setup-cpp/patches/@actions__http-client@2.2.3.patch

diff --git a/lib/esnext/auth.d.ts b/lib/esnext/auth.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8cc9fc3d872704e3f2813845568a1b620e7d0513
--- /dev/null
+++ b/lib/esnext/auth.d.ts
@@ -0,0 +1,26 @@
+/// <reference types="node" />
+import * as http from 'http';
+import * as ifm from './interfaces';
+import { HttpClientResponse } from './index';
+export declare class BasicCredentialHandler implements ifm.RequestHandler {
+    username: string;
+    password: string;
+    constructor(username: string, password: string);
+    prepareRequest(options: http.RequestOptions): void;
+    canHandleAuthentication(): boolean;
+    handleAuthentication(): Promise<HttpClientResponse>;
+}
+export declare class BearerCredentialHandler implements ifm.RequestHandler {
+    token: string;
+    constructor(token: string);
+    prepareRequest(options: http.RequestOptions): void;
+    canHandleAuthentication(): boolean;
+    handleAuthentication(): Promise<HttpClientResponse>;
+}
+export declare class PersonalAccessTokenCredentialHandler implements ifm.RequestHandler {
+    token: string;
+    constructor(token: string);
+    prepareRequest(options: http.RequestOptions): void;
+    canHandleAuthentication(): boolean;
+    handleAuthentication(): Promise<HttpClientResponse>;
+}
diff --git a/lib/esnext/auth.js b/lib/esnext/auth.js
new file mode 100644
index 0000000000000000000000000000000000000000..e6462aa36d45a45eea1b81da19e3f1321fdd39b7
--- /dev/null
+++ b/lib/esnext/auth.js
@@ -0,0 +1,64 @@
+export class BasicCredentialHandler {
+    username;
+    password;
+    constructor(username, password) {
+        this.username = username;
+        this.password = password;
+    }
+    prepareRequest(options) {
+        if (!options.headers) {
+            throw Error('The request has no headers');
+        }
+        options.headers['Authorization'] = `Basic ${Buffer.from(`${this.username}:${this.password}`).toString('base64')}`;
+    }
+    // This handler cannot handle 401
+    canHandleAuthentication() {
+        return false;
+    }
+    async handleAuthentication() {
+        throw new Error('not implemented');
+    }
+}
+export class BearerCredentialHandler {
+    token;
+    constructor(token) {
+        this.token = token;
+    }
+    // currently implements pre-authorization
+    // TODO: support preAuth = false where it hooks on 401
+    prepareRequest(options) {
+        if (!options.headers) {
+            throw Error('The request has no headers');
+        }
+        options.headers['Authorization'] = `Bearer ${this.token}`;
+    }
+    // This handler cannot handle 401
+    canHandleAuthentication() {
+        return false;
+    }
+    async handleAuthentication() {
+        throw new Error('not implemented');
+    }
+}
+export class PersonalAccessTokenCredentialHandler {
+    token;
+    constructor(token) {
+        this.token = token;
+    }
+    // currently implements pre-authorization
+    // TODO: support preAuth = false where it hooks on 401
+    prepareRequest(options) {
+        if (!options.headers) {
+            throw Error('The request has no headers');
+        }
+        options.headers['Authorization'] = `Basic ${Buffer.from(`PAT:${this.token}`).toString('base64')}`;
+    }
+    // This handler cannot handle 401
+    canHandleAuthentication() {
+        return false;
+    }
+    async handleAuthentication() {
+        throw new Error('not implemented');
+    }
+}
+//# sourceMappingURL=auth.js.map
\ No newline at end of file
diff --git a/lib/esnext/auth.js.map b/lib/esnext/auth.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..59d82192ac306cec208bb4ded448cfe28f049a04
--- /dev/null
+++ b/lib/esnext/auth.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"auth.js","sourceRoot":"","sources":["../../src/auth.ts"],"names":[],"mappings":"AAIA,MAAM,OAAO,sBAAsB;IACjC,QAAQ,CAAQ;IAChB,QAAQ,CAAQ;IAEhB,YAAY,QAAgB,EAAE,QAAgB;QAC5C,IAAI,CAAC,QAAQ,GAAG,QAAQ,CAAA;QACxB,IAAI,CAAC,QAAQ,GAAG,QAAQ,CAAA;IAC1B,CAAC;IAED,cAAc,CAAC,OAA4B;QACzC,IAAI,CAAC,OAAO,CAAC,OAAO,EAAE;YACpB,MAAM,KAAK,CAAC,4BAA4B,CAAC,CAAA;SAC1C;QACD,OAAO,CAAC,OAAO,CAAC,eAAe,CAAC,GAAG,SAAS,MAAM,CAAC,IAAI,CACrD,GAAG,IAAI,CAAC,QAAQ,IAAI,IAAI,CAAC,QAAQ,EAAE,CACpC,CAAC,QAAQ,CAAC,QAAQ,CAAC,EAAE,CAAA;IACxB,CAAC;IAED,iCAAiC;IACjC,uBAAuB;QACrB,OAAO,KAAK,CAAA;IACd,CAAC;IAED,KAAK,CAAC,oBAAoB;QACxB,MAAM,IAAI,KAAK,CAAC,iBAAiB,CAAC,CAAA;IACpC,CAAC;CACF;AAED,MAAM,OAAO,uBAAuB;IAClC,KAAK,CAAQ;IAEb,YAAY,KAAa;QACvB,IAAI,CAAC,KAAK,GAAG,KAAK,CAAA;IACpB,CAAC;IAED,yCAAyC;IACzC,sDAAsD;IACtD,cAAc,CAAC,OAA4B;QACzC,IAAI,CAAC,OAAO,CAAC,OAAO,EAAE;YACpB,MAAM,KAAK,CAAC,4BAA4B,CAAC,CAAA;SAC1C;QACD,OAAO,CAAC,OAAO,CAAC,eAAe,CAAC,GAAG,UAAU,IAAI,CAAC,KAAK,EAAE,CAAA;IAC3D,CAAC;IAED,iCAAiC;IACjC,uBAAuB;QACrB,OAAO,KAAK,CAAA;IACd,CAAC;IAED,KAAK,CAAC,oBAAoB;QACxB,MAAM,IAAI,KAAK,CAAC,iBAAiB,CAAC,CAAA;IACpC,CAAC;CACF;AAED,MAAM,OAAO,oCAAoC;IAG/C,KAAK,CAAQ;IAEb,YAAY,KAAa;QACvB,IAAI,CAAC,KAAK,GAAG,KAAK,CAAA;IACpB,CAAC;IAED,yCAAyC;IACzC,sDAAsD;IACtD,cAAc,CAAC,OAA4B;QACzC,IAAI,CAAC,OAAO,CAAC,OAAO,EAAE;YACpB,MAAM,KAAK,CAAC,4BAA4B,CAAC,CAAA;SAC1C;QACD,OAAO,CAAC,OAAO,CAAC,eAAe,CAAC,GAAG,SAAS,MAAM,CAAC,IAAI,CACrD,OAAO,IAAI,CAAC,KAAK,EAAE,CACpB,CAAC,QAAQ,CAAC,QAAQ,CAAC,EAAE,CAAA;IACxB,CAAC;IAED,iCAAiC;IACjC,uBAAuB;QACrB,OAAO,KAAK,CAAA;IACd,CAAC;IAED,KAAK,CAAC,oBAAoB;QACxB,MAAM,IAAI,KAAK,CAAC,iBAAiB,CAAC,CAAA;IACpC,CAAC;CACF"}
\ No newline at end of file
diff --git a/lib/esnext/index.d.ts b/lib/esnext/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9caa09694850d35d371beda2586c32bc65690dba
--- /dev/null
+++ b/lib/esnext/index.d.ts
@@ -0,0 +1,130 @@
+/// <reference types="node" />
+/// <reference types="node" />
+/// <reference types="node" />
+import * as http from 'http';
+import * as ifm from './interfaces';
+import type ProxyAgent from 'undici/types/proxy-agent';
+export declare enum HttpCodes {
+    OK = 200,
+    MultipleChoices = 300,
+    MovedPermanently = 301,
+    ResourceMoved = 302,
+    SeeOther = 303,
+    NotModified = 304,
+    UseProxy = 305,
+    SwitchProxy = 306,
+    TemporaryRedirect = 307,
+    PermanentRedirect = 308,
+    BadRequest = 400,
+    Unauthorized = 401,
+    PaymentRequired = 402,
+    Forbidden = 403,
+    NotFound = 404,
+    MethodNotAllowed = 405,
+    NotAcceptable = 406,
+    ProxyAuthenticationRequired = 407,
+    RequestTimeout = 408,
+    Conflict = 409,
+    Gone = 410,
+    TooManyRequests = 429,
+    InternalServerError = 500,
+    NotImplemented = 501,
+    BadGateway = 502,
+    ServiceUnavailable = 503,
+    GatewayTimeout = 504
+}
+export declare enum Headers {
+    Accept = "accept",
+    ContentType = "content-type"
+}
+export declare enum MediaTypes {
+    ApplicationJson = "application/json"
+}
+/**
+ * Returns the proxy URL, depending upon the supplied url and proxy environment variables.
+ * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com
+ */
+export declare function getProxyUrl(serverUrl: string): string;
+export declare class HttpClientError extends Error {
+    constructor(message: string, statusCode: number);
+    statusCode: number;
+    result?: any;
+}
+export declare class HttpClientResponse {
+    constructor(message: http.IncomingMessage);
+    message: http.IncomingMessage;
+    readBody(): Promise<string>;
+    readBodyBuffer?(): Promise<Buffer>;
+}
+export declare function isHttps(requestUrl: string): boolean;
+export declare class HttpClient {
+    userAgent: string | undefined;
+    handlers: ifm.RequestHandler[];
+    requestOptions: ifm.RequestOptions | undefined;
+    private _ignoreSslError;
+    private _socketTimeout;
+    private _allowRedirects;
+    private _allowRedirectDowngrade;
+    private _maxRedirects;
+    private _allowRetries;
+    private _maxRetries;
+    private _agent;
+    private _proxyAgent;
+    private _proxyAgentDispatcher;
+    private _keepAlive;
+    private _disposed;
+    constructor(userAgent?: string, handlers?: ifm.RequestHandler[], requestOptions?: ifm.RequestOptions);
+    options(requestUrl: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    get(requestUrl: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    del(requestUrl: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    post(requestUrl: string, data: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    patch(requestUrl: string, data: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    put(requestUrl: string, data: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    head(requestUrl: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    sendStream(verb: string, requestUrl: string, stream: NodeJS.ReadableStream, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    /**
+     * Gets a typed object from an endpoint
+     * Be aware that not found returns a null.  Other errors (4xx, 5xx) reject the promise
+     */
+    getJson<T>(requestUrl: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<ifm.TypedResponse<T>>;
+    postJson<T>(requestUrl: string, obj: any, additionalHeaders?: http.OutgoingHttpHeaders): Promise<ifm.TypedResponse<T>>;
+    putJson<T>(requestUrl: string, obj: any, additionalHeaders?: http.OutgoingHttpHeaders): Promise<ifm.TypedResponse<T>>;
+    patchJson<T>(requestUrl: string, obj: any, additionalHeaders?: http.OutgoingHttpHeaders): Promise<ifm.TypedResponse<T>>;
+    /**
+     * Makes a raw http request.
+     * All other methods such as get, post, patch, and request ultimately call this.
+     * Prefer get, del, post and patch
+     */
+    request(verb: string, requestUrl: string, data: string | NodeJS.ReadableStream | null, headers?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    /**
+     * Needs to be called if keepAlive is set to true in request options.
+     */
+    dispose(): void;
+    /**
+     * Raw request.
+     * @param info
+     * @param data
+     */
+    requestRaw(info: ifm.RequestInfo, data: string | NodeJS.ReadableStream | null): Promise<HttpClientResponse>;
+    /**
+     * Raw request with callback.
+     * @param info
+     * @param data
+     * @param onResult
+     */
+    requestRawWithCallback(info: ifm.RequestInfo, data: string | NodeJS.ReadableStream | null, onResult: (err?: Error, res?: HttpClientResponse) => void): void;
+    /**
+     * Gets an http agent. This function is useful when you need an http agent that handles
+     * routing through a proxy server - depending upon the url and proxy environment variables.
