diff --git a/types/react-native-fetch-blob/index.d.ts b/types/react-native-fetch-blob/index.d.ts
new file mode 100644
index 0000000000..3e281c523d
--- /dev/null
+++ b/types/react-native-fetch-blob/index.d.ts
@@ -0,0 +1,621 @@
+// Type definitions for react-native-fetch-blob 0.10
+// Project: https://github.com/wkh237/react-native-fetch-blob#readme
+// Definitions by: MNB <https://github.com/MNBuyskih>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export const RNFetchBlob: RNFetchBlobStatic;
+export type RNFetchBlob = RNFetchBlobStatic;
+export default RNFetchBlob;
+
+interface RNFetchBlobStatic {
+    fetch(method: Methods, url: string, headers?: { [key: string]: string }, body?: any
+        | null): StatefulPromise<FetchBlobResponse>;
+    base64: { encode(input: string): string; decode(input: string): string };
+    android: AndroidApi;
+    ios: IOSApi;
+    config(options: RNFetchBlobConfig): RNFetchBlobStatic;
+    session(name: string): RNFetchBlobSession;
+    fs: FS;
+    wrap(path: string): string;
+    net: Net;
+    polyfill: Polyfill;
+    // this require external module https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/oboe
+    JSONStream: any;
+}
+
+interface Polyfill {
+    Blob: PolyfillBlob;
+    File: PolyfillFile;
+    XMLHttpRequest: PolyfillXMLHttpRequest;
+    ProgressEvent: PolyfillProgressEvent;
+    Event: PolyfillEvent;
+    FileReader: PolyfillFileReader;
+    Fetch: PolyfillFetch;
+}
+
+declare class PolyfillFetch extends RNFetchBlobFetchPolyfill {
+    constructor(config: RNFetchBlobConfig);
+}
+
+declare class RNFetchBlobFetchPolyfill {
+    constructor(config: RNFetchBlobConfig);
+
+    build(): (url: string, options: RNFetchBlobConfig) => StatefulPromise<RNFetchBlobFetchRepsonse>;
+}
+
+interface RNFetchBlobFetchRepsonse {
+    arrayBuffer(): Promise<any[]>;
+    blob(): Promise<PolyfillBlob>;
+    json(): Promise<any>;
+    rawResp(): Promise<FetchBlobResponse>;
+    text(): Promise<string>;
+    bodyUsed: boolean;
+    headers: any;
+    ok: boolean;
+    resp: FetchBlobResponse;
+    rnfbResp: FetchBlobResponse;
+    rnfbRespInfo: RNFetchBlobResponseInfo;
+    status: number;
+    type: string;
+}
+
+/**
+ * RNFetchBlob response object class.
+ */
+interface FetchBlobResponse {
+    taskId: string;
+    /**
+     * get path of response temp file
+     * @return {string} File path of temp file.
+     */
+    path(): string;
+    type: "base64" | "path" | "utf8";
+    data: any;
+    /**
+     * Convert result to javascript RNFetchBlob object.
+     * @return {Promise<Blob>} Return a promise resolves Blob object.
+     */
+    blob(contentType: string, sliceSize: number): Promise<PolyfillBlob>;
+    /**
+     * Convert result to text.
+     * @return {string} Decoded base64 string.
+     */
+    text(): string | Promise<any>;
+    /**
+     * Convert result to JSON object.
+     * @return {object} Parsed javascript object.
+     */
+    json(): any;
+    /**
+     * Return BASE64 string directly.
+     * @return {string} BASE64 string of response body.
+     */
+    base64(): any;
+    /**
+     * Remove cahced file
+     * @return {Promise}
+     */
+    flush(): void;
+    respInfo: RNFetchBlobResponseInfo;
+    session(name: string): RNFetchBlobSession | null;
+    /**
+     * Read file content with given encoding, if the response does not contains
+     * a file path, show warning message
+     * @param  {String} encode Encode type, should be one of `base64`, `ascrii`, `utf8`.
+     */
+    readFile(encode: Encoding): Promise<any> | null;
+    /**
+     * Start read stream from cached file
+     * @param  {String} encode Encode type, should be one of `base64`, `ascrii`, `utf8`.
