initial vitepress site with basic nav

node_modules/@algolia/transporter/dist/transporter.cjs.js

@@ -0,0 +1,483 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var requesterCommon = require('@algolia/requester-common');
+
+function createMappedRequestOptions(requestOptions, timeout) {
+    const options = requestOptions || {};
+    const data = options.data || {};
+    Object.keys(options).forEach(key => {
+        if (['timeout', 'headers', 'queryParameters', 'data', 'cacheable'].indexOf(key) === -1) {
+            data[key] = options[key]; // eslint-disable-line functional/immutable-data
+        }
+    });
+    return {
+        data: Object.entries(data).length > 0 ? data : undefined,
+        timeout: options.timeout || timeout,
+        headers: options.headers || {},
+        queryParameters: options.queryParameters || {},
+        cacheable: options.cacheable,
+    };
+}
+
+const CallEnum = {
+    /**
+     * If the host is read only.
+     */
+    Read: 1,
+    /**
+     * If the host is write only.
+     */
+    Write: 2,
+    /**
+     * If the host is both read and write.
+     */
+    Any: 3,
+};
+
+const HostStatusEnum = {
+    Up: 1,
+    Down: 2,
+    Timeouted: 3,
+};
+
+// By default, API Clients at Algolia have expiration delay
+// of 5 mins. In the JavaScript client, we have 2 mins.
+const EXPIRATION_DELAY = 2 * 60 * 1000;
+function createStatefulHost(host, status = HostStatusEnum.Up) {
+    return {
+        ...host,
+        status,
+        lastUpdate: Date.now(),
+    };
+}
+function isStatefulHostUp(host) {
+    return host.status === HostStatusEnum.Up || Date.now() - host.lastUpdate > EXPIRATION_DELAY;
+}
+function isStatefulHostTimeouted(host) {
+    return (host.status === HostStatusEnum.Timeouted && Date.now() - host.lastUpdate <= EXPIRATION_DELAY);
+}
+
+function createStatelessHost(options) {
+    if (typeof options === 'string') {
+        return {
+            protocol: 'https',
+            url: options,
+            accept: CallEnum.Any,
+        };
+    }
+    return {
+        protocol: options.protocol || 'https',
+        url: options.url,
+        accept: options.accept || CallEnum.Any,
+    };
+}
+
+function createRetryableOptions(hostsCache, statelessHosts) {
+    return Promise.all(statelessHosts.map(statelessHost => {
+        return hostsCache.get(statelessHost, () => {
+            return Promise.resolve(createStatefulHost(statelessHost));
+        });
+    })).then(statefulHosts => {
+        const hostsUp = statefulHosts.filter(host => isStatefulHostUp(host));
+        const hostsTimeouted = statefulHosts.filter(host => isStatefulHostTimeouted(host));
+        /**
+         * Note, we put the hosts that previously timeouted on the end of the list.
+         */
+        const hostsAvailable = [...hostsUp, ...hostsTimeouted];
+        const statelessHostsAvailable = hostsAvailable.length > 0
+            ? hostsAvailable.map(host => createStatelessHost(host))
+            : statelessHosts;
+        return {
+            getTimeout(timeoutsCount, baseTimeout) {
+                /**
+                 * Imagine that you have 4 hosts, if timeouts will increase
+                 * on the following way: 1 (timeouted) > 4 (timeouted) > 5 (200)
+                 *
+                 * Note that, the very next request, we start from the previous timeout
+                 *
+                 *  5 (timeouted) > 6 (timeouted) > 7 ...
+                 *
+                 * This strategy may need to be reviewed, but is the strategy on the our
+                 * current v3 version.
+                 */
+                const timeoutMultiplier = hostsTimeouted.length === 0 && timeoutsCount === 0
+                    ? 1
+                    : hostsTimeouted.length + 3 + timeoutsCount;
+                return timeoutMultiplier * baseTimeout;
+            },
+            statelessHosts: statelessHostsAvailable,
+        };
+    });
+}
+
+const isNetworkError = ({ isTimedOut, status }) => {
+    return !isTimedOut && ~~status === 0;
+};
+const isRetryable = (response) => {
+    const status = response.status;
+    const isTimedOut = response.isTimedOut;
+    return (isTimedOut || isNetworkError(response) || (~~(status / 100) !== 2 && ~~(status / 100) !== 4));
+};
+const isSuccess = ({ status }) => {
+    return ~~(status / 100) === 2;
+};
+const retryDecision = (response, outcomes) => {
+    if (isRetryable(response)) {
+        return outcomes.onRetry(response);
+    }
+    if (isSuccess(response)) {
+        return outcomes.onSuccess(response);
+    }
+    return outcomes.onFail(response);
+};
+
+function retryableRequest(transporter, statelessHosts, request, requestOptions) {
+    const stackTrace = []; // eslint-disable-line functional/prefer-readonly-type
+    /**
+     * First we prepare the payload that do not depend from hosts.
+     */
+    const data = serializeData(request, requestOptions);
+    const headers = serializeHeaders(transporter, requestOptions);
+    const method = request.method;
+    // On `GET`, the data is proxied to query parameters.
+    const dataQueryParameters = request.method !== requesterCommon.MethodEnum.Get
+        ? {}
+        : {
+            ...request.data,
+            ...requestOptions.data,
+        };
+    const queryParameters = {
+        'x-algolia-agent': transporter.userAgent.value,
+        ...transporter.queryParameters,
+        ...dataQueryParameters,
+        ...requestOptions.queryParameters,
+    };
+    let timeoutsCount = 0; // eslint-disable-line functional/no-let
+    const retry = (hosts, // eslint-disable-line functional/prefer-readonly-type
+    getTimeout) => {
+        /**
+         * We iterate on each host, until there is no host left.