+     * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com
+     */
+    getAgent(serverUrl: string): http.Agent;
+    getAgentDispatcher(serverUrl: string): Promise<ProxyAgent | undefined>;
+    private _prepareRequest;
+    private _mergeHeaders;
+    private _getExistingOrDefaultHeader;
+    private _getAgent;
+    private _getProxyAgentDispatcher;
+    private _performExponentialBackoff;
+    private _processResponse;
+}
diff --git a/lib/esnext/index.js b/lib/esnext/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..9086c7d6b1810d1b955a287d68cbdc1649f4ba2e
--- /dev/null
+++ b/lib/esnext/index.js
@@ -0,0 +1,595 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+import * as http from 'http';
+import * as https from 'https';
+import * as pm from './proxy';
+import * as tunnel from 'tunnel';
+export var HttpCodes;
+(function (HttpCodes) {
+    HttpCodes[HttpCodes["OK"] = 200] = "OK";
+    HttpCodes[HttpCodes["MultipleChoices"] = 300] = "MultipleChoices";
+    HttpCodes[HttpCodes["MovedPermanently"] = 301] = "MovedPermanently";
+    HttpCodes[HttpCodes["ResourceMoved"] = 302] = "ResourceMoved";
+    HttpCodes[HttpCodes["SeeOther"] = 303] = "SeeOther";
+    HttpCodes[HttpCodes["NotModified"] = 304] = "NotModified";
+    HttpCodes[HttpCodes["UseProxy"] = 305] = "UseProxy";
+    HttpCodes[HttpCodes["SwitchProxy"] = 306] = "SwitchProxy";
+    HttpCodes[HttpCodes["TemporaryRedirect"] = 307] = "TemporaryRedirect";
+    HttpCodes[HttpCodes["PermanentRedirect"] = 308] = "PermanentRedirect";
+    HttpCodes[HttpCodes["BadRequest"] = 400] = "BadRequest";
+    HttpCodes[HttpCodes["Unauthorized"] = 401] = "Unauthorized";
+    HttpCodes[HttpCodes["PaymentRequired"] = 402] = "PaymentRequired";
+    HttpCodes[HttpCodes["Forbidden"] = 403] = "Forbidden";
+    HttpCodes[HttpCodes["NotFound"] = 404] = "NotFound";
+    HttpCodes[HttpCodes["MethodNotAllowed"] = 405] = "MethodNotAllowed";
+    HttpCodes[HttpCodes["NotAcceptable"] = 406] = "NotAcceptable";
+    HttpCodes[HttpCodes["ProxyAuthenticationRequired"] = 407] = "ProxyAuthenticationRequired";
+    HttpCodes[HttpCodes["RequestTimeout"] = 408] = "RequestTimeout";
+    HttpCodes[HttpCodes["Conflict"] = 409] = "Conflict";
+    HttpCodes[HttpCodes["Gone"] = 410] = "Gone";
+    HttpCodes[HttpCodes["TooManyRequests"] = 429] = "TooManyRequests";
+    HttpCodes[HttpCodes["InternalServerError"] = 500] = "InternalServerError";
+    HttpCodes[HttpCodes["NotImplemented"] = 501] = "NotImplemented";
+    HttpCodes[HttpCodes["BadGateway"] = 502] = "BadGateway";
+    HttpCodes[HttpCodes["ServiceUnavailable"] = 503] = "ServiceUnavailable";
+    HttpCodes[HttpCodes["GatewayTimeout"] = 504] = "GatewayTimeout";
+})(HttpCodes || (HttpCodes = {}));
+export var Headers;
+(function (Headers) {
+    Headers["Accept"] = "accept";
+    Headers["ContentType"] = "content-type";
+})(Headers || (Headers = {}));
+export var MediaTypes;
+(function (MediaTypes) {
+    MediaTypes["ApplicationJson"] = "application/json";
+})(MediaTypes || (MediaTypes = {}));
+/**
+ * Returns the proxy URL, depending upon the supplied url and proxy environment variables.
+ * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com
+ */
+export function getProxyUrl(serverUrl) {
+    const proxyUrl = pm.getProxyUrl(new URL(serverUrl));
+    return proxyUrl ? proxyUrl.href : '';
+}
+const HttpRedirectCodes = [
+    HttpCodes.MovedPermanently,
+    HttpCodes.ResourceMoved,
+    HttpCodes.SeeOther,
+    HttpCodes.TemporaryRedirect,
+    HttpCodes.PermanentRedirect
+];
+const HttpResponseRetryCodes = [
+    HttpCodes.BadGateway,
+    HttpCodes.ServiceUnavailable,
+    HttpCodes.GatewayTimeout
+];
+const RetryableHttpVerbs = ['OPTIONS', 'GET', 'DELETE', 'HEAD'];
+const ExponentialBackoffCeiling = 10;
+const ExponentialBackoffTimeSlice = 5;
+export class HttpClientError extends Error {
+    constructor(message, statusCode) {
+        super(message);
+        this.name = 'HttpClientError';
+        this.statusCode = statusCode;
+        Object.setPrototypeOf(this, HttpClientError.prototype);
+    }
+    statusCode;
+    result;
+}
+export class HttpClientResponse {
+    constructor(message) {
+        this.message = message;
+    }
+    message;
+    async readBody() {
+        return new Promise(async (resolve) => {
+            let output = Buffer.alloc(0);
+            this.message.on('data', (chunk) => {
+                output = Buffer.concat([output, chunk]);
+            });
+            this.message.on('end', () => {
+                resolve(output.toString());
+            });
+        });
+    }
+    async readBodyBuffer() {
+        return new Promise(async (resolve) => {
+            const chunks = [];
+            this.message.on('data', (chunk) => {
+                chunks.push(chunk);
+            });
+            this.message.on('end', () => {
+                resolve(Buffer.concat(chunks));
+            });
+        });
+    }
+}
+export function isHttps(requestUrl) {
+    const parsedUrl = new URL(requestUrl);
+    return parsedUrl.protocol === 'https:';
+}
+export class HttpClient {
+    userAgent;
+    handlers;
+    requestOptions;
+    _ignoreSslError = false;
+    _socketTimeout;
+    _allowRedirects = true;
+    _allowRedirectDowngrade = false;
+    _maxRedirects = 50;
+    _allowRetries = false;
+    _maxRetries = 1;
+    _agent;
+    _proxyAgent;
+    _proxyAgentDispatcher;
+    _keepAlive = false;
+    _disposed = false;
+    constructor(userAgent, handlers, requestOptions) {
+        this.userAgent = userAgent;
+        this.handlers = handlers || [];
+        this.requestOptions = requestOptions;
+        if (requestOptions) {
+            if (requestOptions.ignoreSslError != null) {
+                this._ignoreSslError = requestOptions.ignoreSslError;
+            }
+            this._socketTimeout = requestOptions.socketTimeout;
+            if (requestOptions.allowRedirects != null) {
+                this._allowRedirects = requestOptions.allowRedirects;
+            }
+            if (requestOptions.allowRedirectDowngrade != null) {
+                this._allowRedirectDowngrade = requestOptions.allowRedirectDowngrade;
+            }
+            if (requestOptions.maxRedirects != null) {
+                this._maxRedirects = Math.max(requestOptions.maxRedirects, 0);
+            }
+            if (requestOptions.keepAlive != null) {
+                this._keepAlive = requestOptions.keepAlive;
+            }
+            if (requestOptions.allowRetries != null) {
+                this._allowRetries = requestOptions.allowRetries;
+            }
+            if (requestOptions.maxRetries != null) {
+                this._maxRetries = requestOptions.maxRetries;
+            }
+        }
+    }
+    async options(requestUrl, additionalHeaders) {
+        return this.request('OPTIONS', requestUrl, null, additionalHeaders || {});
+    }
+    async get(requestUrl, additionalHeaders) {
+        return this.request('GET', requestUrl, null, additionalHeaders || {});
+    }
+    async del(requestUrl, additionalHeaders) {
+        return this.request('DELETE', requestUrl, null, additionalHeaders || {});
+    }
+    async post(requestUrl, data, additionalHeaders) {
+        return this.request('POST', requestUrl, data, additionalHeaders || {});
+    }
+    async patch(requestUrl, data, additionalHeaders) {
+        return this.request('PATCH', requestUrl, data, additionalHeaders || {});
+    }
+    async put(requestUrl, data, additionalHeaders) {
+        return this.request('PUT', requestUrl, data, additionalHeaders || {});
+    }
+    async head(requestUrl, additionalHeaders) {
+        return this.request('HEAD', requestUrl, null, additionalHeaders || {});
+    }
+    async sendStream(verb, requestUrl, stream, additionalHeaders) {
+        return this.request(verb, requestUrl, stream, additionalHeaders);
+    }
+    /**
+     * Gets a typed object from an endpoint
+     * Be aware that not found returns a null.  Other errors (4xx, 5xx) reject the promise
+     */
+    async getJson(requestUrl, additionalHeaders = {}) {
+        additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);
+        const res = await this.get(requestUrl, additionalHeaders);
+        return this._processResponse(res, this.requestOptions);
+    }
+    async postJson(requestUrl, obj, additionalHeaders = {}) {
+        const data = JSON.stringify(obj, null, 2);
+        additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);
+        additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);
+        const res = await this.post(requestUrl, data, additionalHeaders);
+        return this._processResponse(res, this.requestOptions);
+    }
+    async putJson(requestUrl, obj, additionalHeaders = {}) {
+        const data = JSON.stringify(obj, null, 2);
+        additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);
+        additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);
+        const res = await this.put(requestUrl, data, additionalHeaders);
+        return this._processResponse(res, this.requestOptions);
+    }
+    async patchJson(requestUrl, obj, additionalHeaders = {}) {
+        const data = JSON.stringify(obj, null, 2);
+        additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);
+        additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);
+        const res = await this.patch(requestUrl, data, additionalHeaders);
+        return this._processResponse(res, this.requestOptions);
+    }
+    /**
+     * Makes a raw http request.
+     * All other methods such as get, post, patch, and request ultimately call this.
+     * Prefer get, del, post and patch
+     */
+    async request(verb, requestUrl, data, headers) {
+        if (this._disposed) {
+            throw new Error('Client has already been disposed.');
+        }
+        const parsedUrl = new URL(requestUrl);
+        let info = this._prepareRequest(verb, parsedUrl, headers);
+        // Only perform retries on reads since writes may not be idempotent.
+        const maxTries = this._allowRetries && RetryableHttpVerbs.includes(verb)
+            ? this._maxRetries + 1
+            : 1;
+        let numTries = 0;
+        let response;
+        do {
+            response = await this.requestRaw(info, data);
+            // Check if it's an authentication challenge
+            if (response &&
+                response.message &&
+                response.message.statusCode === HttpCodes.Unauthorized) {
+                let authenticationHandler;
+                for (const handler of this.handlers) {
+                    if (handler.canHandleAuthentication(response)) {
+                        authenticationHandler = handler;
+                        break;
+                    }
+                }
+                if (authenticationHandler) {
+                    return authenticationHandler.handleAuthentication(this, info, data);
+                }
+                else {
+                    // We have received an unauthorized response but have no handlers to handle it.
+                    // Let the response return to the caller.
+                    return response;
+                }
+            }
+            let redirectsRemaining = this._maxRedirects;
+            while (response.message.statusCode &&
+                HttpRedirectCodes.includes(response.message.statusCode) &&
+                this._allowRedirects &&
+                redirectsRemaining > 0) {
+                const redirectUrl = response.message.headers['location'];
+                if (!redirectUrl) {
+                    // if there's no location to redirect to, we won't
+                    break;
+                }
+                const parsedRedirectUrl = new URL(redirectUrl);
+                if (parsedUrl.protocol === 'https:' &&
+                    parsedUrl.protocol !== parsedRedirectUrl.protocol &&
+                    !this._allowRedirectDowngrade) {
+                    throw new Error('Redirect from HTTPS to HTTP protocol. This downgrade is not allowed for security reasons. If you want to allow this behavior, set the allowRedirectDowngrade option to true.');
+                }
+                // we need to finish reading the response before reassigning response
+                // which will leak the open socket.