+     */
+    readStream(encode: Encoding): RNFetchBlobStream | null;
+}
+
+interface PolyfillFileReader extends EventTarget {
+    isRNFBPolyFill: boolean;
+    onloadstart(e: Event): void;
+    onprogress(e: Event): void;
+    onload(e: Event): void;
+    onabort(e: Event): void;
+    onerror(e: Event): void;
+    onloadend(e: Event): void;
+
+    abort(): void;
+    readAsArrayBuffer(b: PolyfillBlob): void;
+    readAsBinaryString(b: PolyfillBlob): void;
+    readAsText(b: PolyfillBlob, label?: string): void;
+    readAsDataURL(b: PolyfillBlob): void;
+
+    readyState: number;
+    result: number;
+}
+
+declare namespace PolyfillFileReader {
+    const EMPTY: number;
+    const LOADING: number;
+    const DONE: number;
+}
+
+declare class PolyfillEvent {
+}
+
+interface PolyfillProgressEvent extends EventTarget {
+    lengthComputable: boolean;
+    loaded: number;
+    total: number;
+}
+
+declare class PolyfillBlob extends EventTarget {
+    /**
+     * RNFetchBlob Blob polyfill, create a Blob directly from file path, BASE64
+     * encoded data, and string. The conversion is done implicitly according to
+     * given `mime`. However, the blob creation is asynchronously, to register
+     * event `onCreated` is need to ensure the Blob is creadted.
+     *
+     * @param data Content of Blob object
+     * @param cType Content type settings of Blob object, `text/plain` by default
+     * @param {boolean} defer When this argument set to `true`, blob constructor will not invoke blob created event automatically.
+     */
+    constructor(data: any, cType: any, defer: boolean);
+
+    /**
+     * Since Blob content will asynchronously write to a file during creation,
+     * use this method to register an event handler for Blob initialized event.
+     * @param  {(b:Blob) => void} fn An event handler invoked when Blob created
+     * @return {Blob} The Blob object instance itself
+     */
+    onCreated(fn: () => void): PolyfillBlob;
+
+    markAsDerived(): void;
+
+    /**
+     * Get file reference of the Blob object.
+     * @return {string} Blob file reference which can be consumed by RNFetchBlob fs
+     */
+    getRNFetchBlobRef(): string;
+
+    /**
+     * Create a Blob object which is sliced from current object
+     * @param  {number} start    Start byte number
+     * @param  {number} end      End byte number
+     * @param  {string} contentType Optional, content type of new Blob object
+     * @return {Blob}
+     */
+    slice(start?: number, end?: number, contentType?: string): PolyfillBlob;
+
+    /**
+     * Read data of the Blob object, this is not standard method.
+     * @param  {string} encoding Read data with encoding
+     * @return {Promise}
+     */
+    readBlob(encoding: string): Promise<any>;
+
+    /**
+     * Release the resource of the Blob object.
+     * @nonstandard
+     * @return {Promise}
+     */
+    close(): Promise<void>;
+}
+
+declare namespace PolyfillBlob {
+    function clearCache(): void;
+
+    function build(data: any, cType: any): Promise<PolyfillBlob>;
+
+    function setLog(level: number): void;
+}
+
+declare class PolyfillFile extends PolyfillBlob {
+}
+
+interface PolyfillXMLHttpRequest extends PolyfillXMLHttpRequestEventTarget {
+    upload: PolyfillXMLHttpRequestEventTarget;
+    readonly UNSENT: number;
+    readonly OPENED: number;
+    readonly HEADERS_RECEIVED: number;
+    readonly LOADING: number;
+    readonly DONE: number;
+
+    /**
+     * XMLHttpRequest.open, always async, user and password not supported. When
+     * this method invoked, headers should becomes empty again.
+     * @param  {string} method Request method
+     * @param  {string} url Request URL
+     * @param  {boolean} async Always async
+     * @param  user NOT SUPPORTED
+     * @param  password NOT SUPPORTED
+     */
+    open(method: string, url: string, async: true, user: any, password: any): void;
+
+    /**
+     * Invoke this function to send HTTP request, and set body.