+         */
+        const host = hosts.pop(); // eslint-disable-line functional/immutable-data
+        if (host === undefined) {
+            throw createRetryError(stackTraceWithoutCredentials(stackTrace));
+        }
+        const payload = {
+            data,
+            headers,
+            method,
+            url: serializeUrl(host, request.path, queryParameters),
+            connectTimeout: getTimeout(timeoutsCount, transporter.timeouts.connect),
+            responseTimeout: getTimeout(timeoutsCount, requestOptions.timeout),
+        };
+        /**
+         * The stackFrame is pushed to the stackTrace so we
+         * can have information about onRetry and onFailure
+         * decisions.
+         */
+        const pushToStackTrace = (response) => {
+            const stackFrame = {
+                request: payload,
+                response,
+                host,
+                triesLeft: hosts.length,
+            };
+            // eslint-disable-next-line functional/immutable-data
+            stackTrace.push(stackFrame);
+            return stackFrame;
+        };
+        const decisions = {
+            onSuccess: response => deserializeSuccess(response),
+            onRetry(response) {
+                const stackFrame = pushToStackTrace(response);
+                /**
+                 * If response is a timeout, we increaset the number of
+                 * timeouts so we can increase the timeout later.
+                 */
+                if (response.isTimedOut) {
+                    timeoutsCount++;
+                }
+                return Promise.all([
+                    /**
+                     * Failures are individually send the logger, allowing
+                     * the end user to debug / store stack frames even
+                     * when a retry error does not happen.
+                     */
+                    transporter.logger.info('Retryable failure', stackFrameWithoutCredentials(stackFrame)),
+                    /**
+                     * We also store the state of the host in failure cases. If the host, is
+                     * down it will remain down for the next 2 minutes. In a timeout situation,
+                     * this host will be added end of the list of hosts on the next request.
+                     */
+                    transporter.hostsCache.set(host, createStatefulHost(host, response.isTimedOut ? HostStatusEnum.Timeouted : HostStatusEnum.Down)),
+                ]).then(() => retry(hosts, getTimeout));
+            },
+            onFail(response) {
+                pushToStackTrace(response);
+                throw deserializeFailure(response, stackTraceWithoutCredentials(stackTrace));
+            },
+        };
+        return transporter.requester.send(payload).then(response => {
+            return retryDecision(response, decisions);
+        });
+    };
+    /**
+     * Finally, for each retryable host perform request until we got a non
+     * retryable response. Some notes here:
+     *
+     * 1. The reverse here is applied so we can apply a `pop` later on => more performant.
+     * 2. We also get from the retryable options a timeout multiplier that is tailored
+     * for the current context.
+     */
+    return createRetryableOptions(transporter.hostsCache, statelessHosts).then(options => {
+        return retry([...options.statelessHosts].reverse(), options.getTimeout);
+    });
+}
+
+function createTransporter(options) {
+    const { hostsCache, logger, requester, requestsCache, responsesCache, timeouts, userAgent, hosts, queryParameters, headers, } = options;
+    const transporter = {
+        hostsCache,
+        logger,
+        requester,
+        requestsCache,
+        responsesCache,
+        timeouts,
+        userAgent,
+        headers,
+        queryParameters,
+        hosts: hosts.map(host => createStatelessHost(host)),
+        read(request, requestOptions) {
+            /**
+             * First, we compute the user request options. Now, keep in mind,
+             * that using request options the user is able to modified the intire
+             * payload of the request. Such as headers, query parameters, and others.
+             */
+            const mappedRequestOptions = createMappedRequestOptions(requestOptions, transporter.timeouts.read);
+            const createRetryableRequest = () => {
+                /**
+                 * Then, we prepare a function factory that contains the construction of
+                 * the retryable request. At this point, we may *not* perform the actual
+                 * request. But we want to have the function factory ready.
+                 */
+                return retryableRequest(transporter, transporter.hosts.filter(host => (host.accept & CallEnum.Read) !== 0), request, mappedRequestOptions);
+            };
+            /**
+             * Once we have the function factory ready, we need to determine of the
+             * request is "cacheable" - should be cached. Note that, once again,
+             * the user can force this option.
+             */
+            const cacheable = mappedRequestOptions.cacheable !== undefined
+                ? mappedRequestOptions.cacheable
+                : request.cacheable;
+            /**
+             * If is not "cacheable", we immediatly trigger the retryable request, no
+             * need to check cache implementations.
+             */
+            if (cacheable !== true) {
+                return createRetryableRequest();
+            }
+            /**
+             * If the request is "cacheable", we need to first compute the key to ask
+             * the cache implementations if this request is on progress or if the
+             * response already exists on the cache.
+             */
+            const key = {
+                request,
+                mappedRequestOptions,
+                transporter: {
+                    queryParameters: transporter.queryParameters,
+                    headers: transporter.headers,
+                },
+            };
+            /**
+             * With the computed key, we first ask the responses cache
+             * implemention if this request was been resolved before.
+             */
+            return transporter.responsesCache.get(key, () => {
+                /**
+                 * If the request has never resolved before, we actually ask if there
+                 * is a current request with the same key on progress.
+                 */
+                return transporter.requestsCache.get(key, () => {
+                    return (transporter.requestsCache
+                        /**
+                         * Finally, if there is no request in progress with the same key,
+                         * this `createRetryableRequest()` will actually trigger the
+                         * retryable request.
