import { ApolloLink } from "@apollo/client/link";
export declare namespace ClientAwarenessLink {
    /**
     * Options passed to `ClientAwarenessLink` through [request context](https://apollographql.com/docs/react/api/link/introduction#managing-context). Previous
     * non-terminating links in the link chain also can set these values to
     * customize the behavior of `ClientAwarenessLink` for each operation.
     *
     * > [!NOTE]
     * > Some of these values can also be provided to the `ClientAwarenessLink`
     * > constructor. If a value is provided to both, the value in `context` takes
     * > precedence.
     */
    interface ContextOptions {
        /**
        * Configures the "client awareness" feature.
        * This feature allows you to identify distinct applications in Apollo Studio
        * and Apollo Server logs (and other monitoring or analytics tools) by adding
        * information about the your application to outgoing requests.
        */
        clientAwareness?: ClientAwarenessLink.ClientAwarenessOptions;
    }
    interface ClientAwarenessOptions {
        /**
         * A custom name (e.g., `iOS`) that identifies this particular client among your set of clients. Apollo Server and Apollo Studio use this property as part of the [client awareness](https://www.apollographql.com/docs/apollo-server/monitoring/metrics#identifying-distinct-clients) feature.
         *
         * This option can either be set as part of the Apollo Client constructor call or when manually constructing a `HttpLink`, `BatchHttpLink` or `ClientAwarenessLink`.
         */
        name?: string;
        /**
         * A custom version that identifies the current version of this particular client (e.g., `1.2`). Apollo Server and Apollo Studio use this property as part of the [client awareness](https://www.apollographql.com/docs/apollo-server/monitoring/metrics#identifying-distinct-clients) feature.
         *
         * This is **not** the version of Apollo Client that you are using, but rather any version string that helps you differentiate between versions of your client.
         *
         * This option can either be set as part of the Apollo Client constructor call or when manually constructing a `HttpLink`, `BatchHttpLink` or `ClientAwarenessLink`.
         */
        version?: string;
        /**
         * Determines how `name` and `version` are sent in outgoing requests.
         *
         * If `name` and `version` are not provided, this option will be ignored.
         * (These options can either be set as part of the Apollo Client constructor call or when manually constructing a `HttpLink`, `BatchHttpLink` or `ClientAwarenessLink`.)
         *
         * - If set to `"headers"`, `name` and `version` will be sent in the request headers as `apollographql-client-name` and `apollographql-client-version`, respectively.
         * - If set to `false`, `name` and `version` will not be included in outgoing requests.
         *
         * @defaultValue "headers"
         */
        transport?: "headers" | false;
    }
    interface EnhancedClientAwarenessOptions {
        /**
         * Determines how the the version information of Apollo Client is sent in outgoing requests.
         *
         * - If set to `"extensions"`, library `name` and `version` will be sent in an object in the request extensions as `clientLibrary`.
         * - If set to `false`, library name and version will not be included in outgoing requests.
         *
         * @defaultValue "extensions"
         */
        transport?: "headers" | "extensions" | false;
    }
    interface Options {
        /**
         * Configures the "client awareness" feature.
         * This feature allows you to identify distinct applications in Apollo Studio
         * and Apollo Server logs (and other monitoring or analytics tools) by adding
         * information about the your application to outgoing requests.
         */
        clientAwareness?: ClientAwarenessLink.ClientAwarenessOptions;
        /**
         * Configures the "enhanced client awareness" feature.
         * This feature allows you to identify the version of the Apollo Client library
         * used in your application in Apollo Studio (and other monitoring or analytics tools)
         * by adding information about the Apollo Client library to outgoing requests.
         */
        enhancedClientAwareness?: ClientAwarenessLink.EnhancedClientAwarenessOptions;
    }
}
/**
 * `ClientAwarenessLink` provides support for providing client awareness
 * features.
 *
 * @remarks
 *
 * Client awareness adds identifying information about the client to HTTP
 * requests for use with metrics reporting tools, such as [Apollo GraphOS](https://apollographql.com/docs/graphos/platform).
 * It is included in the functionality of [`HttpLink`](https://apollographql.com/docs/react/api/link/apollo-link-http) by default.
 *
 * Client awareness distinguishes between user-provided client awareness
 * (provided by the `clientAwareness` option) and enhanced client awareness
 * (provided by the `enhancedClientAwareness` option). User-provided client
 * awareness enables you to set a customized client name and version for
 * identification in metrics reporting tools. Enhanced client awareness enables
 * the identification of the Apollo Client package name and version.
 *
 * @example
 *
 * ```ts
 * import { ClientAwarenessLink } from "@apollo/client/link/client-awareness";
 *
 * const link = new ClientAwarenessLink({
 *   clientAwareness: {
 *     name: "My Client",
 *     version: "1",
 *   },
 *   enhancedClientAwareness: {
 *     transport: "extensions",
 *   },
 * });
 * ```
 */
export declare class ClientAwarenessLink extends ApolloLink {
    constructor(options?: ClientAwarenessLink.Options);
}
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