+     * @param body Body in RNfetchblob flavor
+     */
+    send(body: any): void;
+
+    overrideMimeType(mime: string): void;
+
+    setRequestHeader(name: string, value: string): void;
+
+    abort(): void;
+
+    getResponseHeader(field: string): string | null;
+
+    getAllResponseHeaders(): string | null;
+
+    onreadystatechange(e: Event): void;
+    readyState: number;
+    status: number;
+    statusText: string;
+    response: any;
+    responseText: any;
+    responseURL: string;
+    responseHeaders: any;
+    timeout: number;
+    responseType: string;
+}
+
+declare namespace PolyfillXMLHttpRequest {
+    const binaryContentTypes: string[];
+    const UNSENT: number;
+    const OPENED: number;
+    const HEADERS_RECEIVED: number;
+    const LOADING: number;
+    const DONE: number;
+
+    function setLog(level: number): void;
+
+    function addBinaryContentType(substr: string): void;
+
+    function removeBinaryContentType(): void;
+}
+
+interface PolyfillXMLHttpRequestEventTarget extends EventTarget {
+    onabort(e: Event): void;
+    onerror(e: Event): void;
+    onload(e: Event): void;
+    onloadstart(e: Event): void;
+    onprogress(e: Event): void;
+    ontimeout(e: Event): void;
+    onloadend(e: Event): void;
+}
+
+interface Net {
+    /**
+     * Get cookie according to the given url.
+     * @param  {string} domain Domain of the cookies to be removed, remove all
+     * @return {Promise<Array<String>>}     Cookies of a specific domain.
+     */
+    getCookies(domain: string): Promise<string[]>;
+
+    /**
+     * Remove cookies for a specific domain
+     * @param  {?string} domain Domain of the cookies to be removed, remove all
+     * cookies when this is null.
+     * @return {Promise<null>}
+     */
+    removeCookies(domain?: string): Promise<null>;
+}
+
+interface FS {
+    RNFetchBlobSession: RNFetchBlobSession;
+
+    /**
+     * Remove file at path.
+     * @param  {string}   path:string Path of target file.
+     * @return {Promise}
+     */
+    unlink(path: string): Promise<void>;
+
+    /**
+     * Create a directory.
+     * @param  {string} path Path of directory to be created
+     * @return {Promise}
+     */
+    mkdir(path: string): Promise<void>;
+
+    /**
+     * Get a file cache session
+     * @param  {string} name Stream ID
+     * @return {RNFetchBlobSession}
+     */
+    session(name: string): RNFetchBlobSession;
+
+    ls(path: string): Promise<string[]>;
+
+    /**
+     * Create file stream from file at `path`.
+     * @param  {string} path   The file path.
+     * @param  {string} encoding Data encoding, should be one of `base64`, `utf8`, `ascii`
+     * @param  {boolean} bufferSize Size of stream buffer.
+     * @return {RNFetchBlobStream} RNFetchBlobStream stream instance.
+     */
+    readStream(path: string, encoding: Encoding, bufferSize?: number, tick?: number): Promise<RNFetchBlobReadStream>;
+
+    mv(path: string, dest: string): Promise<boolean>;
+
+    cp(path: string, dest: string): Promise<boolean>;
+
+    /**
+     * Create write stream to a file.
+     * @param  {string} path Target path of file stream.
+     * @param  {string} encoding Encoding of input data.
+     * @param  {boolean} append  A flag represent if data append to existing ones.
+     * @return {Promise<{}>} A promise resolves a `WriteStream` object.
+     */
+    writeStream(path: string, encoding: Encoding, append?: boolean): Promise<RNFetchBlobWriteStream>;
+
+    /**
+     * Write data to file.
+     * @param  {string} path  Path of the file.
+     * @param  {string | number[]} data Data to write to the file.
+     * @param  {string} encoding Encoding of data (Optional).
+     * @return {Promise}
+     */
+    writeFile(path: string, data: string | number[], encoding?: Encoding): Promise<void>;
+
+    appendFile(path: string, data: string | number[], encoding?: Encoding): Promise<void>;
+
+    /**
+     * Wrapper method of readStream.
+     * @param  {string} path Path of the file.
+     * @param  {'base64' | 'utf8' | 'ascii'} encoding Encoding of read stream.