+                await response.readBody();
+                // strip authorization header if redirected to a different hostname
+                if (parsedRedirectUrl.hostname !== parsedUrl.hostname) {
+                    for (const header in headers) {
+                        // header names are case insensitive
+                        if (header.toLowerCase() === 'authorization') {
+                            delete headers[header];
+                        }
+                    }
+                }
+                // let's make the request with the new redirectUrl
+                info = this._prepareRequest(verb, parsedRedirectUrl, headers);
+                response = await this.requestRaw(info, data);
+                redirectsRemaining--;
+            }
+            if (!response.message.statusCode ||
+                !HttpResponseRetryCodes.includes(response.message.statusCode)) {
+                // If not a retry code, return immediately instead of retrying
+                return response;
+            }
+            numTries += 1;
+            if (numTries < maxTries) {
+                await response.readBody();
+                await this._performExponentialBackoff(numTries);
+            }
+        } while (numTries < maxTries);
+        return response;
+    }
+    /**
+     * Needs to be called if keepAlive is set to true in request options.
+     */
+    dispose() {
+        if (this._agent) {
+            this._agent.destroy();
+        }
+        this._disposed = true;
+    }
+    /**
+     * Raw request.
+     * @param info
+     * @param data
+     */
+    async requestRaw(info, data) {
+        return new Promise((resolve, reject) => {
+            function callbackForResult(err, res) {
+                if (err) {
+                    reject(err);
+                }
+                else if (!res) {
+                    // If `err` is not passed, then `res` must be passed.
+                    reject(new Error('Unknown error'));
+                }
+                else {
+                    resolve(res);
+                }
+            }
+            this.requestRawWithCallback(info, data, callbackForResult);
+        });
+    }
+    /**
+     * Raw request with callback.
+     * @param info
+     * @param data
+     * @param onResult
+     */
+    requestRawWithCallback(info, data, onResult) {
+        if (typeof data === 'string') {
+            if (!info.options.headers) {
+                info.options.headers = {};
+            }
+            info.options.headers['Content-Length'] = Buffer.byteLength(data, 'utf8');
+        }
+        let callbackCalled = false;
+        function handleResult(err, res) {
+            if (!callbackCalled) {
+                callbackCalled = true;
+                onResult(err, res);
+            }
+        }
+        const req = info.httpModule.request(info.options, (msg) => {
+            const res = new HttpClientResponse(msg);
+            handleResult(undefined, res);
+        });
+        let socket;
+        req.on('socket', sock => {
+            socket = sock;
+        });
+        // If we ever get disconnected, we want the socket to timeout eventually
+        req.setTimeout(this._socketTimeout || 3 * 60000, () => {
+            if (socket) {
+                socket.end();
+            }
+            handleResult(new Error(`Request timeout: ${info.options.path}`));
+        });
+        req.on('error', function (err) {
+            // err has statusCode property
+            // res should have headers
+            handleResult(err);
+        });
+        if (data && typeof data === 'string') {
+            req.write(data, 'utf8');
+        }
+        if (data && typeof data !== 'string') {
+            data.on('close', function () {
+                req.end();
+            });
+            data.pipe(req);
+        }
+        else {
+            req.end();
+        }
+    }
+    /**
+     * Gets an http agent. This function is useful when you need an http agent that handles
+     * routing through a proxy server - depending upon the url and proxy environment variables.
+     * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com
+     */
+    getAgent(serverUrl) {
+        const parsedUrl = new URL(serverUrl);
+        return this._getAgent(parsedUrl);
+    }
+    async getAgentDispatcher(serverUrl) {
+        const parsedUrl = new URL(serverUrl);
+        const proxyUrl = pm.getProxyUrl(parsedUrl);
+        const useProxy = proxyUrl && proxyUrl.hostname;
+        if (!useProxy) {
+            return undefined;
+        }
+        return await this._getProxyAgentDispatcher(parsedUrl, proxyUrl);
+    }
+    _prepareRequest(method, requestUrl, headers) {
+        const info = {};
+        info.parsedUrl = requestUrl;
+        const usingSsl = info.parsedUrl.protocol === 'https:';
+        info.httpModule = usingSsl ? https : http;
+        const defaultPort = usingSsl ? 443 : 80;
+        info.options = {};
+        info.options.host = info.parsedUrl.hostname;
+        info.options.port = info.parsedUrl.port
+            ? parseInt(info.parsedUrl.port)
+            : defaultPort;
+        info.options.path =
+            (info.parsedUrl.pathname || '') + (info.parsedUrl.search || '');
+        info.options.method = method;
+        info.options.headers = this._mergeHeaders(headers);
+        if (this.userAgent != null) {
+            info.options.headers['user-agent'] = this.userAgent;
+        }
+        info.options.agent = this._getAgent(info.parsedUrl);
+        // gives handlers an opportunity to participate
+        if (this.handlers) {
+            for (const handler of this.handlers) {
+                handler.prepareRequest(info.options);
+            }
+        }
+        return info;
+    }
+    _mergeHeaders(headers) {
+        if (this.requestOptions && this.requestOptions.headers) {
+            return Object.assign({}, lowercaseKeys(this.requestOptions.headers), lowercaseKeys(headers || {}));
+        }
+        return lowercaseKeys(headers || {});
+    }
+    _getExistingOrDefaultHeader(additionalHeaders, header, _default) {
+        let clientHeader;
+        if (this.requestOptions && this.requestOptions.headers) {
+            clientHeader = lowercaseKeys(this.requestOptions.headers)[header];
+        }
+        return additionalHeaders[header] || clientHeader || _default;
+    }
+    _getAgent(parsedUrl) {
+        let agent;
+        const proxyUrl = pm.getProxyUrl(parsedUrl);
+        const useProxy = proxyUrl && proxyUrl.hostname;
+        if (this._keepAlive && useProxy) {
+            agent = this._proxyAgent;
+        }
+        if (!useProxy) {
+            agent = this._agent;
+        }
+        // if agent is already assigned use that agent.
+        if (agent) {
+            return agent;
+        }
+        const usingSsl = parsedUrl.protocol === 'https:';
+        let maxSockets = 100;
+        if (this.requestOptions) {
+            maxSockets = this.requestOptions.maxSockets || http.globalAgent.maxSockets;
+        }
+        // This is `useProxy` again, but we need to check `proxyURl` directly for TypeScripts's flow analysis.
+        if (proxyUrl && proxyUrl.hostname) {
+            const agentOptions = {
+                maxSockets,
+                keepAlive: this._keepAlive,
+                proxy: {
+                    ...((proxyUrl.username || proxyUrl.password) && {
+                        proxyAuth: `${proxyUrl.username}:${proxyUrl.password}`
+                    }),
+                    host: proxyUrl.hostname,
+                    port: proxyUrl.port
+                }
+            };
+            let tunnelAgent;
+            const overHttps = proxyUrl.protocol === 'https:';
+            if (usingSsl) {
+                tunnelAgent = overHttps ? tunnel.httpsOverHttps : tunnel.httpsOverHttp;
+            }
+            else {
+                tunnelAgent = overHttps ? tunnel.httpOverHttps : tunnel.httpOverHttp;
+            }
+            agent = tunnelAgent(agentOptions);
+            this._proxyAgent = agent;
+        }
+        // if tunneling agent isn't assigned create a new agent
+        if (!agent) {
+            const options = { keepAlive: this._keepAlive, maxSockets };
+            agent = usingSsl ? new https.Agent(options) : new http.Agent(options);
+            this._agent = agent;
+        }
+        if (usingSsl && this._ignoreSslError) {
+            // we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process
+            // http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options
+            // we have to cast it to any and change it directly
+            agent.options = Object.assign(agent.options || {}, {
+                rejectUnauthorized: false
+            });
+        }
+        return agent;
+    }
+    async _getProxyAgentDispatcher(parsedUrl, proxyUrl) {
+        let proxyAgent;
+        if (this._keepAlive) {
+            proxyAgent = this._proxyAgentDispatcher;
+        }
+        // if agent is already assigned use that agent.
+        if (proxyAgent) {
+            return proxyAgent;
+        }
+        const usingSsl = parsedUrl.protocol === 'https:';
+        // Lazy load ProxyAgent to avoid bundling all the undici
+        const ProxyAgent = (await import('undici/lib/proxy-agent'));
+        proxyAgent = new ProxyAgent({
+            uri: proxyUrl.href,
+            pipelining: !this._keepAlive ? 0 : 1,
+            ...((proxyUrl.username || proxyUrl.password) && {
+                token: `Basic ${Buffer.from(`${proxyUrl.username}:${proxyUrl.password}`).toString('base64')}`
+            })
+        });
+        this._proxyAgentDispatcher = proxyAgent;
+        if (usingSsl && this._ignoreSslError) {
+            // we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process
+            // http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options
+            // we have to cast it to any and change it directly
+            proxyAgent.options = Object.assign(proxyAgent.options.requestTls || {}, {
+                rejectUnauthorized: false
+            });
+        }
+        return proxyAgent;
+    }
+    async _performExponentialBackoff(retryNumber) {
+        retryNumber = Math.min(ExponentialBackoffCeiling, retryNumber);
+        const ms = ExponentialBackoffTimeSlice * Math.pow(2, retryNumber);
+        return new Promise(resolve => setTimeout(() => resolve(), ms));
+    }
+    async _processResponse(res, options) {
+        return new Promise(async (resolve, reject) => {
+            const statusCode = res.message.statusCode || 0;
+            const response = {
+                statusCode,
+                result: null,
+                headers: {}
+            };
+            // not found leads to null obj returned
+            if (statusCode === HttpCodes.NotFound) {
+                resolve(response);
+            }
+            // get the result from the body
+            function dateTimeDeserializer(key, value) {
+                if (typeof value === 'string') {
+                    const a = new Date(value);
+                    if (!isNaN(a.valueOf())) {
+                        return a;
+                    }
+                }
+                return value;
+            }
+            let obj;
+            let contents;
+            try {
+                contents = await res.readBody();
+                if (contents && contents.length > 0) {
+                    if (options && options.deserializeDates) {
+                        obj = JSON.parse(contents, dateTimeDeserializer);
+                    }
+                    else {
+                        obj = JSON.parse(contents);
+                    }
+                    response.result = obj;
+                }
+                response.headers = res.message.headers;
+            }
+            catch (err) {
+                // Invalid resource (contents not json);  leaving result obj null
+            }
+            // note that 3xx redirects are handled by the http layer.