+                         */
+                        .set(key, createRetryableRequest())
+                        .then(response => Promise.all([transporter.requestsCache.delete(key), response]), err => Promise.all([transporter.requestsCache.delete(key), Promise.reject(err)]))
+                        .then(([_, response]) => response));
+                });
+            }, {
+                /**
+                 * Of course, once we get this response back from the server, we
+                 * tell response cache to actually store the received response
+                 * to be used later.
+                 */
+                miss: response => transporter.responsesCache.set(key, response),
+            });
+        },
+        write(request, requestOptions) {
+            /**
+             * On write requests, no cache mechanisms are applied, and we
+             * proxy the request immediately to the requester.
+             */
+            return retryableRequest(transporter, transporter.hosts.filter(host => (host.accept & CallEnum.Write) !== 0), request, createMappedRequestOptions(requestOptions, transporter.timeouts.write));
+        },
+    };
+    return transporter;
+}
+
+function createUserAgent(version) {
+    const userAgent = {
+        value: `Algolia for JavaScript (${version})`,
+        add(options) {
+            const addedUserAgent = `; ${options.segment}${options.version !== undefined ? ` (${options.version})` : ''}`;
+            if (userAgent.value.indexOf(addedUserAgent) === -1) {
+                // eslint-disable-next-line functional/immutable-data
+                userAgent.value = `${userAgent.value}${addedUserAgent}`;
+            }
+            return userAgent;
+        },
+    };
+    return userAgent;
+}
+
+function deserializeSuccess(response) {
+    // eslint-disable-next-line functional/no-try-statement
+    try {
+        return JSON.parse(response.content);
+    }
+    catch (e) {
+        throw createDeserializationError(e.message, response);
+    }
+}
+function deserializeFailure({ content, status }, stackFrame) {
+    // eslint-disable-next-line functional/no-let
+    let message = content;
+    // eslint-disable-next-line functional/no-try-statement
+    try {
+        message = JSON.parse(content).message;
+    }
+    catch (e) {
+        // ..
+    }
+    return createApiError(message, status, stackFrame);
+}
+
+// eslint-disable-next-line functional/prefer-readonly-type
+function encode(format, ...args) {
+    // eslint-disable-next-line functional/no-let
+    let i = 0;
+    return format.replace(/%s/g, () => encodeURIComponent(args[i++]));
+}
+
+function serializeUrl(host, path, queryParameters) {
+    const queryParametersAsString = serializeQueryParameters(queryParameters);
+    // eslint-disable-next-line functional/no-let
+    let url = `${host.protocol}://${host.url}/${path.charAt(0) === '/' ? path.substr(1) : path}`;
+    if (queryParametersAsString.length) {
+        url += `?${queryParametersAsString}`;
+    }
+    return url;
+}
+function serializeQueryParameters(parameters) {
+    const isObjectOrArray = (value) => Object.prototype.toString.call(value) === '[object Object]' ||
+        Object.prototype.toString.call(value) === '[object Array]';
+    return Object.keys(parameters)
+        .map(key => encode('%s=%s', key, isObjectOrArray(parameters[key]) ? JSON.stringify(parameters[key]) : parameters[key]))
+        .join('&');
+}
+function serializeData(request, requestOptions) {
+    if (request.method === requesterCommon.MethodEnum.Get ||
+        (request.data === undefined && requestOptions.data === undefined)) {
+        return undefined;
+    }
+    const data = Array.isArray(request.data)
+        ? request.data
+        : { ...request.data, ...requestOptions.data };
+    return JSON.stringify(data);
+}
+function serializeHeaders(transporter, requestOptions) {
+    const headers = {
+        ...transporter.headers,
+        ...requestOptions.headers,
+    };
+    const serializedHeaders = {};
+    Object.keys(headers).forEach(header => {
+        const value = headers[header];
+        // @ts-ignore
+        // eslint-disable-next-line functional/immutable-data
+        serializedHeaders[header.toLowerCase()] = value;
+    });
+    return serializedHeaders;
+}
+
+function stackTraceWithoutCredentials(stackTrace) {
+    return stackTrace.map(stackFrame => stackFrameWithoutCredentials(stackFrame));
+}
+function stackFrameWithoutCredentials(stackFrame) {
+    const modifiedHeaders = stackFrame.request.headers['x-algolia-api-key']
+        ? { 'x-algolia-api-key': '*****' }
+        : {};
+    return {
+        ...stackFrame,
+        request: {
+            ...stackFrame.request,
+            headers: {
+                ...stackFrame.request.headers,
+                ...modifiedHeaders,
+            },
+        },
+    };
+}
+
+function createApiError(message, status, transporterStackTrace) {
+    return {
+        name: 'ApiError',
+        message,
+        status,
+        transporterStackTrace,
+    };
+}
+
+function createDeserializationError(message, response) {
+    return {
+        name: 'DeserializationError',
+        message,
+        response,
+    };
+}
+
+function createRetryError(transporterStackTrace) {
+    return {
+        name: 'RetryError',
+        message: 'Unreachable hosts - your application id may be incorrect. If the error persists, contact support@algolia.com.',
+        transporterStackTrace,
+    };
+}
+
+exports.CallEnum = CallEnum;
+exports.HostStatusEnum = HostStatusEnum;
+exports.createApiError = createApiError;
+exports.createDeserializationError = createDeserializationError;
+exports.createMappedRequestOptions = createMappedRequestOptions;
+exports.createRetryError = createRetryError;
+exports.createStatefulHost = createStatefulHost;
+exports.createStatelessHost = createStatelessHost;
+exports.createTransporter = createTransporter;
+exports.createUserAgent = createUserAgent;
+exports.deserializeFailure = deserializeFailure;
+exports.deserializeSuccess = deserializeSuccess;
+exports.isStatefulHostTimeouted = isStatefulHostTimeouted;
+exports.isStatefulHostUp = isStatefulHostUp;
+exports.serializeData = serializeData;
+exports.serializeHeaders = serializeHeaders;
+exports.serializeQueryParameters = serializeQueryParameters;
+exports.serializeUrl = serializeUrl;
+exports.stackFrameWithoutCredentials = stackFrameWithoutCredentials;
+exports.stackTraceWithoutCredentials = stackTraceWithoutCredentials;

node_modules/@algolia/transporter/dist/transporter.d.ts

@@ -0,0 +1,381 @@
+import { Cache } from '@algolia/cache-common';
+import { Logger } from '@algolia/logger-common';
+import { MethodType } from '@algolia/requester-common';
+import { Request as Request_2 } from '@algolia/requester-common';
+import { Requester } from '@algolia/requester-common';
+import { Response } from '@algolia/requester-common';
+
+export declare type ApiError = Error & {
+    /**
+     * The http status code.