+     * @return {Promise<Array<number> | string>}
+     */
+    readFile(path: string, encoding: Encoding, bufferSize?: number): Promise<any>;
+    /**
+     * Check if file exists and if it is a folder.
+     * @param  {string} path Path to check
+     * @return {Promise<boolean>}
+     */
+    exists(path: string): Promise<boolean>;
+
+    createFile(path: string, data: string, encoding: Encoding): Promise<void>;
+
+    isDir(path: string): Promise<boolean>;
+
+    /**
+     * Show statistic data of a path.
+     * @param  {string} path Target path
+     * @return {RNFetchBlobFile}
+     */
+    stat(path: string): Promise<RNFetchBlobFile>;
+
+    lstat(path: string): Promise<RNFetchBlobFile[]>;
+
+    /**
+     * Android only method, request media scanner to scan the file.
+     * @param  {Array<Object<string, string>>} pairs Array contains Key value pairs with key `path` and `mime`.
+     * @return {Promise}
+     */
+    scanFile(pairs: Array<{ [key: string]: string }>): Promise<void>;
+
+    dirs: Dirs;
+
+    slice(src: string, dest: string, start: number, end: number): Promise<void>;
+    asset(path: string): string;
+    df(): Promise<{ free: number, total: number }>;
+}
+
+interface Dirs {
+    DocumentDir: string;
+    CacheDir: string;
+    PictureDir: string;
+    MusicDir: string;
+    MovieDir: string;
+    DownloadDir: string;
+    DCIMDir: string;
+    SDCardDir: string;
+    MainBundleDir: string;
+}
+
+interface RNFetchBlobWriteStream {
+    id: string;
+    encoding: string;
+    append: boolean;
+
+    write(data: string): Promise<void>;
+    close(): void;
+}
+
+interface RNFetchBlobReadStream {
+    path: string;
+    encoding: Encoding;
+    bufferSize?: number;
+    closed: boolean;
+    tick: number;
+
+    open(): void;
+
+    onData(fn: (chunk: string | number[]) => void): void;
+
+    onError(fn: (err: any) => void): void;
+
+    onEnd(fn: () => void): void;
+}
+
+type Encoding = "utf8" | "ascii" | "base64";
+
+/* tslint:disable-next-line interface-name*/
+interface IOSApi {
+    /**
+     * Open a file in {@link https://developer.apple.com/reference/uikit/uidocumentinteractioncontroller UIDocumentInteractionController},
+     * this is the default document viewer of iOS, supports several kinds of files. On Android, there's an similar method {@link android.actionViewIntent}.
+     * @param path This is a required field, the path to the document. The path should NOT contains any scheme prefix.
+     */
+    previewDocument(path: string): void;
+
+    /**
+     * Show options menu for interact with the file.
+     * @param path This is a required field, the path to the document. The path should NOT contains any scheme prefix.
+     */
+    openDocument(path: string): void;
+}
+
+interface AndroidApi {
+    /**
+     * When sending an ACTION_VIEW intent with given file path and MIME type, system will try to open an
+     * App to handle the file. For example, open Gallery app to view an image, or install APK.
+     * @param path Path of the file to be opened.
+     * @param mime Basically system will open an app according to this MIME type.
+     */
+    actionViewIntent(path: string, mime: string): Promise<any>;
+}
+
+type Methods = "POST" | "GET" | "DELETE" | "PUT" | "post" | "get" | "delete" | "put";
+
+/**
+ * A declare class inherits Promise, it has extra method like progress, uploadProgress,
+ * and cancel which can help managing an asynchronous task's state.
+ */
+interface StatefulPromise<T> extends Promise<T> {
+    /**
+     * Cancel the request when invoke this method.
+     */
+    cancel(cb?: (reason: any) => void): StatefulPromise<FetchBlobResponse>;
+
+    /**
+     * Add an event listener which triggers when data receiving from server.
+     */
+    progress(callback: (received: number, total: number) => void): StatefulPromise<FetchBlobResponse>;
+
+    /**
+     * Add an event listener with custom configuration
+     */
+    progress(config: { count?: number, interval?: number }, callback: (received: number, total: number) => void): StatefulPromise<FetchBlobResponse>;
+
+    /**
+     * Add an event listener with custom configuration.