+            if (statusCode > 299) {
+                let msg;
+                // if exception/error in body, attempt to get better error
+                if (obj && obj.message) {
+                    msg = obj.message;
+                }
+                else if (contents && contents.length > 0) {
+                    // it may be the case that the exception is in the body message as string
+                    msg = contents;
+                }
+                else {
+                    msg = `Failed request: (${statusCode})`;
+                }
+                const err = new HttpClientError(msg, statusCode);
+                err.result = response.result;
+                reject(err);
+            }
+            else {
+                resolve(response);
+            }
+        });
+    }
+}
+const lowercaseKeys = (obj) => Object.keys(obj).reduce((c, k) => ((c[k.toLowerCase()] = obj[k]), c), {});
+//# sourceMappingURL=index.js.map
\ No newline at end of file
diff --git a/lib/esnext/index.js.map b/lib/esnext/index.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..577ad008b1d0b6290c22872e6497e3f7336aac0f
--- /dev/null
+++ b/lib/esnext/index.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../../src/index.ts"],"names":[],"mappings":"AAAA,uDAAuD;AAEvD,OAAO,KAAK,IAAI,MAAM,MAAM,CAAA;AAC5B,OAAO,KAAK,KAAK,MAAM,OAAO,CAAA;AAG9B,OAAO,KAAK,EAAE,MAAM,SAAS,CAAA;AAC7B,OAAO,KAAK,MAAM,MAAM,QAAQ,CAAA;AAGhC,MAAM,CAAN,IAAY,SA4BX;AA5BD,WAAY,SAAS;IACnB,uCAAQ,CAAA;IACR,iEAAqB,CAAA;IACrB,mEAAsB,CAAA;IACtB,6DAAmB,CAAA;IACnB,mDAAc,CAAA;IACd,yDAAiB,CAAA;IACjB,mDAAc,CAAA;IACd,yDAAiB,CAAA;IACjB,qEAAuB,CAAA;IACvB,qEAAuB,CAAA;IACvB,uDAAgB,CAAA;IAChB,2DAAkB,CAAA;IAClB,iEAAqB,CAAA;IACrB,qDAAe,CAAA;IACf,mDAAc,CAAA;IACd,mEAAsB,CAAA;IACtB,6DAAmB,CAAA;IACnB,yFAAiC,CAAA;IACjC,+DAAoB,CAAA;IACpB,mDAAc,CAAA;IACd,2CAAU,CAAA;IACV,iEAAqB,CAAA;IACrB,yEAAyB,CAAA;IACzB,+DAAoB,CAAA;IACpB,uDAAgB,CAAA;IAChB,uEAAwB,CAAA;IACxB,+DAAoB,CAAA;AACtB,CAAC,EA5BW,SAAS,KAAT,SAAS,QA4BpB;AAED,MAAM,CAAN,IAAY,OAGX;AAHD,WAAY,OAAO;IACjB,4BAAiB,CAAA;IACjB,uCAA4B,CAAA;AAC9B,CAAC,EAHW,OAAO,KAAP,OAAO,QAGlB;AAED,MAAM,CAAN,IAAY,UAEX;AAFD,WAAY,UAAU;IACpB,kDAAoC,CAAA;AACtC,CAAC,EAFW,UAAU,KAAV,UAAU,QAErB;AAED;;;GAGG;AACH,MAAM,UAAU,WAAW,CAAC,SAAiB;IAC3C,MAAM,QAAQ,GAAG,EAAE,CAAC,WAAW,CAAC,IAAI,GAAG,CAAC,SAAS,CAAC,CAAC,CAAA;IACnD,OAAO,QAAQ,CAAC,CAAC,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC,CAAC,EAAE,CAAA;AACtC,CAAC;AAED,MAAM,iBAAiB,GAAa;IAClC,SAAS,CAAC,gBAAgB;IAC1B,SAAS,CAAC,aAAa;IACvB,SAAS,CAAC,QAAQ;IAClB,SAAS,CAAC,iBAAiB;IAC3B,SAAS,CAAC,iBAAiB;CAC5B,CAAA;AACD,MAAM,sBAAsB,GAAa;IACvC,SAAS,CAAC,UAAU;IACpB,SAAS,CAAC,kBAAkB;IAC5B,SAAS,CAAC,cAAc;CACzB,CAAA;AACD,MAAM,kBAAkB,GAAa,CAAC,SAAS,EAAE,KAAK,EAAE,QAAQ,EAAE,MAAM,CAAC,CAAA;AACzE,MAAM,yBAAyB,GAAG,EAAE,CAAA;AACpC,MAAM,2BAA2B,GAAG,CAAC,CAAA;AAErC,MAAM,OAAO,eAAgB,SAAQ,KAAK;IACxC,YAAY,OAAe,EAAE,UAAkB;QAC7C,KAAK,CAAC,OAAO,CAAC,CAAA;QACd,IAAI,CAAC,IAAI,GAAG,iBAAiB,CAAA;QAC7B,IAAI,CAAC,UAAU,GAAG,UAAU,CAAA;QAC5B,MAAM,CAAC,cAAc,CAAC,IAAI,EAAE,eAAe,CAAC,SAAS,CAAC,CAAA;IACxD,CAAC;IAED,UAAU,CAAQ;IAClB,MAAM,CAAM;CACb;AAED,MAAM,OAAO,kBAAkB;IAC7B,YAAY,OAA6B;QACvC,IAAI,CAAC,OAAO,GAAG,OAAO,CAAA;IACxB,CAAC;IAED,OAAO,CAAsB;IAC7B,KAAK,CAAC,QAAQ;QACZ,OAAO,IAAI,OAAO,CAAS,KAAK,EAAC,OAAO,EAAC,EAAE;YACzC,IAAI,MAAM,GAAG,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,CAAA;YAE5B,IAAI,CAAC,OAAO,CAAC,EAAE,CAAC,MAAM,EAAE,CAAC,KAAa,EAAE,EAAE;gBACxC,MAAM,GAAG,MAAM,CAAC,MAAM,CAAC,CAAC,MAAM,EAAE,KAAK,CAAC,CAAC,CAAA;YACzC,CAAC,CAAC,CAAA;YAEF,IAAI,CAAC,OAAO,CAAC,EAAE,CAAC,KAAK,EAAE,GAAG,EAAE;gBAC1B,OAAO,CAAC,MAAM,CAAC,QAAQ,EAAE,CAAC,CAAA;YAC5B,CAAC,CAAC,CAAA;QACJ,CAAC,CAAC,CAAA;IACJ,CAAC;IAED,KAAK,CAAC,cAAc;QAClB,OAAO,IAAI,OAAO,CAAS,KAAK,EAAC,OAAO,EAAC,EAAE;YACzC,MAAM,MAAM,GAAa,EAAE,CAAA;YAE3B,IAAI,CAAC,OAAO,CAAC,EAAE,CAAC,MAAM,EAAE,CAAC,KAAa,EAAE,EAAE;gBACxC,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,CAAA;YACpB,CAAC,CAAC,CAAA;YAEF,IAAI,CAAC,OAAO,CAAC,EAAE,CAAC,KAAK,EAAE,GAAG,EAAE;gBAC1B,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAA;YAChC,CAAC,CAAC,CAAA;QACJ,CAAC,CAAC,CAAA;IACJ,CAAC;CACF;AAED,MAAM,UAAU,OAAO,CAAC,UAAkB;IACxC,MAAM,SAAS,GAAQ,IAAI,GAAG,CAAC,UAAU,CAAC,CAAA;IAC1C,OAAO,SAAS,CAAC,QAAQ,KAAK,QAAQ,CAAA;AACxC,CAAC;AAED,MAAM,OAAO,UAAU;IACrB,SAAS,CAAoB;IAC7B,QAAQ,CAAsB;IAC9B,cAAc,CAAgC;IAEtC,eAAe,GAAG,KAAK,CAAA;IACvB,cAAc,CAAoB;IAClC,eAAe,GAAG,IAAI,CAAA;IACtB,uBAAuB,GAAG,KAAK,CAAA;IAC/B,aAAa,GAAG,EAAE,CAAA;IAClB,aAAa,GAAG,KAAK,CAAA;IACrB,WAAW,GAAG,CAAC,CAAA;IACf,MAAM,CAAK;IACX,WAAW,CAAK;IAChB,qBAAqB,CAAK;IAC1B,UAAU,GAAG,KAAK,CAAA;IAClB,SAAS,GAAG,KAAK,CAAA;IAEzB,YACE,SAAkB,EAClB,QAA+B,EAC/B,cAAmC;QAEnC,IAAI,CAAC,SAAS,GAAG,SAAS,CAAA;QAC1B,IAAI,CAAC,QAAQ,GAAG,QAAQ,IAAI,EAAE,CAAA;QAC9B,IAAI,CAAC,cAAc,GAAG,cAAc,CAAA;QACpC,IAAI,cAAc,EAAE;YAClB,IAAI,cAAc,CAAC,cAAc,IAAI,IAAI,EAAE;gBACzC,IAAI,CAAC,eAAe,GAAG,cAAc,CAAC,cAAc,CAAA;aACrD;YAED,IAAI,CAAC,cAAc,GAAG,cAAc,CAAC,aAAa,CAAA;YAElD,IAAI,cAAc,CAAC,cAAc,IAAI,IAAI,EAAE;gBACzC,IAAI,CAAC,eAAe,GAAG,cAAc,CAAC,cAAc,CAAA;aACrD;YAED,IAAI,cAAc,CAAC,sBAAsB,IAAI,IAAI,EAAE;gBACjD,IAAI,CAAC,uBAAuB,GAAG,cAAc,CAAC,sBAAsB,CAAA;aACrE;YAED,IAAI,cAAc,CAAC,YAAY,IAAI,IAAI,EAAE;gBACvC,IAAI,CAAC,aAAa,GAAG,IAAI,CAAC,GAAG,CAAC,cAAc,CAAC,YAAY,EAAE,CAAC,CAAC,CAAA;aAC9D;YAED,IAAI,cAAc,CAAC,SAAS,IAAI,IAAI,EAAE;gBACpC,IAAI,CAAC,UAAU,GAAG,cAAc,CAAC,SAAS,CAAA;aAC3C;YAED,IAAI,cAAc,CAAC,YAAY,IAAI,IAAI,EAAE;gBACvC,IAAI,CAAC,aAAa,GAAG,c
\ No newline at end of file
diff --git a/lib/esnext/interfaces.d.ts b/lib/esnext/interfaces.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..775ced94b534bdcaa77b45a77c61b73c85b8d2e6
--- /dev/null
+++ b/lib/esnext/interfaces.d.ts
@@ -0,0 +1,46 @@
+/// <reference types="node" />
+/// <reference types="node" />
+/// <reference types="node" />
+import * as http from 'http';
+import * as https from 'https';
+import { HttpClientResponse } from './index';
+export interface HttpClient {
+    options(requestUrl: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    get(requestUrl: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    del(requestUrl: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    post(requestUrl: string, data: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    patch(requestUrl: string, data: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    put(requestUrl: string, data: string, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    sendStream(verb: string, requestUrl: string, stream: NodeJS.ReadableStream, additionalHeaders?: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    request(verb: string, requestUrl: string, data: string | NodeJS.ReadableStream, headers: http.OutgoingHttpHeaders): Promise<HttpClientResponse>;
+    requestRaw(info: RequestInfo, data: string | NodeJS.ReadableStream): Promise<HttpClientResponse>;
+    requestRawWithCallback(info: RequestInfo, data: string | NodeJS.ReadableStream, onResult: (err?: Error, res?: HttpClientResponse) => void): void;
+}
+export interface RequestHandler {
+    prepareRequest(options: http.RequestOptions): void;
+    canHandleAuthentication(response: HttpClientResponse): boolean;
+    handleAuthentication(httpClient: HttpClient, requestInfo: RequestInfo, data: string | NodeJS.ReadableStream | null): Promise<HttpClientResponse>;
+}
+export interface RequestInfo {
+    options: http.RequestOptions;
+    parsedUrl: URL;
+    httpModule: typeof http | typeof https;
+}
+export interface RequestOptions {
+    headers?: http.OutgoingHttpHeaders;
+    socketTimeout?: number;
+    ignoreSslError?: boolean;
+    allowRedirects?: boolean;
+    allowRedirectDowngrade?: boolean;
+    maxRedirects?: number;
+    maxSockets?: number;
+    keepAlive?: boolean;
+    deserializeDates?: boolean;
+    allowRetries?: boolean;
+    maxRetries?: number;
+}
+export interface TypedResponse<T> {
+    statusCode: number;
+    result: T | null;
+    headers: http.IncomingHttpHeaders;
+}
diff --git a/lib/esnext/interfaces.js b/lib/esnext/interfaces.js
new file mode 100644
index 0000000000000000000000000000000000000000..c30bb68c19e2cd740ca33c9a652140394cf0247e
--- /dev/null
+++ b/lib/esnext/interfaces.js
@@ -0,0 +1,2 @@
+export {};
+//# sourceMappingURL=interfaces.js.map
\ No newline at end of file
diff --git a/lib/esnext/interfaces.js.map b/lib/esnext/interfaces.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..d5fcbe1fb69b4ca196dfd0c4f1f3f7494c6dd98d
--- /dev/null
+++ b/lib/esnext/interfaces.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"interfaces.js","sourceRoot":"","sources":["../../src/interfaces.ts"],"names":[],"mappings":""}
\ No newline at end of file
diff --git a/lib/esnext/package.json b/lib/esnext/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..6990891ff35dd464b19df096e6089004b0e31825
--- /dev/null
+++ b/lib/esnext/package.json
@@ -0,0 +1 @@
+{"type": "module"}
diff --git a/lib/esnext/proxy.d.ts b/lib/esnext/proxy.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4599865401c3df96253f09df0e742ac25caab193
--- /dev/null
+++ b/lib/esnext/proxy.d.ts
@@ -0,0 +1,2 @@
+export declare function getProxyUrl(reqUrl: URL): URL | undefined;