+     */
+    readonly status: number;
+    /**
+     * Contains report of stack frames of the
+     * execution of a certain request.
+     */
+    readonly transporterStackTrace: readonly StackFrame[];
+};
+
+export declare const CallEnum: Readonly<Record<string, CallType>>;
+
+export declare type CallType = 1 | 2 | 3;
+
+export declare function createApiError(message: string, status: number, transporterStackTrace: readonly StackFrame[]): ApiError;
+
+export declare function createDeserializationError(message: string, response: Response): DeserializationError;
+
+export declare function createMappedRequestOptions(requestOptions?: RequestOptions, timeout?: number): MappedRequestOptions;
+
+export declare function createRetryError(transporterStackTrace: readonly StackFrame[]): RetryError;
+
+export declare function createStatefulHost(host: StatelessHost, status?: HostStatusType): StatefulHost;
+
+export declare function createStatelessHost(options: HostOptions): StatelessHost;
+
+export declare function createTransporter(options: TransporterOptions): Transporter;
+
+export declare function createUserAgent(version: string): UserAgent;
+
+export declare type DeserializationError = Error & {
+    /**
+     * The raw response from the server.
+     */
+    readonly response: Response;
+};
+
+export declare function deserializeFailure({ content, status }: Response, stackFrame: readonly StackFrame[]): Error;
+
+export declare function deserializeSuccess<TObject>(response: Response): TObject;
+
+export declare type Headers = Readonly<Record<string, string>>;
+
+export declare type HostOptions = string | {
+    /**
+     * The url of the server, without the protocol.
+     */
+    readonly url: string;
+    /**
+     * The type of host. Defaults to `Any`.
+     */
+    readonly accept?: CallType;
+    /**
+     * The protocol. Defaults to `https`.
+     */
+    readonly protocol?: string;
+};
+
+export declare const HostStatusEnum: Readonly<Record<string, HostStatusType>>;
+
+export declare type HostStatusType = 1 | 2 | 3;
+
+export declare function isStatefulHostTimeouted(host: StatefulHost): boolean;
+
+export declare function isStatefulHostUp(host: StatefulHost): boolean;
+
+export declare type MappedRequestOptions = {
+    /**
+     * If the request should be cached.
+     */
+    readonly cacheable: boolean | undefined;
+    /**
+     * The `read` or `write` timeout of the request.
+     */
+    readonly timeout: number | undefined;
+    /**
+     * The headers of the request.
+     */
+    readonly headers: Record<string, string>;
+    /**
+     * The query parameters of the request.
+     */
+    readonly queryParameters: Record<string, any>;
+    /**
+     * The data to be transfered to the server.
+     */
+    readonly data?: Record<string, string>;
+};
+
+export declare type QueryParameters = Readonly<Record<string, string>>;
+
+export declare type Request = {
+    /**
+     * The method of the request. `GET`, etc.
+     */
+    readonly method: MethodType;
+    /**
+     * The path of the request. i.e: `/1/indexes`.
+     */
+    readonly path: string;
+    /**
+     * The data to transfer to the server.
+     */
+    readonly data?: Record<string, any> | ReadonlyArray<Record<string, any>>;
+    /**
+     * If the response should persist on cache.
+     */
+    readonly cacheable?: boolean;
+};
+
+export declare type RequestOptions = {
+    /**
+     * If the given request should persist on the cache. Keep in mind,
+     * that some methods may have this option enabled by default.
+     */
+    readonly cacheable?: boolean;
+    /**
+     * Custom timeout for the request. Note that, in normal situacions
+     * the given timeout will be applied. But the transporter layer may
+     * increase this timeout if there is need for it.
+     */
+    readonly timeout?: number;
+    /**
+     * Custom headers for the request. This headers are
+     * going to be merged the transporter headers.
+     */
+    readonly headers?: Readonly<Record<string, string>>;
+    /**
+     * Custom query parameters for the request. This query parameters are
+     * going to be merged the transporter query parameters.
+     */
+    readonly queryParameters?: Record<string, any>;
+    /**
+     * Custom data for the request. This data are
+     * going to be merged the transporter data.
+     */
+    readonly data?: Record<string, any>;
+    /**
+     * Additional request body values. It's only taken in
+     * consideration in `POST` and `PUT` requests.
+     */
+    [key: string]: any;
+};
+
+export declare type RetryError = Error & {
+    /**
+     * Contains report of stack frames of the
+     * execution of a certain request.
+     */
+    readonly transporterStackTrace: readonly StackFrame[];
+};
+
+export declare function serializeData(request: Request, requestOptions: RequestOptions): string | undefined;
+
+export declare function serializeHeaders(transporter: Transporter, requestOptions: RequestOptions): Headers;
+
+export declare function serializeQueryParameters(parameters: Readonly<Record<string, any>>): string;
+
+export declare function serializeUrl(host: StatelessHost, path: string, queryParameters: Readonly<Record<string, string>>): string;
+
+export declare type StackFrame = {
+    /**
+     * The request made.