+     */
+    uploadProgress(callback: (sent: number, total: number) => void): StatefulPromise<FetchBlobResponse>;
+
+    /**
+     * Add an event listener with custom configuration
+     */
+    uploadProgress(config: { count?: number, interval?: number }, callback: (sent: number, total: number) => void): StatefulPromise<FetchBlobResponse>;
+
+    /**
+     * An IOS only API, when IOS app turns into background network tasks will be terminated after ~180 seconds,
+     * in order to handle these expired tasks, you can register an event handler, which will be called after the
+     * app become active.
+     */
+    expire(callback: () => void): StatefulPromise<void>;
+}
+
+declare class RNFetchBlobSession {
+    constructor(name: string, list: string[]);
+
+    add(path: string): RNFetchBlobSession;
+
+    remove(path: string): RNFetchBlobSession;
+
+    dispose(): Promise<void>;
+
+    list(): string[];
+
+    name: string;
+
+    static getSession(name: string): any;
+
+    static setSession(name: string): void;
+
+    static removeSession(name: string): void;
+}
+
+/**
+ * A set of configurations that will be injected into a fetch method, with the following properties.
+ */
+interface RNFetchBlobConfig {
+    /**
+     * When this property is true, the downloaded data will overwrite the existing file. (true by default)
+     */
+    overwrite?: boolean;
+
+    /**
+     * Set timeout of the request (in milliseconds).
+     */
+    timeout?: number;
+
+    /**
+     * Set this property to true to display a network indicator on status bar, this feature is only supported on IOS.
+     */
+    indicator?: boolean;
+
+    /**
+     * Set this property to true will allow the request create connection with server have self-signed SSL
+     * certification. This is not recommended to use in production.
+     */
+    trusty?: boolean;
+
+    /**
+     * Set this property to true will makes response data of the fetch stored in a temp file, by default the temp
+     * file will stored in App's own root folder with file name template RNFetchBlob_tmp${timestamp}.
+     */
+    fileCache?: boolean;
+
+    /**
+     * Set this property to change temp file extension that created by fetch response data.
+     */
+    appendExt?: string;
+
+    /**
+     * When this property has value, fetch API will try to store response data in the path ignoring fileCache and
+     * appendExt property.
+     */
+    path?: string;
+
+    session?: string;
+
+    addAndroidDownloads?: AddAndroidDownloads;
+}
+
+interface AddAndroidDownloads {
+    /**
+     * download file using Android download manager or not.
+     */
+    useDownloadManager?: boolean;
+    /**
+     * title of the file
+     */
+    title?: string;
+    /**
+     * File description of the file.
+     */
+    description?: string;
+    /**
+     * The destination which the file will be downloaded, it SHOULD be a location on external storage (DCIMDir).
+     */
+    path?: string;
+    /**
+     * MIME type of the file. By default is text/plain
+     */
+    mime?: string;
+    /**
+     * A boolean value, see Officail Document
+     * (https://developer.android.com/reference/android/app/DownloadManager.html#addCompletedDownload(java.lang.String, java.lang.String, boolean, java.lang.String, java.lang.String, long, boolean))
+     */
+    mediaScannable?: boolean;
+    /**
+     * A boolean value decide whether show a notification when download complete.
+     */
+    notification?: boolean;
+}
+
+interface RNFetchBlobResponseInfo {
+    taskId: string;
+    state: number;
+    headers: any;
+    status: number;
+    respType: "text" | "blob" | "" | "json";
+    rnfbEncode: "path" | "base64" | "ascii" | "utf8";
+}
+
+interface RNFetchBlobStream {
+    onData(): void;
+    onError(): void;
+    onEnd(): void;
+}
+
+declare class RNFetchBlobFile {
+}
diff --git a/types/react-native-fetch-blob/react-native-fetch-blob-tests.ts b/types/react-native-fetch-blob/react-native-fetch-blob-tests.ts
new file mode 100644
index 0000000000..d276a0a7ab
--- /dev/null
+++ b/types/react-native-fetch-blob/react-native-fetch-blob-tests.ts
@@ -0,0 +1,378 @@
+import {RNFetchBlob} from "react-native-fetch-blob";
+
+let BASE64_IMAGE_STRING = 'some base64 image';
+let PATH_TO_THE_FILE = '/some/path.png';
+
+// Download example: Fetch files that need authorization token
+RNFetchBlob
+    .fetch('GET', 'http://www.example.com/images/img1.png', {Authorization: 'Bearer access-token...'})
+    .then(res => {
+        let base64Str = res.base64();
+        let text = res.text();
+        let json = res.json();
+    });
+
+// Download to storage directly
+RNFetchBlob
+    .config({
+        // add this option that makes response data to be stored as a file,
+        // this is much more performant.
