    readonly context: {
        tags: Record<string, string>;
        keys: typeof contextTagKeys;
    };
    private readonly iKey;
    private readonly trackUrl;
    private readonly timeoutMs;
    private buffer;
    constructor(connectionString: string, options?: {
        timeoutMs?: number;
    });
    /** Buffer an event envelope. Delivered on the next {@link flush}. */
    trackEvent(args: TrackEventArgs): void;
    /** Buffer an exception envelope. Delivered on the next {@link flush}. */
    trackException(args: TrackExceptionArgs): void;
    /**
     * POST all buffered envelopes to the ingestion endpoint in one request and
     * clear the buffer. Best-effort: any network/HTTP error is swallowed (the
     * buffer is still cleared) so telemetry never affects the caller.
     */
    flush(): Promise<void>;
    /** Build a Breeze envelope, stamping the current context tags and time. */
    private envelope;
}