+export declare function checkBypass(reqUrl: URL): boolean;
diff --git a/lib/esnext/proxy.js b/lib/esnext/proxy.js
new file mode 100644
index 0000000000000000000000000000000000000000..7471d9617e06bae9d298b9b84397936e5054b6f1
--- /dev/null
+++ b/lib/esnext/proxy.js
@@ -0,0 +1,92 @@
+export function getProxyUrl(reqUrl) {
+    const usingSsl = reqUrl.protocol === 'https:';
+    if (checkBypass(reqUrl)) {
+        return undefined;
+    }
+    const proxyVar = (() => {
+        if (usingSsl) {
+            return process.env['https_proxy'] || process.env['HTTPS_PROXY'];
+        }
+        else {
+            return process.env['http_proxy'] || process.env['HTTP_PROXY'];
+        }
+    })();
+    if (proxyVar) {
+        try {
+            return new DecodedURL(proxyVar);
+        }
+        catch {
+            if (!proxyVar.startsWith('http://') && !proxyVar.startsWith('https://'))
+                return new DecodedURL(`http://${proxyVar}`);
+        }
+    }
+    else {
+        return undefined;
+    }
+}
+export function checkBypass(reqUrl) {
+    if (!reqUrl.hostname) {
+        return false;
+    }
+    const reqHost = reqUrl.hostname;
+    if (isLoopbackAddress(reqHost)) {
+        return true;
+    }
+    const noProxy = process.env['no_proxy'] || process.env['NO_PROXY'] || '';
+    if (!noProxy) {
+        return false;
+    }
+    // Determine the request port
+    let reqPort;
+    if (reqUrl.port) {
+        reqPort = Number(reqUrl.port);
+    }
+    else if (reqUrl.protocol === 'http:') {
+        reqPort = 80;
+    }
+    else if (reqUrl.protocol === 'https:') {
+        reqPort = 443;
+    }
+    // Format the request hostname and hostname with port
+    const upperReqHosts = [reqUrl.hostname.toUpperCase()];
+    if (typeof reqPort === 'number') {
+        upperReqHosts.push(`${upperReqHosts[0]}:${reqPort}`);
+    }
+    // Compare request host against noproxy
+    for (const upperNoProxyItem of noProxy
+        .split(',')
+        .map(x => x.trim().toUpperCase())
+        .filter(x => x)) {
+        if (upperNoProxyItem === '*' ||
+            upperReqHosts.some(x => x === upperNoProxyItem ||
+                x.endsWith(`.${upperNoProxyItem}`) ||
+                (upperNoProxyItem.startsWith('.') &&
+                    x.endsWith(`${upperNoProxyItem}`)))) {
+            return true;
+        }
+    }
+    return false;
+}
+function isLoopbackAddress(host) {
+    const hostLower = host.toLowerCase();
+    return (hostLower === 'localhost' ||
+        hostLower.startsWith('127.') ||
+        hostLower.startsWith('[::1]') ||
+        hostLower.startsWith('[0:0:0:0:0:0:0:1]'));
+}
+class DecodedURL extends URL {
+    _decodedUsername;
+    _decodedPassword;
+    constructor(url, base) {
+        super(url, base);
+        this._decodedUsername = decodeURIComponent(super.username);
+        this._decodedPassword = decodeURIComponent(super.password);
+    }
+    get username() {
+        return this._decodedUsername;
+    }
+    get password() {
+        return this._decodedPassword;
+    }
+}
+//# sourceMappingURL=proxy.js.map
\ No newline at end of file
diff --git a/lib/esnext/proxy.js.map b/lib/esnext/proxy.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..7b4c7f1882399b030e84b3a4fdb69d80776fd00a
--- /dev/null
+++ b/lib/esnext/proxy.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"proxy.js","sourceRoot":"","sources":["../../src/proxy.ts"],"names":[],"mappings":"AAAA,MAAM,UAAU,WAAW,CAAC,MAAW;IACrC,MAAM,QAAQ,GAAG,MAAM,CAAC,QAAQ,KAAK,QAAQ,CAAA;IAE7C,IAAI,WAAW,CAAC,MAAM,CAAC,EAAE;QACvB,OAAO,SAAS,CAAA;KACjB;IAED,MAAM,QAAQ,GAAG,CAAC,GAAG,EAAE;QACrB,IAAI,QAAQ,EAAE;YACZ,OAAO,OAAO,CAAC,GAAG,CAAC,aAAa,CAAC,IAAI,OAAO,CAAC,GAAG,CAAC,aAAa,CAAC,CAAA;SAChE;aAAM;YACL,OAAO,OAAO,CAAC,GAAG,CAAC,YAAY,CAAC,IAAI,OAAO,CAAC,GAAG,CAAC,YAAY,CAAC,CAAA;SAC9D;IACH,CAAC,CAAC,EAAE,CAAA;IAEJ,IAAI,QAAQ,EAAE;QACZ,IAAI;YACF,OAAO,IAAI,UAAU,CAAC,QAAQ,CAAC,CAAA;SAChC;QAAC,MAAM;YACN,IAAI,CAAC,QAAQ,CAAC,UAAU,CAAC,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,UAAU,CAAC,UAAU,CAAC;gBACrE,OAAO,IAAI,UAAU,CAAC,UAAU,QAAQ,EAAE,CAAC,CAAA;SAC9C;KACF;SAAM;QACL,OAAO,SAAS,CAAA;KACjB;AACH,CAAC;AAED,MAAM,UAAU,WAAW,CAAC,MAAW;IACrC,IAAI,CAAC,MAAM,CAAC,QAAQ,EAAE;QACpB,OAAO,KAAK,CAAA;KACb;IAED,MAAM,OAAO,GAAG,MAAM,CAAC,QAAQ,CAAA;IAC/B,IAAI,iBAAiB,CAAC,OAAO,CAAC,EAAE;QAC9B,OAAO,IAAI,CAAA;KACZ;IAED,MAAM,OAAO,GAAG,OAAO,CAAC,GAAG,CAAC,UAAU,CAAC,IAAI,OAAO,CAAC,GAAG,CAAC,UAAU,CAAC,IAAI,EAAE,CAAA;IACxE,IAAI,CAAC,OAAO,EAAE;QACZ,OAAO,KAAK,CAAA;KACb;IAED,6BAA6B;IAC7B,IAAI,OAA2B,CAAA;IAC/B,IAAI,MAAM,CAAC,IAAI,EAAE;QACf,OAAO,GAAG,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,CAAA;KAC9B;SAAM,IAAI,MAAM,CAAC,QAAQ,KAAK,OAAO,EAAE;QACtC,OAAO,GAAG,EAAE,CAAA;KACb;SAAM,IAAI,MAAM,CAAC,QAAQ,KAAK,QAAQ,EAAE;QACvC,OAAO,GAAG,GAAG,CAAA;KACd;IAED,qDAAqD;IACrD,MAAM,aAAa,GAAG,CAAC,MAAM,CAAC,QAAQ,CAAC,WAAW,EAAE,CAAC,CAAA;IACrD,IAAI,OAAO,OAAO,KAAK,QAAQ,EAAE;QAC/B,aAAa,CAAC,IAAI,CAAC,GAAG,aAAa,CAAC,CAAC,CAAC,IAAI,OAAO,EAAE,CAAC,CAAA;KACrD;IAED,uCAAuC;IACvC,KAAK,MAAM,gBAAgB,IAAI,OAAO;SACnC,KAAK,CAAC,GAAG,CAAC;SACV,GAAG,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,EAAE,CAAC,WAAW,EAAE,CAAC;SAChC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,EAAE;QACjB,IACE,gBAAgB,KAAK,GAAG;YACxB,aAAa,CAAC,IAAI,CAChB,CAAC,CAAC,EAAE,CACF,CAAC,KAAK,gBAAgB;gBACtB,CAAC,CAAC,QAAQ,CAAC,IAAI,gBAAgB,EAAE,CAAC;gBAClC,CAAC,gBAAgB,CAAC,UAAU,CAAC,GAAG,CAAC;oBAC/B,CAAC,CAAC,QAAQ,CAAC,GAAG,gBAAgB,EAAE,CAAC,CAAC,CACvC,EACD;YACA,OAAO,IAAI,CAAA;SACZ;KACF;IAED,OAAO,KAAK,CAAA;AACd,CAAC;AAED,SAAS,iBAAiB,CAAC,IAAY;IACrC,MAAM,SAAS,GAAG,IAAI,CAAC,WAAW,EAAE,CAAA;IACpC,OAAO,CACL,SAAS,KAAK,WAAW;QACzB,SAAS,CAAC,UAAU,CAAC,MAAM,CAAC;QAC5B,SAAS,CAAC,UAAU,CAAC,OAAO,CAAC;QAC7B,SAAS,CAAC,UAAU,CAAC,mBAAmB,CAAC,CAC1C,CAAA;AACH,CAAC;AAED,MAAM,UAAW,SAAQ,GAAG;IAClB,gBAAgB,CAAQ;IACxB,gBAAgB,CAAQ;IAEhC,YAAY,GAAiB,EAAE,IAAmB;QAChD,KAAK,CAAC,GAAG,EAAE,IAAI,CAAC,CAAA;QAChB,IAAI,CAAC,gBAAgB,GAAG,kBAAkB,CAAC,KAAK,CAAC,QAAQ,CAAC,CAAA;QAC1D,IAAI,CAAC,gBAAgB,GAAG,kBAAkB,CAAC,KAAK,CAAC,QAAQ,CAAC,CAAA;IAC5D,CAAC;IAED,IAAI,QAAQ;QACV,OAAO,IAAI,CAAC,gBAAgB,CAAA;IAC9B,CAAC;IAED,IAAI,QAAQ;QACV,OAAO,IAAI,CAAC,gBAAgB,CAAA;IAC9B,CAAC;CACF"}
\ No newline at end of file
diff --git a/lib/index.d.ts b/lib/index.d.ts
index 38db7000a6214549a9305331ea2d33bbceca9d5d..9caa09694850d35d371beda2586c32bc65690dba 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -3,7 +3,7 @@
 /// <reference types="node" />
 import * as http from 'http';
 import * as ifm from './interfaces';
-import { ProxyAgent } from 'undici';
+import type ProxyAgent from 'undici/types/proxy-agent';
 export declare enum HttpCodes {
     OK = 200,
     MultipleChoices = 300,
@@ -119,7 +119,7 @@ export declare class HttpClient {
      * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com
      */
     getAgent(serverUrl: string): http.Agent;
-    getAgentDispatcher(serverUrl: string): ProxyAgent | undefined;
+    getAgentDispatcher(serverUrl: string): Promise<ProxyAgent | undefined>;
     private _prepareRequest;
     private _mergeHeaders;
     private _getExistingOrDefaultHeader;
diff --git a/lib/index.js b/lib/index.js
index c337ca6e22453e6e8f04660ae0991e3f49833e2b..50b67c0de3c81925693ff29cfb49d691d087991a 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -38,7 +38,6 @@ const http = __importStar(require("http"));
 const https = __importStar(require("https"));
 const pm = __importStar(require("./proxy"));
 const tunnel = __importStar(require("tunnel"));
-const undici_1 = require("undici");
 var HttpCodes;
 (function (HttpCodes) {
     HttpCodes[HttpCodes["OK"] = 200] = "OK";
@@ -447,13 +446,15 @@ class HttpClient {
         return this._getAgent(parsedUrl);
     }
     getAgentDispatcher(serverUrl) {
-        const parsedUrl = new URL(serverUrl);
-        const proxyUrl = pm.getProxyUrl(parsedUrl);
-        const useProxy = proxyUrl && proxyUrl.hostname;
-        if (!useProxy) {
-            return;
-        }
-        return this._getProxyAgentDispatcher(parsedUrl, proxyUrl);
+        return __awaiter(this, void 0, void 0, function* () {
+            const parsedUrl = new URL(serverUrl);
+            const proxyUrl = pm.getProxyUrl(parsedUrl);
+            const useProxy = proxyUrl && proxyUrl.hostname;
+            if (!useProxy) {
+                return undefined;
+            }
+            return yield this._getProxyAgentDispatcher(parsedUrl, proxyUrl);
+        });
     }
     _prepareRequest(method, requestUrl, headers) {
         const info = {};
@@ -551,28 +552,32 @@ class HttpClient {
         return agent;
     }
     _getProxyAgentDispatcher(parsedUrl, proxyUrl) {
-        let proxyAgent;
-        if (this._keepAlive) {
-            proxyAgent = this._proxyAgentDispatcher;
-        }
-        // if agent is already assigned use that agent.
-        if (proxyAgent) {
+        return __awaiter(this, void 0, void 0, function* () {
+            let proxyAgent;
+            if (this._keepAlive) {
+                proxyAgent = this._proxyAgentDispatcher;
+            }
+            // if agent is already assigned use that agent.