+        fileCache: true,
+    })
+    .fetch('GET', 'http://www.example.com/file/example.zip', {
+        // some headers ..
+    })
+    .then((res) => {
+        // the temp file path
+        console.log('The file saved to ', res.path());
+    });
+
+// Set Temp File Extension
+RNFetchBlob
+    .config({
+        fileCache: true,
+        // by adding this option, the temp files will have a file extension
+        appendExt: 'png'
+    })
+    .fetch('GET', 'http://www.example.com/file/example.zip', {
+        // some headers ..
+    })
+    .then((res) => {
+        // the temp file path with file extension `png`
+        console.log('The file saved to ', res.path());
+        // Beware that when using a file path as Image source on Android,
+        // you must prepend "file://"" before the file path
+        // imageView = <Image source={{ uri : Platform.OS === 'android' ? 'file://' + res.path()  : '' + res.path() }}/>
+    });
+
+// Use Specific File Path
+let dirs = RNFetchBlob.fs.dirs;
+RNFetchBlob
+    .config({
+        // response data will be saved to this path if it has access right.
+        path: dirs.DocumentDir + '/path-to-file.anything'
+    })
+    .fetch('GET', 'http://www.example.com/file/example.zip', {
+        // some headers ..
+    })
+    .then((res) => {
+        // the path should be dirs.DocumentDir + 'path-to-file.anything'
+        console.log('The file saved to ', res.path());
+    });
+
+// Upload example : Dropbox files-upload API
+RNFetchBlob.fetch('POST', 'https://content.dropboxapi.com/2/files/upload', {
+    Authorization: "Bearer access-token...",
+    'Dropbox-API-Arg': JSON.stringify({
+        path: '/img-from-react-native.png',
+        mode: 'add',
+        autorename: true,
+        mute: false
+    }),
+    'Content-Type': 'application/octet-stream',
+    // here's the body you're going to send, should be a BASE64 encoded string
+    // (you can use "base64"(refer to the library 'mathiasbynens/base64') APIs to make one).
+    // The data will be converted to "byte array"(say, blob) before request sent.
+}, BASE64_IMAGE_STRING)
+    .then((res) => {
+        console.log(res.text());
+    })
+    .catch((err) => {
+        // error handling ..
+    });
+
+// Upload a file from storage
+RNFetchBlob.fetch('POST', 'https://content.dropboxapi.com/2/files/upload', {
+    // dropbox upload headers
+    Authorization: "Bearer access-token...",
+    'Dropbox-API-Arg': JSON.stringify({
+        path: '/img-from-react-native.png',
+        mode: 'add',
+        autorename: true,
+        mute: false
+    }),
+    'Content-Type': 'application/octet-stream',
+    // Change BASE64 encoded data to a file path with prefix `RNFetchBlob-file://`.
+    // Or simply wrap the file path with RNFetchBlob.wrap().
+}, RNFetchBlob.wrap(PATH_TO_THE_FILE))
+    .then((res) => {
+        console.log(res.text());
+    })
+    .catch((err) => {
+        // error handling ..