+     */
+    readonly request: Request_2;
+    /**
+     * The received response.
+     */
+    readonly response: Response;
+    /**
+     * The host associated with the `request` and the `response`.
+     */
+    readonly host: StatelessHost;
+    /**
+     * The number of tries left.
+     */
+    readonly triesLeft: number;
+};
+
+export declare function stackFrameWithoutCredentials(stackFrame: StackFrame): StackFrame;
+
+export declare function stackTraceWithoutCredentials(stackTrace: readonly StackFrame[]): readonly StackFrame[];
+
+export declare type StatefulHost = StatelessHost & {
+    /**
+     * Holds the last time this host failed in milliseconds elapsed
+     * since the UNIX epoch. This failure can be because of an
+     * timeout error or a because the host is not available.
+     */
+    readonly lastUpdate: number;
+    /**
+     * Holds the host status. Note that, depending of the `lastUpdate`
+     * an host may be considered as `Up` on the transporter layer.
+     */
+    readonly status: HostStatusType;
+};
+
+export declare type StatelessHost = {
+    /**
+     * The protocol of the stateless host. Between `http` and `https`.
+     */
+    readonly protocol: string;
+    /**
+     * The url, without protocol.
+     */
+    readonly url: string;
+    /**
+     * The type of the host.
+     */
+    readonly accept: CallType;
+};
+
+export declare type Timeouts = {
+    /**
+     * The timeout to stablish a connection with the server.
+     */
+    readonly connect: number;
+    /**
+     * The timeout to receive the response on read requests.
+     */
+    readonly read: number;
+    /**
+     * The timeout to receive the response on write requests.
+     */
+    readonly write: number;
+};
+
+export declare type Transporter = {
+    /**
+     * The cache of the hosts. Usually used to persist
+     * the state of the host when its down.
+     */
+    readonly hostsCache: Cache;
+    /**
+     * The logger instance to send events of the transporter.
+     */
+    readonly logger: Logger;
+    /**
+     * The underlying requester used. Should differ
+     * depending of the enviroment where the client
+     * will be used.
+     */
+    readonly requester: Requester;
+    /**
+     * The cache of the requests. When requests are
+     * `cacheable`, the returned promised persists
+     * in this cache to shared in similar resquests
+     * before being resolved.
+     */
+    readonly requestsCache: Cache;
+    /**
+     * The cache of the responses. When requests are
+     * `cacheable`, the returned responses persists
+     * in this cache to shared in similar resquests.
+     */
+    readonly responsesCache: Cache;
+    /**
+     * The timeouts used by the requester. The transporter
+     * layer may increase this timeouts as defined on the
+     * retry strategy.
+     */
+    readonly timeouts: Timeouts;
+    /**
+     * The user agent used. Sent on query parameters.
+     */
+    readonly userAgent: UserAgent;
+    /**
+     * The headers used on each request.
+     */
+    readonly headers: Headers;
+    /**
+     * The query parameters used on each request.
+     */
+    readonly queryParameters: QueryParameters;
+    /**
+     * The hosts used by the retry strategy.
+     *
+     * @readonly
+     */
+    hosts: readonly StatelessHost[];
+    /**
+     * Performs a read request using read hosts.
+     */
+    readonly read: <TResponse>(request: Request, requestOptions?: RequestOptions) => Readonly<Promise<TResponse>>;
+    /**
+     * Performs a write request using write hosts.
+     */
+    readonly write: <TResponse>(request: Request, requestOptions?: RequestOptions) => Readonly<Promise<TResponse>>;
+};
+
+export declare type TransporterOptions = {
+    /**
+     * The cache of the hosts. Usually used to persist
+     * the state of the host when its down.
+     */
+    readonly hostsCache: Cache;
+    /**
+     * The logger instance to send events of the transporter.
+     */
+    readonly logger: Logger;
+    /**
+     * The underlying requester used. Should differ
+     * depending of the enviroment where the client
+     * will be used.
+     */
+    readonly requester: Requester;
+    /**
+     * The cache of the requests. When requests are
+     * `cacheable`, the returned promised persists
+     * in this cache to shared in similar resquests
+     * before being resolved.
+     */
+    readonly requestsCache: Cache;
+    /**
+     * The cache of the responses. When requests are
+     * `cacheable`, the returned responses persists
+     * in this cache to shared in similar resquests.
+     */
+    readonly responsesCache: Cache;
+    /**
+     * The timeouts used by the requester. The transporter
+     * layer may increase this timeouts as defined on the
+     * retry strategy.
+     */
+    readonly timeouts: Timeouts;
+    /**
+     * The hosts used by the requester.
+     */
+    readonly hosts: readonly HostOptions[];
+    /**
+     * The headers used by the requester. The transporter
+     * layer may add some extra headers during the request
+     * for the user agent, and others.
+     */
+    readonly headers: Headers;
+    /**
+     * The query parameters used by the requester. The transporter
+     * layer may add some extra headers during the request
+     * for the user agent, and others.
+     */
+    readonly queryParameters: QueryParameters;
+    /**
+     * The user agent used. Sent on query parameters.
+     */
+    readonly userAgent: UserAgent;
+};
+
+export declare type UserAgent = {
+    /**
+     * The raw value of the user agent.
+     *
+     * @readonly
+     */
+    value: string;
+    /**
+     * Mutates the current user agent ading the given user agent options.