+            if (proxyAgent) {
+                return proxyAgent;
+            }
+            const usingSsl = parsedUrl.protocol === 'https:';
+            // Lazy load ProxyAgent to avoid bundling all the undici
+            const ProxyAgent = (yield Promise.resolve().then(() => __importStar(require('undici/lib/proxy-agent'))));
+            proxyAgent = new ProxyAgent(Object.assign({ uri: proxyUrl.href, pipelining: !this._keepAlive ? 0 : 1 }, ((proxyUrl.username || proxyUrl.password) && {
+                token: `Basic ${Buffer.from(`${proxyUrl.username}:${proxyUrl.password}`).toString('base64')}`
+            })));
+            this._proxyAgentDispatcher = proxyAgent;
+            if (usingSsl && this._ignoreSslError) {
+                // we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process
+                // http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options
+                // we have to cast it to any and change it directly
+                proxyAgent.options = Object.assign(proxyAgent.options.requestTls || {}, {
+                    rejectUnauthorized: false
+                });
+            }
             return proxyAgent;
-        }
-        const usingSsl = parsedUrl.protocol === 'https:';
-        proxyAgent = new undici_1.ProxyAgent(Object.assign({ uri: proxyUrl.href, pipelining: !this._keepAlive ? 0 : 1 }, ((proxyUrl.username || proxyUrl.password) && {
-            token: `Basic ${Buffer.from(`${proxyUrl.username}:${proxyUrl.password}`).toString('base64')}`
-        })));
-        this._proxyAgentDispatcher = proxyAgent;
-        if (usingSsl && this._ignoreSslError) {
-            // we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process
-            // http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options
-            // we have to cast it to any and change it directly
-            proxyAgent.options = Object.assign(proxyAgent.options.requestTls || {}, {
-                rejectUnauthorized: false
-            });
-        }
-        return proxyAgent;
+        });
     }
     _performExponentialBackoff(retryNumber) {
         return __awaiter(this, void 0, void 0, function* () {
diff --git a/lib/index.js.map b/lib/index.js.map
index 2a0d1a8251955b2f974b44741f3626a1021dd2ce..4201700dc88195930ce79ed5d206da739f106df3 100644
--- a/lib/index.js.map
+++ b/lib/index.js.map
@@ -1 +1 @@
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\ No newline at end of file
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diff --git a/package.json b/package.json
index 3960a83a5f7dec81a8dfa644663d611f81f3c358..c4d3926a767d21f6fbc0d456732fdaa8566080cd 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
   "homepage": "https://github.com/actions/toolkit/tree/main/packages/http-client",
   "license": "MIT",
   "main": "lib/index.js",
+  "module": "lib/esnext/index.js",
   "types": "lib/index.d.ts",
   "directories": {
     "lib": "lib",
@@ -17,6 +18,7 @@
   },
   "files": [
     "lib",
+    "src",
     "!.DS_Store"
   ],
   "publishConfig": {
@@ -30,10 +32,12 @@
   "scripts": {
     "audit-moderate": "npm install && npm audit --json --audit-level=moderate > audit.json",
     "test": "echo \"Error: run tests from root\" && exit 1",
-    "build": "tsc",
+    "build": "npm run tsc",
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts",
-    "tsc": "tsc"
+    "tsc-esnext": "tsc -p ./tsconfig.esnext.json && echo '{\"type\": \"module\"}' > ./lib/esnext/package.json",
+    "tsc-cjs": "tsc && npm run tsc-esnext",
+    "tsc": "npm run tsc-cjs && npm run tsc-esnext"
   },
   "bugs": {
     "url": "https://github.com/actions/toolkit/issues"
diff --git a/src/auth.ts b/src/auth.ts
new file mode 100644
index 0000000000000000000000000000000000000000..58938ac4c50b0ea1ad6e06d33c0a6b82f90bb157
--- /dev/null
+++ b/src/auth.ts
@@ -0,0 +1,87 @@
+import * as http from 'http'
+import * as ifm from './interfaces'
+import {HttpClientResponse} from './index'
+
+export class BasicCredentialHandler implements ifm.RequestHandler {
+  username: string
+  password: string
+
+  constructor(username: string, password: string) {
+    this.username = username
+    this.password = password
+  }
+
+  prepareRequest(options: http.RequestOptions): void {
+    if (!options.headers) {
+      throw Error('The request has no headers')
+    }
+    options.headers['Authorization'] = `Basic ${Buffer.from(
+      `${this.username}:${this.password}`
+    ).toString('base64')}`
+  }
+
+  // This handler cannot handle 401
+  canHandleAuthentication(): boolean {
+    return false
+  }
+
+  async handleAuthentication(): Promise<HttpClientResponse> {
+    throw new Error('not implemented')
+  }
+}
+
+export class BearerCredentialHandler implements ifm.RequestHandler {
+  token: string
+
+  constructor(token: string) {
+    this.token = token
+  }
+
+  // currently implements pre-authorization
+  // TODO: support preAuth = false where it hooks on 401
+  prepareRequest(options: http.RequestOptions): void {
+    if (!options.headers) {
+      throw Error('The request has no headers')
+    }
+    options.headers['Authorization'] = `Bearer ${this.token}`
+  }
+
+  // This handler cannot handle 401
+  canHandleAuthentication(): boolean {
+    return false
+  }
+
+  async handleAuthentication(): Promise<HttpClientResponse> {
+    throw new Error('not implemented')
+  }
+}
+
+export class PersonalAccessTokenCredentialHandler
+  implements ifm.RequestHandler
+{
+  token: string
+
+  constructor(token: string) {
+    this.token = token
+  }
+
+  // currently implements pre-authorization
+  // TODO: support preAuth = false where it hooks on 401
+  prepareRequest(options: http.RequestOptions): void {
+    if (!options.headers) {
+      throw Error('The request has no headers')
+    }
+    options.headers['Authorization'] = `Basic ${Buffer.from(
+      `PAT:${this.token}`
+    ).toString('base64')}`
+  }
+
+  // This handler cannot handle 401
+  canHandleAuthentication(): boolean {
+    return false
+  }
+
+  async handleAuthentication(): Promise<HttpClientResponse> {
+    throw new Error('not implemented')
+  }
+}
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b46111b8d5112b7e7d5ada3dbfde61b57ec99f37
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,840 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+
+import * as http from 'http'
+import * as https from 'https'
+import * as ifm from './interfaces'
+import * as net from 'net'
+import * as pm from './proxy'
+import * as tunnel from 'tunnel'
+import type ProxyAgent from 'undici/types/proxy-agent'
+
+export enum HttpCodes {
+  OK = 200,
+  MultipleChoices = 300,
+  MovedPermanently = 301,
+  ResourceMoved = 302,
+  SeeOther = 303,
+  NotModified = 304,
+  UseProxy = 305,
+  SwitchProxy = 306,
+  TemporaryRedirect = 307,
+  PermanentRedirect = 308,
+  BadRequest = 400,
+  Unauthorized = 401,
+  PaymentRequired = 402,
+  Forbidden = 403,
+  NotFound = 404,
+  MethodNotAllowed = 405,
+  NotAcceptable = 406,
+  ProxyAuthenticationRequired = 407,
+  RequestTimeout = 408,
+  Conflict = 409,
+  Gone = 410,
+  TooManyRequests = 429,
+  InternalServerError = 500,
+  NotImplemented = 501,
+  BadGateway = 502,
+  ServiceUnavailable = 503,
+  GatewayTimeout = 504
+}
+
+export enum Headers {
+  Accept = 'accept',
+  ContentType = 'content-type'
+}
+
+export enum MediaTypes {
+  ApplicationJson = 'application/json'
+}
+
+/**
+ * Returns the proxy URL, depending upon the supplied url and proxy environment variables.
+ * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com
+ */
+export function getProxyUrl(serverUrl: string): string {
+  const proxyUrl = pm.getProxyUrl(new URL(serverUrl))
+  return proxyUrl ? proxyUrl.href : ''
+}
+
+const HttpRedirectCodes: number[] = [
+  HttpCodes.MovedPermanently,
+  HttpCodes.ResourceMoved,
+  HttpCodes.SeeOther,
+  HttpCodes.TemporaryRedirect,
+  HttpCodes.PermanentRedirect
+]
+const HttpResponseRetryCodes: number[] = [
+  HttpCodes.BadGateway,
+  HttpCodes.ServiceUnavailable,
+  HttpCodes.GatewayTimeout
+]
+const RetryableHttpVerbs: string[] = ['OPTIONS', 'GET', 'DELETE', 'HEAD']
+const ExponentialBackoffCeiling = 10
+const ExponentialBackoffTimeSlice = 5
+
+export class HttpClientError extends Error {
+  constructor(message: string, statusCode: number) {
+    super(message)
+    this.name = 'HttpClientError'
+    this.statusCode = statusCode
+    Object.setPrototypeOf(this, HttpClientError.prototype)
+  }
+
+  statusCode: number
+  result?: any
+}
+
+export class HttpClientResponse {
+  constructor(message: http.IncomingMessage) {
+    this.message = message
+  }
+
+  message: http.IncomingMessage
+  async readBody(): Promise<string> {
+    return new Promise<string>(async resolve => {
+      let output = Buffer.alloc(0)
+
+      this.message.on('data', (chunk: Buffer) => {
+        output = Buffer.concat([output, chunk])
+      })
+
+      this.message.on('end', () => {
+        resolve(output.toString())
+      })
+    })
+  }
+
+  async readBodyBuffer?(): Promise<Buffer> {
+    return new Promise<Buffer>(async resolve => {
+      const chunks: Buffer[] = []
+
+      this.message.on('data', (chunk: Buffer) => {
+        chunks.push(chunk)
+      })
+
+      this.message.on('end', () => {
+        resolve(Buffer.concat(chunks))
+      })
+    })
+  }
+}
+
+export function isHttps(requestUrl: string): boolean {
+  const parsedUrl: URL = new URL(requestUrl)
+  return parsedUrl.protocol === 'https:'
+}
+
+export class HttpClient {
+  userAgent: string | undefined
+  handlers: ifm.RequestHandler[]
+  requestOptions: ifm.RequestOptions | undefined
+
+  private _ignoreSslError = false
+  private _socketTimeout: number | undefined
+  private _allowRedirects = true
+  private _allowRedirectDowngrade = false
+  private _maxRedirects = 50
+  private _allowRetries = false
+  private _maxRetries = 1
+  private _agent: any
+  private _proxyAgent: any
+  private _proxyAgentDispatcher: any
+  private _keepAlive = false
+  private _disposed = false
+
+  constructor(
+    userAgent?: string,
+    handlers?: ifm.RequestHandler[],
+    requestOptions?: ifm.RequestOptions
+  ) {
+    this.userAgent = userAgent
+    this.handlers = handlers || []
+    this.requestOptions = requestOptions
+    if (requestOptions) {
+      if (requestOptions.ignoreSslError != null) {
+        this._ignoreSslError = requestOptions.ignoreSslError
+      }
+
+      this._socketTimeout = requestOptions.socketTimeout
+
+      if (requestOptions.allowRedirects != null) {
+        this._allowRedirects = requestOptions.allowRedirects
+      }
+
+      if (requestOptions.allowRedirectDowngrade != null) {
+        this._allowRedirectDowngrade = requestOptions.allowRedirectDowngrade
+      }
+
+      if (requestOptions.maxRedirects != null) {
+        this._maxRedirects = Math.max(requestOptions.maxRedirects, 0)
+      }
+
+      if (requestOptions.keepAlive != null) {
+        this._keepAlive = requestOptions.keepAlive
+      }
+
+      if (requestOptions.allowRetries != null) {
+        this._allowRetries = requestOptions.allowRetries
+      }
+
+      if (requestOptions.maxRetries != null) {
+        this._maxRetries = requestOptions.maxRetries
+      }
+    }
+  }
+
+  async options(
+    requestUrl: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse> {
+    return this.request('OPTIONS', requestUrl, null, additionalHeaders || {})
+  }
+
+  async get(
+    requestUrl: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse> {
+    return this.request('GET', requestUrl, null, additionalHeaders || {})
+  }
+
+  async del(
+    requestUrl: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse> {
+    return this.request('DELETE', requestUrl, null, additionalHeaders || {})
+  }
+
+  async post(
+    requestUrl: string,
+    data: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse> {
+    return this.request('POST', requestUrl, data, additionalHeaders || {})
+  }
+
+  async patch(
+    requestUrl: string,
+    data: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse> {
+    return this.request('PATCH', requestUrl, data, additionalHeaders || {})
+  }
+
+  async put(
+    requestUrl: string,
+    data: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse> {
+    return this.request('PUT', requestUrl, data, additionalHeaders || {})
+  }
+
+  async head(
+    requestUrl: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse> {
+    return this.request('HEAD', requestUrl, null, additionalHeaders || {})
+  }
+
+  async sendStream(
+    verb: string,
+    requestUrl: string,
+    stream: NodeJS.ReadableStream,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse> {
+    return this.request(verb, requestUrl, stream, additionalHeaders)
+  }
+
+  /**
+   * Gets a typed object from an endpoint
+   * Be aware that not found returns a null.  Other errors (4xx, 5xx) reject the promise
+   */
+  async getJson<T>(
+    requestUrl: string,
+    additionalHeaders: http.OutgoingHttpHeaders = {}
+  ): Promise<ifm.TypedResponse<T>> {
+    additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(
+      additionalHeaders,
+      Headers.Accept,
+      MediaTypes.ApplicationJson
+    )
+    const res: HttpClientResponse = await this.get(
+      requestUrl,
+      additionalHeaders
+    )
+    return this._processResponse<T>(res, this.requestOptions)
+  }
+
+  async postJson<T>(
+    requestUrl: string,
+    obj: any,
+    additionalHeaders: http.OutgoingHttpHeaders = {}
+  ): Promise<ifm.TypedResponse<T>> {
+    const data: string = JSON.stringify(obj, null, 2)
+    additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(
+      additionalHeaders,
+      Headers.Accept,
+      MediaTypes.ApplicationJson
+    )
+    additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(
+      additionalHeaders,
+      Headers.ContentType,
+      MediaTypes.ApplicationJson
+    )
+    const res: HttpClientResponse = await this.post(
+      requestUrl,
+      data,
+      additionalHeaders
+    )
+    return this._processResponse<T>(res, this.requestOptions)
+  }
+
+  async putJson<T>(
+    requestUrl: string,
+    obj: any,
+    additionalHeaders: http.OutgoingHttpHeaders = {}
+  ): Promise<ifm.TypedResponse<T>> {
+    const data: string = JSON.stringify(obj, null, 2)
+    additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(
+      additionalHeaders,
+      Headers.Accept,
+      MediaTypes.ApplicationJson
+    )
+    additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(
+      additionalHeaders,
+      Headers.ContentType,
+      MediaTypes.ApplicationJson
+    )
+    const res: HttpClientResponse = await this.put(
+      requestUrl,
+      data,
+      additionalHeaders
+    )
+    return this._processResponse<T>(res, this.requestOptions)
+  }
+
+  async patchJson<T>(
+    requestUrl: string,
+    obj: any,
+    additionalHeaders: http.OutgoingHttpHeaders = {}
+  ): Promise<ifm.TypedResponse<T>> {
+    const data: string = JSON.stringify(obj, null, 2)
+    additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(
+      additionalHeaders,
+      Headers.Accept,
+      MediaTypes.ApplicationJson
+    )
+    additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(
+      additionalHeaders,
+      Headers.ContentType,
+      MediaTypes.ApplicationJson
+    )
+    const res: HttpClientResponse = await this.patch(
+      requestUrl,
+      data,
+      additionalHeaders
+    )
+    return this._processResponse<T>(res, this.requestOptions)
+  }
+
+  /**
+   * Makes a raw http request.