+     */
+    readonly add: (options: UserAgentOptions) => UserAgent;
+};
+
+export declare type UserAgentOptions = {
+    /**
+     * The segment. Usually the integration name.
+     */
+    readonly segment: string;
+    /**
+     * The version. Usually the integration version.
+     */
+    readonly version?: string;
+};
+
+export { }

node_modules/@algolia/transporter/dist/transporter.esm.js

@@ -0,0 +1,460 @@
+import { MethodEnum } from '@algolia/requester-common';
+
+function createMappedRequestOptions(requestOptions, timeout) {
+    const options = requestOptions || {};
+    const data = options.data || {};
+    Object.keys(options).forEach(key => {
+        if (['timeout', 'headers', 'queryParameters', 'data', 'cacheable'].indexOf(key) === -1) {
+            data[key] = options[key]; // eslint-disable-line functional/immutable-data
+        }
+    });
+    return {
+        data: Object.entries(data).length > 0 ? data : undefined,
+        timeout: options.timeout || timeout,
+        headers: options.headers || {},
+        queryParameters: options.queryParameters || {},
+        cacheable: options.cacheable,
+    };
+}
+
+const CallEnum = {
+    /**
+     * If the host is read only.
+     */
+    Read: 1,
+    /**
+     * If the host is write only.
+     */
+    Write: 2,
+    /**
+     * If the host is both read and write.
+     */
+    Any: 3,
+};
+
+const HostStatusEnum = {
+    Up: 1,
+    Down: 2,
+    Timeouted: 3,
+};
+
+// By default, API Clients at Algolia have expiration delay
+// of 5 mins. In the JavaScript client, we have 2 mins.
+const EXPIRATION_DELAY = 2 * 60 * 1000;
+function createStatefulHost(host, status = HostStatusEnum.Up) {
+    return {
+        ...host,
+        status,
+        lastUpdate: Date.now(),
+    };
+}
+function isStatefulHostUp(host) {
+    return host.status === HostStatusEnum.Up || Date.now() - host.lastUpdate > EXPIRATION_DELAY;
+}
+function isStatefulHostTimeouted(host) {
+    return (host.status === HostStatusEnum.Timeouted && Date.now() - host.lastUpdate <= EXPIRATION_DELAY);
+}
+
+function createStatelessHost(options) {
+    if (typeof options === 'string') {
+        return {
+            protocol: 'https',
+            url: options,
+            accept: CallEnum.Any,
+        };
+    }
+    return {
+        protocol: options.protocol || 'https',
+        url: options.url,
+        accept: options.accept || CallEnum.Any,
+    };
+}
+
+function createRetryableOptions(hostsCache, statelessHosts) {
+    return Promise.all(statelessHosts.map(statelessHost => {
+        return hostsCache.get(statelessHost, () => {
+            return Promise.resolve(createStatefulHost(statelessHost));
+        });
+    })).then(statefulHosts => {
+        const hostsUp = statefulHosts.filter(host => isStatefulHostUp(host));
+        const hostsTimeouted = statefulHosts.filter(host => isStatefulHostTimeouted(host));
+        /**
+         * Note, we put the hosts that previously timeouted on the end of the list.
+         */
+        const hostsAvailable = [...hostsUp, ...hostsTimeouted];
+        const statelessHostsAvailable = hostsAvailable.length > 0
+            ? hostsAvailable.map(host => createStatelessHost(host))
+            : statelessHosts;
+        return {
+            getTimeout(timeoutsCount, baseTimeout) {
+                /**
+                 * Imagine that you have 4 hosts, if timeouts will increase
+                 * on the following way: 1 (timeouted) > 4 (timeouted) > 5 (200)
+                 *
+                 * Note that, the very next request, we start from the previous timeout
+                 *
+                 *  5 (timeouted) > 6 (timeouted) > 7 ...
+                 *
+                 * This strategy may need to be reviewed, but is the strategy on the our
+                 * current v3 version.
+                 */
+                const timeoutMultiplier = hostsTimeouted.length === 0 && timeoutsCount === 0
+                    ? 1
+                    : hostsTimeouted.length + 3 + timeoutsCount;
+                return timeoutMultiplier * baseTimeout;
+            },
+            statelessHosts: statelessHostsAvailable,
+        };
+    });
+}
+
+const isNetworkError = ({ isTimedOut, status }) => {
+    return !isTimedOut && ~~status === 0;
+};
+const isRetryable = (response) => {
+    const status = response.status;
+    const isTimedOut = response.isTimedOut;
+    return (isTimedOut || isNetworkError(response) || (~~(status / 100) !== 2 && ~~(status / 100) !== 4));
+};
+const isSuccess = ({ status }) => {
+    return ~~(status / 100) === 2;
+};
+const retryDecision = (response, outcomes) => {
+    if (isRetryable(response)) {
+        return outcomes.onRetry(response);
+    }
+    if (isSuccess(response)) {
+        return outcomes.onSuccess(response);
+    }
+    return outcomes.onFail(response);
+};
+
+function retryableRequest(transporter, statelessHosts, request, requestOptions) {
+    const stackTrace = []; // eslint-disable-line functional/prefer-readonly-type
+    /**
+     * First we prepare the payload that do not depend from hosts.
+     */
+    const data = serializeData(request, requestOptions);
+    const headers = serializeHeaders(transporter, requestOptions);
+    const method = request.method;
+    // On `GET`, the data is proxied to query parameters.
+    const dataQueryParameters = request.method !== MethodEnum.Get
+        ? {}
+        : {
+            ...request.data,
+            ...requestOptions.data,
+        };
+    const queryParameters = {
+        'x-algolia-agent': transporter.userAgent.value,
+        ...transporter.queryParameters,
+        ...dataQueryParameters,
+        ...requestOptions.queryParameters,
+    };
+    let timeoutsCount = 0; // eslint-disable-line functional/no-let
+    const retry = (hosts, // eslint-disable-line functional/prefer-readonly-type
+    getTimeout) => {
+        /**
+         * We iterate on each host, until there is no host left.
+         */
+        const host = hosts.pop(); // eslint-disable-line functional/immutable-data
+        if (host === undefined) {
+            throw createRetryError(stackTraceWithoutCredentials(stackTrace));
+        }
+        const payload = {
+            data,
+            headers,
+            method,
+            url: serializeUrl(host, request.path, queryParameters),
+            connectTimeout: getTimeout(timeoutsCount, transporter.timeouts.connect),
+            responseTimeout: getTimeout(timeoutsCount, requestOptions.timeout),
+        };
+        /**
+         * The stackFrame is pushed to the stackTrace so we
+         * can have information about onRetry and onFailure
+         * decisions.
+         */
+        const pushToStackTrace = (response) => {
+            const stackFrame = {
+                request: payload,
+                response,
+                host,
+                triesLeft: hosts.length,
+            };
+            // eslint-disable-next-line functional/immutable-data
+            stackTrace.push(stackFrame);
+            return stackFrame;
+        };
+        const decisions = {
+            onSuccess: response => deserializeSuccess(response),
+            onRetry(response) {
+                const stackFrame = pushToStackTrace(response);
+                /**
+                 * If response is a timeout, we increaset the number of
+                 * timeouts so we can increase the timeout later.
+                 */
+                if (response.isTimedOut) {
+                    timeoutsCount++;
+                }
+                return Promise.all([
+                    /**
+                     * Failures are individually send the logger, allowing
+                     * the end user to debug / store stack frames even
+                     * when a retry error does not happen.
+                     */
+                    transporter.logger.info('Retryable failure', stackFrameWithoutCredentials(stackFrame)),
+                    /**
+                     * We also store the state of the host in failure cases. If the host, is
+                     * down it will remain down for the next 2 minutes. In a timeout situation,
+                     * this host will be added end of the list of hosts on the next request.
+                     */
+                    transporter.hostsCache.set(host, createStatefulHost(host, response.isTimedOut ? HostStatusEnum.Timeouted : HostStatusEnum.Down)),
+                ]).then(() => retry(hosts, getTimeout));
+            },
+            onFail(response) {
+                pushToStackTrace(response);
+                throw deserializeFailure(response, stackTraceWithoutCredentials(stackTrace));
+            },
+        };
+        return transporter.requester.send(payload).then(response => {
+            return retryDecision(response, decisions);
+        });
+    };
+    /**
+     * Finally, for each retryable host perform request until we got a non
+     * retryable response. Some notes here:
+     *
+     * 1. The reverse here is applied so we can apply a `pop` later on => more performant.
+     * 2. We also get from the retryable options a timeout multiplier that is tailored
+     * for the current context.
+     */
+    return createRetryableOptions(transporter.hostsCache, statelessHosts).then(options => {
+        return retry([...options.statelessHosts].reverse(), options.getTimeout);
+    });
+}
+
+function createTransporter(options) {
+    const { hostsCache, logger, requester, requestsCache, responsesCache, timeouts, userAgent, hosts, queryParameters, headers, } = options;
+    const transporter = {
+        hostsCache,
+        logger,
+        requester,
+        requestsCache,
+        responsesCache,
+        timeouts,
+        userAgent,
+        headers,
+        queryParameters,
+        hosts: hosts.map(host => createStatelessHost(host)),
+        read(request, requestOptions) {
+            /**
+             * First, we compute the user request options. Now, keep in mind,
+             * that using request options the user is able to modified the intire
+             * payload of the request. Such as headers, query parameters, and others.
+             */
+            const mappedRequestOptions = createMappedRequestOptions(requestOptions, transporter.timeouts.read);
+            const createRetryableRequest = () => {
+                /**
+                 * Then, we prepare a function factory that contains the construction of
+                 * the retryable request. At this point, we may *not* perform the actual
+                 * request. But we want to have the function factory ready.
+                 */
+                return retryableRequest(transporter, transporter.hosts.filter(host => (host.accept & CallEnum.Read) !== 0), request, mappedRequestOptions);
+            };
+            /**
+             * Once we have the function factory ready, we need to determine of the
+             * request is "cacheable" - should be cached. Note that, once again,
+             * the user can force this option.
+             */
+            const cacheable = mappedRequestOptions.cacheable !== undefined
+                ? mappedRequestOptions.cacheable
+                : request.cacheable;
+            /**
+             * If is not "cacheable", we immediatly trigger the retryable request, no
+             * need to check cache implementations.
+             */
+            if (cacheable !== true) {
+                return createRetryableRequest();
+            }
+            /**
+             * If the request is "cacheable", we need to first compute the key to ask
+             * the cache implementations if this request is on progress or if the
+             * response already exists on the cache.
+             */
+            const key = {
+                request,
+                mappedRequestOptions,
+                transporter: {
+                    queryParameters: transporter.queryParameters,
+                    headers: transporter.headers,
+                },
+            };
+            /**
+             * With the computed key, we first ask the responses cache
+             * implemention if this request was been resolved before.
+             */
+            return transporter.responsesCache.get(key, () => {
+                /**
+                 * If the request has never resolved before, we actually ask if there
+                 * is a current request with the same key on progress.
+                 */
+                return transporter.requestsCache.get(key, () => {
+                    return (transporter.requestsCache
+                        /**
+                         * Finally, if there is no request in progress with the same key,
+                         * this `createRetryableRequest()` will actually trigger the
+                         * retryable request.