+   * All other methods such as get, post, patch, and request ultimately call this.
+   * Prefer get, del, post and patch
+   */
+  async request(
+    verb: string,
+    requestUrl: string,
+    data: string | NodeJS.ReadableStream | null,
+    headers?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse> {
+    if (this._disposed) {
+      throw new Error('Client has already been disposed.')
+    }
+
+    const parsedUrl = new URL(requestUrl)
+    let info: ifm.RequestInfo = this._prepareRequest(verb, parsedUrl, headers)
+
+    // Only perform retries on reads since writes may not be idempotent.
+    const maxTries: number =
+      this._allowRetries && RetryableHttpVerbs.includes(verb)
+        ? this._maxRetries + 1
+        : 1
+    let numTries = 0
+
+    let response: HttpClientResponse | undefined
+    do {
+      response = await this.requestRaw(info, data)
+
+      // Check if it's an authentication challenge
+      if (
+        response &&
+        response.message &&
+        response.message.statusCode === HttpCodes.Unauthorized
+      ) {
+        let authenticationHandler: ifm.RequestHandler | undefined
+
+        for (const handler of this.handlers) {
+          if (handler.canHandleAuthentication(response)) {
+            authenticationHandler = handler
+            break
+          }
+        }
+
+        if (authenticationHandler) {
+          return authenticationHandler.handleAuthentication(this, info, data)
+        } else {
+          // We have received an unauthorized response but have no handlers to handle it.
+          // Let the response return to the caller.
+          return response
+        }
+      }
+
+      let redirectsRemaining: number = this._maxRedirects
+      while (
+        response.message.statusCode &&
+        HttpRedirectCodes.includes(response.message.statusCode) &&
+        this._allowRedirects &&
+        redirectsRemaining > 0
+      ) {
+        const redirectUrl: string | undefined =
+          response.message.headers['location']
+        if (!redirectUrl) {
+          // if there's no location to redirect to, we won't
+          break
+        }
+        const parsedRedirectUrl = new URL(redirectUrl)
+        if (
+          parsedUrl.protocol === 'https:' &&
+          parsedUrl.protocol !== parsedRedirectUrl.protocol &&
+          !this._allowRedirectDowngrade
+        ) {
+          throw new Error(
+            'Redirect from HTTPS to HTTP protocol. This downgrade is not allowed for security reasons. If you want to allow this behavior, set the allowRedirectDowngrade option to true.'
+          )
+        }
+
+        // we need to finish reading the response before reassigning response
+        // which will leak the open socket.
+        await response.readBody()
+
+        // strip authorization header if redirected to a different hostname
+        if (parsedRedirectUrl.hostname !== parsedUrl.hostname) {
+          for (const header in headers) {
+            // header names are case insensitive
+            if (header.toLowerCase() === 'authorization') {
+              delete headers[header]
+            }
+          }
+        }
+
+        // let's make the request with the new redirectUrl
+        info = this._prepareRequest(verb, parsedRedirectUrl, headers)
+        response = await this.requestRaw(info, data)
+        redirectsRemaining--
+      }
+
+      if (
+        !response.message.statusCode ||
+        !HttpResponseRetryCodes.includes(response.message.statusCode)
+      ) {
+        // If not a retry code, return immediately instead of retrying
+        return response
+      }
+
+      numTries += 1
+
+      if (numTries < maxTries) {
+        await response.readBody()
+        await this._performExponentialBackoff(numTries)
+      }
+    } while (numTries < maxTries)
+
+    return response
+  }
+
+  /**
+   * Needs to be called if keepAlive is set to true in request options.
+   */
+  dispose(): void {
+    if (this._agent) {
+      this._agent.destroy()
+    }
+
+    this._disposed = true
+  }
+
+  /**
+   * Raw request.
+   * @param info
+   * @param data
+   */
+  async requestRaw(
+    info: ifm.RequestInfo,
+    data: string | NodeJS.ReadableStream | null
+  ): Promise<HttpClientResponse> {
+    return new Promise<HttpClientResponse>((resolve, reject) => {
+      function callbackForResult(err?: Error, res?: HttpClientResponse): void {
+        if (err) {
+          reject(err)
+        } else if (!res) {
+          // If `err` is not passed, then `res` must be passed.
+          reject(new Error('Unknown error'))
+        } else {
+          resolve(res)
+        }
+      }
+
+      this.requestRawWithCallback(info, data, callbackForResult)
+    })
+  }
+
+  /**
+   * Raw request with callback.
+   * @param info
+   * @param data
+   * @param onResult
+   */
+  requestRawWithCallback(
+    info: ifm.RequestInfo,
+    data: string | NodeJS.ReadableStream | null,
+    onResult: (err?: Error, res?: HttpClientResponse) => void
+  ): void {
+    if (typeof data === 'string') {
+      if (!info.options.headers) {
+        info.options.headers = {}
+      }
+      info.options.headers['Content-Length'] = Buffer.byteLength(data, 'utf8')
+    }
+
+    let callbackCalled = false
+    function handleResult(err?: Error, res?: HttpClientResponse): void {
+      if (!callbackCalled) {
+        callbackCalled = true
+        onResult(err, res)
+      }
+    }
+
+    const req: http.ClientRequest = info.httpModule.request(
+      info.options,
+      (msg: http.IncomingMessage) => {
+        const res: HttpClientResponse = new HttpClientResponse(msg)
+        handleResult(undefined, res)
+      }
+    )
+
+    let socket: net.Socket
+    req.on('socket', sock => {
+      socket = sock
+    })
+
+    // If we ever get disconnected, we want the socket to timeout eventually
+    req.setTimeout(this._socketTimeout || 3 * 60000, () => {
+      if (socket) {
+        socket.end()
+      }
+      handleResult(new Error(`Request timeout: ${info.options.path}`))
+    })
+
+    req.on('error', function (err) {
+      // err has statusCode property
+      // res should have headers
+      handleResult(err)
+    })
+
+    if (data && typeof data === 'string') {
+      req.write(data, 'utf8')
+    }
+
+    if (data && typeof data !== 'string') {
+      data.on('close', function () {
+        req.end()
+      })
+
+      data.pipe(req)
+    } else {
+      req.end()
+    }
+  }
+
+  /**
+   * Gets an http agent. This function is useful when you need an http agent that handles
+   * routing through a proxy server - depending upon the url and proxy environment variables.
+   * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com
+   */
+  getAgent(serverUrl: string): http.Agent {
+    const parsedUrl = new URL(serverUrl)
+    return this._getAgent(parsedUrl)
+  }
+
+  async getAgentDispatcher(serverUrl: string): Promise<ProxyAgent | undefined> {
+    const parsedUrl = new URL(serverUrl)
+    const proxyUrl = pm.getProxyUrl(parsedUrl)
+    const useProxy = proxyUrl && proxyUrl.hostname
+    if (!useProxy) {
+      return undefined
+    }
+
+    return await this._getProxyAgentDispatcher(parsedUrl, proxyUrl)
+  }
+
+  private _prepareRequest(
+    method: string,
+    requestUrl: URL,
+    headers?: http.OutgoingHttpHeaders
+  ): ifm.RequestInfo {
+    const info: ifm.RequestInfo = <ifm.RequestInfo>{}
+
+    info.parsedUrl = requestUrl
+    const usingSsl: boolean = info.parsedUrl.protocol === 'https:'
+    info.httpModule = usingSsl ? https : http
+    const defaultPort: number = usingSsl ? 443 : 80
+
+    info.options = <http.RequestOptions>{}
+    info.options.host = info.parsedUrl.hostname
+    info.options.port = info.parsedUrl.port
+      ? parseInt(info.parsedUrl.port)
+      : defaultPort
+    info.options.path =
+      (info.parsedUrl.pathname || '') + (info.parsedUrl.search || '')
+    info.options.method = method
+    info.options.headers = this._mergeHeaders(headers)
+    if (this.userAgent != null) {
+      info.options.headers['user-agent'] = this.userAgent
+    }
+
+    info.options.agent = this._getAgent(info.parsedUrl)
+
+    // gives handlers an opportunity to participate
+    if (this.handlers) {
+      for (const handler of this.handlers) {
+        handler.prepareRequest(info.options)
+      }
+    }
+
+    return info
+  }
+
+  private _mergeHeaders(
+    headers?: http.OutgoingHttpHeaders
+  ): http.OutgoingHttpHeaders {
+    if (this.requestOptions && this.requestOptions.headers) {
+      return Object.assign(
+        {},
+        lowercaseKeys(this.requestOptions.headers),
+        lowercaseKeys(headers || {})
+      )
+    }
+
+    return lowercaseKeys(headers || {})
+  }
+
+  private _getExistingOrDefaultHeader(
+    additionalHeaders: http.OutgoingHttpHeaders,
+    header: string,
+    _default: string
+  ): string | number | string[] {
+    let clientHeader: string | undefined
+    if (this.requestOptions && this.requestOptions.headers) {
+      clientHeader = lowercaseKeys(this.requestOptions.headers)[header]
+    }
+    return additionalHeaders[header] || clientHeader || _default
+  }
+
+  private _getAgent(parsedUrl: URL): http.Agent {
+    let agent
+    const proxyUrl = pm.getProxyUrl(parsedUrl)
+    const useProxy = proxyUrl && proxyUrl.hostname
+
+    if (this._keepAlive && useProxy) {
+      agent = this._proxyAgent
+    }
+
+    if (!useProxy) {
+      agent = this._agent
+    }
+
+    // if agent is already assigned use that agent.