+                         */
+                        .set(key, createRetryableRequest())
+                        .then(response => Promise.all([transporter.requestsCache.delete(key), response]), err => Promise.all([transporter.requestsCache.delete(key), Promise.reject(err)]))
+                        .then(([_, response]) => response));
+                });
+            }, {
+                /**
+                 * Of course, once we get this response back from the server, we
+                 * tell response cache to actually store the received response
+                 * to be used later.
+                 */
+                miss: response => transporter.responsesCache.set(key, response),
+            });
+        },
+        write(request, requestOptions) {
+            /**
+             * On write requests, no cache mechanisms are applied, and we
+             * proxy the request immediately to the requester.
+             */
+            return retryableRequest(transporter, transporter.hosts.filter(host => (host.accept & CallEnum.Write) !== 0), request, createMappedRequestOptions(requestOptions, transporter.timeouts.write));
+        },
+    };
+    return transporter;
+}
+
+function createUserAgent(version) {
+    const userAgent = {
+        value: `Algolia for JavaScript (${version})`,
+        add(options) {
+            const addedUserAgent = `; ${options.segment}${options.version !== undefined ? ` (${options.version})` : ''}`;
+            if (userAgent.value.indexOf(addedUserAgent) === -1) {
+                // eslint-disable-next-line functional/immutable-data
+                userAgent.value = `${userAgent.value}${addedUserAgent}`;
+            }
+            return userAgent;
+        },
+    };
+    return userAgent;
+}
+
+function deserializeSuccess(response) {
+    // eslint-disable-next-line functional/no-try-statement
+    try {
+        return JSON.parse(response.content);
+    }
+    catch (e) {
+        throw createDeserializationError(e.message, response);
+    }
+}
+function deserializeFailure({ content, status }, stackFrame) {
+    // eslint-disable-next-line functional/no-let
+    let message = content;
+    // eslint-disable-next-line functional/no-try-statement
+    try {
+        message = JSON.parse(content).message;
+    }
+    catch (e) {
+        // ..
+    }
+    return createApiError(message, status, stackFrame);
+}
+
+// eslint-disable-next-line functional/prefer-readonly-type
+function encode(format, ...args) {
+    // eslint-disable-next-line functional/no-let
+    let i = 0;
+    return format.replace(/%s/g, () => encodeURIComponent(args[i++]));
+}
+
+function serializeUrl(host, path, queryParameters) {
+    const queryParametersAsString = serializeQueryParameters(queryParameters);
+    // eslint-disable-next-line functional/no-let
+    let url = `${host.protocol}://${host.url}/${path.charAt(0) === '/' ? path.substr(1) : path}`;
+    if (queryParametersAsString.length) {
+        url += `?${queryParametersAsString}`;
+    }
+    return url;
+}
+function serializeQueryParameters(parameters) {
+    const isObjectOrArray = (value) => Object.prototype.toString.call(value) === '[object Object]' ||
+        Object.prototype.toString.call(value) === '[object Array]';
+    return Object.keys(parameters)
+        .map(key => encode('%s=%s', key, isObjectOrArray(parameters[key]) ? JSON.stringify(parameters[key]) : parameters[key]))
+        .join('&');
+}
+function serializeData(request, requestOptions) {
+    if (request.method === MethodEnum.Get ||
+        (request.data === undefined && requestOptions.data === undefined)) {
+        return undefined;
+    }
+    const data = Array.isArray(request.data)
+        ? request.data
+        : { ...request.data, ...requestOptions.data };
+    return JSON.stringify(data);
+}
+function serializeHeaders(transporter, requestOptions) {
+    const headers = {
+        ...transporter.headers,
+        ...requestOptions.headers,
+    };
+    const serializedHeaders = {};
+    Object.keys(headers).forEach(header => {
+        const value = headers[header];
+        // @ts-ignore
+        // eslint-disable-next-line functional/immutable-data
+        serializedHeaders[header.toLowerCase()] = value;
+    });
+    return serializedHeaders;
+}
+
+function stackTraceWithoutCredentials(stackTrace) {
+    return stackTrace.map(stackFrame => stackFrameWithoutCredentials(stackFrame));
+}
+function stackFrameWithoutCredentials(stackFrame) {
+    const modifiedHeaders = stackFrame.request.headers['x-algolia-api-key']
+        ? { 'x-algolia-api-key': '*****' }
+        : {};
+    return {
+        ...stackFrame,
+        request: {
+            ...stackFrame.request,
+            headers: {
+                ...stackFrame.request.headers,
+                ...modifiedHeaders,
+            },
+        },
+    };
+}
+
+function createApiError(message, status, transporterStackTrace) {
+    return {
+        name: 'ApiError',
+        message,
+        status,
+        transporterStackTrace,
+    };
+}
+
+function createDeserializationError(message, response) {
+    return {
+        name: 'DeserializationError',
+        message,
+        response,
+    };
+}
+
+function createRetryError(transporterStackTrace) {
+    return {
+        name: 'RetryError',
+        message: 'Unreachable hosts - your application id may be incorrect. If the error persists, contact support@algolia.com.',
+        transporterStackTrace,
+    };
+}
+
+export { CallEnum, HostStatusEnum, createApiError, createDeserializationError, createMappedRequestOptions, createRetryError, createStatefulHost, createStatelessHost, createTransporter, createUserAgent, deserializeFailure, deserializeSuccess, isStatefulHostTimeouted, isStatefulHostUp, serializeData, serializeHeaders, serializeQueryParameters, serializeUrl, stackFrameWithoutCredentials, stackTraceWithoutCredentials };