+    if (agent) {
+      return agent
+    }
+
+    const usingSsl = parsedUrl.protocol === 'https:'
+    let maxSockets = 100
+    if (this.requestOptions) {
+      maxSockets = this.requestOptions.maxSockets || http.globalAgent.maxSockets
+    }
+
+    // This is `useProxy` again, but we need to check `proxyURl` directly for TypeScripts's flow analysis.
+    if (proxyUrl && proxyUrl.hostname) {
+      const agentOptions = {
+        maxSockets,
+        keepAlive: this._keepAlive,
+        proxy: {
+          ...((proxyUrl.username || proxyUrl.password) && {
+            proxyAuth: `${proxyUrl.username}:${proxyUrl.password}`
+          }),
+          host: proxyUrl.hostname,
+          port: proxyUrl.port
+        }
+      }
+
+      let tunnelAgent: Function
+      const overHttps = proxyUrl.protocol === 'https:'
+      if (usingSsl) {
+        tunnelAgent = overHttps ? tunnel.httpsOverHttps : tunnel.httpsOverHttp
+      } else {
+        tunnelAgent = overHttps ? tunnel.httpOverHttps : tunnel.httpOverHttp
+      }
+
+      agent = tunnelAgent(agentOptions)
+      this._proxyAgent = agent
+    }
+
+    // if tunneling agent isn't assigned create a new agent
+    if (!agent) {
+      const options = {keepAlive: this._keepAlive, maxSockets}
+      agent = usingSsl ? new https.Agent(options) : new http.Agent(options)
+      this._agent = agent
+    }
+
+    if (usingSsl && this._ignoreSslError) {
+      // we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process
+      // http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options
+      // we have to cast it to any and change it directly
+      agent.options = Object.assign(agent.options || {}, {
+        rejectUnauthorized: false
+      })
+    }
+
+    return agent
+  }
+
+  private async _getProxyAgentDispatcher(
+    parsedUrl: URL,
+    proxyUrl: URL
+  ): Promise<ProxyAgent> {
+    let proxyAgent
+
+    if (this._keepAlive) {
+      proxyAgent = this._proxyAgentDispatcher
+    }
+
+    // if agent is already assigned use that agent.
+    if (proxyAgent) {
+      return proxyAgent
+    }
+
+    const usingSsl = parsedUrl.protocol === 'https:'
+
+    // Lazy load ProxyAgent to avoid bundling all the undici
+    const ProxyAgent = (await import(
+      'undici/lib/proxy-agent'
+    )) as typeof import('undici/types/proxy-agent').default
+
+    proxyAgent = new ProxyAgent({
+      uri: proxyUrl.href,
+      pipelining: !this._keepAlive ? 0 : 1,
+      ...((proxyUrl.username || proxyUrl.password) && {
+        token: `Basic ${Buffer.from(
+          `${proxyUrl.username}:${proxyUrl.password}`
+        ).toString('base64')}`
+      })
+    })
+    this._proxyAgentDispatcher = proxyAgent
+
+    if (usingSsl && this._ignoreSslError) {
+      // we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process
+      // http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options
+      // we have to cast it to any and change it directly
+      proxyAgent.options = Object.assign(proxyAgent.options.requestTls || {}, {
+        rejectUnauthorized: false
+      })
+    }
+
+    return proxyAgent
+  }
+
+  private async _performExponentialBackoff(retryNumber: number): Promise<void> {
+    retryNumber = Math.min(ExponentialBackoffCeiling, retryNumber)
+    const ms: number = ExponentialBackoffTimeSlice * Math.pow(2, retryNumber)
+    return new Promise(resolve => setTimeout(() => resolve(), ms))
+  }
+
+  private async _processResponse<T>(
+    res: HttpClientResponse,
+    options?: ifm.RequestOptions
+  ): Promise<ifm.TypedResponse<T>> {
+    return new Promise<ifm.TypedResponse<T>>(async (resolve, reject) => {
+      const statusCode = res.message.statusCode || 0
+
+      const response: ifm.TypedResponse<T> = {
+        statusCode,
+        result: null,
+        headers: {}
+      }
+
+      // not found leads to null obj returned
+      if (statusCode === HttpCodes.NotFound) {
+        resolve(response)
+      }
+
+      // get the result from the body
+
+      function dateTimeDeserializer(key: any, value: any): any {
+        if (typeof value === 'string') {
+          const a = new Date(value)
+          if (!isNaN(a.valueOf())) {
+            return a
+          }
+        }
+
+        return value
+      }
+
+      let obj: any
+      let contents: string | undefined
+
+      try {
+        contents = await res.readBody()
+        if (contents && contents.length > 0) {
+          if (options && options.deserializeDates) {
+            obj = JSON.parse(contents, dateTimeDeserializer)
+          } else {
+            obj = JSON.parse(contents)
+          }
+
+          response.result = obj
+        }
+
+        response.headers = res.message.headers
+      } catch (err) {
+        // Invalid resource (contents not json);  leaving result obj null
+      }
+
+      // note that 3xx redirects are handled by the http layer.
+      if (statusCode > 299) {
+        let msg: string
+
+        // if exception/error in body, attempt to get better error
+        if (obj && obj.message) {
+          msg = obj.message
+        } else if (contents && contents.length > 0) {
+          // it may be the case that the exception is in the body message as string
+          msg = contents
+        } else {
+          msg = `Failed request: (${statusCode})`
+        }
+
+        const err = new HttpClientError(msg, statusCode)
+        err.result = response.result
+
+        reject(err)
+      } else {
+        resolve(response)
+      }
+    })
+  }
+}
+
+const lowercaseKeys = (obj: {[index: string]: any}): any =>
+  Object.keys(obj).reduce((c: any, k) => ((c[k.toLowerCase()] = obj[k]), c), {})
diff --git a/src/interfaces.ts b/src/interfaces.ts
new file mode 100644
index 0000000000000000000000000000000000000000..96b0fec7a99e80c5f77c02523ac36e7f70c8eb2d
--- /dev/null
+++ b/src/interfaces.ts
@@ -0,0 +1,91 @@
+import * as http from 'http'
+import * as https from 'https'
+import {HttpClientResponse} from './index'
+
+export interface HttpClient {
+  options(
+    requestUrl: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse>
+  get(
+    requestUrl: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse>
+  del(
+    requestUrl: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse>
+  post(
+    requestUrl: string,
+    data: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse>
+  patch(
+    requestUrl: string,
+    data: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse>
+  put(
+    requestUrl: string,
+    data: string,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse>
+  sendStream(
+    verb: string,
+    requestUrl: string,
+    stream: NodeJS.ReadableStream,
+    additionalHeaders?: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse>
+  request(
+    verb: string,
+    requestUrl: string,
+    data: string | NodeJS.ReadableStream,
+    headers: http.OutgoingHttpHeaders
+  ): Promise<HttpClientResponse>
+  requestRaw(
+    info: RequestInfo,
+    data: string | NodeJS.ReadableStream
+  ): Promise<HttpClientResponse>
+  requestRawWithCallback(
+    info: RequestInfo,
+    data: string | NodeJS.ReadableStream,
+    onResult: (err?: Error, res?: HttpClientResponse) => void
+  ): void
+}
+
+export interface RequestHandler {
+  prepareRequest(options: http.RequestOptions): void
+  canHandleAuthentication(response: HttpClientResponse): boolean
+  handleAuthentication(
+    httpClient: HttpClient,
+    requestInfo: RequestInfo,
+    data: string | NodeJS.ReadableStream | null
+  ): Promise<HttpClientResponse>
+}
+
+export interface RequestInfo {
+  options: http.RequestOptions
+  parsedUrl: URL
+  httpModule: typeof http | typeof https
+}
+
+export interface RequestOptions {
+  headers?: http.OutgoingHttpHeaders
+  socketTimeout?: number
+  ignoreSslError?: boolean
+  allowRedirects?: boolean
+  allowRedirectDowngrade?: boolean
+  maxRedirects?: number
+  maxSockets?: number
+  keepAlive?: boolean
+  deserializeDates?: boolean
+  // Allows retries only on Read operations (since writes may not be idempotent)
+  allowRetries?: boolean
+  maxRetries?: number
+}
+
+export interface TypedResponse<T> {
+  statusCode: number
+  result: T | null
+  headers: http.IncomingHttpHeaders
+}
diff --git a/src/proxy.ts b/src/proxy.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3a9c6834ec9da13b1af9b8f8390eff8ec1002f85
--- /dev/null
+++ b/src/proxy.ts
@@ -0,0 +1,108 @@
+export function getProxyUrl(reqUrl: URL): URL | undefined {
+  const usingSsl = reqUrl.protocol === 'https:'
+
+  if (checkBypass(reqUrl)) {
+    return undefined
+  }
+
+  const proxyVar = (() => {
+    if (usingSsl) {
+      return process.env['https_proxy'] || process.env['HTTPS_PROXY']
+    } else {
+      return process.env['http_proxy'] || process.env['HTTP_PROXY']
+    }
+  })()
+
+  if (proxyVar) {
+    try {
+      return new DecodedURL(proxyVar)
+    } catch {
+      if (!proxyVar.startsWith('http://') && !proxyVar.startsWith('https://'))
+        return new DecodedURL(`http://${proxyVar}`)
+    }
+  } else {
+    return undefined
+  }
+}
+
+export function checkBypass(reqUrl: URL): boolean {
+  if (!reqUrl.hostname) {
+    return false
+  }
+
+  const reqHost = reqUrl.hostname
+  if (isLoopbackAddress(reqHost)) {
+    return true
+  }
+
+  const noProxy = process.env['no_proxy'] || process.env['NO_PROXY'] || ''
+  if (!noProxy) {
+    return false
+  }
+
+  // Determine the request port
+  let reqPort: number | undefined
+  if (reqUrl.port) {
+    reqPort = Number(reqUrl.port)
+  } else if (reqUrl.protocol === 'http:') {
+    reqPort = 80
+  } else if (reqUrl.protocol === 'https:') {
+    reqPort = 443
+  }
+
+  // Format the request hostname and hostname with port
+  const upperReqHosts = [reqUrl.hostname.toUpperCase()]
+  if (typeof reqPort === 'number') {
+    upperReqHosts.push(`${upperReqHosts[0]}:${reqPort}`)
+  }
+
+  // Compare request host against noproxy
+  for (const upperNoProxyItem of noProxy
+    .split(',')
+    .map(x => x.trim().toUpperCase())
+    .filter(x => x)) {
+    if (
+      upperNoProxyItem === '*' ||
+      upperReqHosts.some(
+        x =>
+          x === upperNoProxyItem ||
+          x.endsWith(`.${upperNoProxyItem}`) ||
+          (upperNoProxyItem.startsWith('.') &&
+            x.endsWith(`${upperNoProxyItem}`))
+      )
+    ) {
+      return true
+    }
+  }
+
+  return false
+}
+
+function isLoopbackAddress(host: string): boolean {
+  const hostLower = host.toLowerCase()
+  return (
+    hostLower === 'localhost' ||
+    hostLower.startsWith('127.') ||
+    hostLower.startsWith('[::1]') ||
+    hostLower.startsWith('[0:0:0:0:0:0:0:1]')
+  )
+}
+
+class DecodedURL extends URL {
+  private _decodedUsername: string
+  private _decodedPassword: string
+
+  constructor(url: string | URL, base?: string | URL) {
+    super(url, base)
+    this._decodedUsername = decodeURIComponent(super.username)
+    this._decodedPassword = decodeURIComponent(super.password)
+  }
+
+  get username(): string {
+    return this._decodedUsername
+  }
+
+  get password(): string {
+    return this._decodedPassword
+  }
+}