+    });
+
+// Multipart/form-data example: Post form data with file and data
+RNFetchBlob.fetch('POST', 'http://www.example.com/upload-form', {
+    Authorization: "Bearer access-token",
+    otherHeader: "foo",
+    'Content-Type': 'multipart/form-data',
+}, [
+    // element with property `filename` will be transformed into `file` in form data
+    {name: 'avatar', filename: 'avatar.png', data: BASE64_IMAGE_STRING},
+    // custom content type
+    {name: 'avatar-png', filename: 'avatar-png.png', type: 'image/png', data: BASE64_IMAGE_STRING},
+    // part file from storage
+    {name: 'avatar-foo', filename: 'avatar-foo.png', type: 'image/foo', data: RNFetchBlob.wrap(PATH_TO_THE_FILE)},
+    // elements without property `filename` will be sent as plain text
+    {name: 'name', data: 'user'},
+    {
+        name: 'info', data: JSON.stringify({
+        mail: 'example@example.com',
+        tel: '12345678'
+    })
+    },
+]).then((resp) => {
+    // ...
+}).catch((err) => {
+    // ...
+});
+
+RNFetchBlob.fetch('POST', 'http://www.example.com/upload-form', {
+    Authorization: "Bearer access-token",
+    otherHeader: "foo",
+    // this is required, otherwise it won't be process as a multipart/form-data request
+    'Content-Type': 'multipart/form-data',
+}, [
+    // append field data from file path
+    {
+        name: 'avatar',
+        filename: 'avatar.png',
+        // Change BASE64 encoded data to a file path with prefix `RNFetchBlob-file://`.
+        // Or simply wrap the file path with RNFetchBlob.wrap().
+        data: RNFetchBlob.wrap(PATH_TO_THE_FILE)
+    },
+    {
+        name: 'ringtone',
+        filename: 'ring.mp3',
+        // use custom MIME type
+        type: 'application/mp3',
+        // upload a file from asset is also possible in version >= 0.6.2
+        data: RNFetchBlob.wrap(RNFetchBlob.fs.asset('default-ringtone.mp3'))
+    },
+    // elements without property `filename` will be sent as plain text
+    {name: 'name', data: 'user'},
+    {
+        name: 'info', data: JSON.stringify({
+        mail: 'example@example.com',
+        tel: '12345678'
+    })
+    },
+]).then((resp) => {
+    // ...
+}).catch((err) => {
+    // ...
+});
+
+// Upload/Download progress
+RNFetchBlob.fetch('POST', 'http://www.example.com/upload', {
+    // ... some headers,
+    'Content-Type': 'octet-stream'
+}, BASE64_IMAGE_STRING)
+// listen to upload progress event
+    .uploadProgress((written, total) => {
+        console.log('uploaded', written / total);
+    })
+    // listen to download progress event
+    .progress((received, total) => {
+        console.log('progress', received / total);
+    })
+    .then((resp) => {
+        // ...
+    })
+    .catch((err) => {
+        // ...
+    });
+
+RNFetchBlob.fetch('POST', 'http://www.example.com/upload', {
+    // ... some headers,
+    'Content-Type': 'octet-stream'
+}, BASE64_IMAGE_STRING)
+// listen to upload progress event, emit every 250ms
+    .uploadProgress({interval: 250}, (written, total) => {
+        console.log('uploaded', written / total);
+    })
+    // listen to download progress event, every 10%
+    .progress({count: 10}, (received, total) => {
+        console.log('progress', received / total);
+    })
+    .then((resp) => {
+        // ...
+    })
+    .catch((err) => {
+        // ...
+    });
+
+// Cancel Request
+let task = RNFetchBlob.fetch('GET', 'http://example.com/file/1');
+task.then(() => {
+})
+// handle request cancelled rejection
+    .catch((err) => {
+        console.log(err);
+    });
+// cancel the request, the callback function is optional
+task.cancel((err: any) => {
+});
+
+// Media Scanner
+RNFetchBlob
+    .config({
+        // DCIMDir is in external storage
+        path: dirs.DCIMDir + '/music.mp3'
+    })
+    .fetch('GET', 'http://example.com/music.mp3')
+    .then((res) => RNFetchBlob.fs.scanFile([{path: res.path(), mime: 'audio/mpeg'}]))
+    .then(() => {
+        // scan file success
+    })
+    .catch((err) => {
+        // scan file error
+    });
+
+// Download Manager
+RNFetchBlob
+    .config({
+        addAndroidDownloads: {
+            useDownloadManager: true, // <-- this is the only thing required
+            // Optional, override notification setting (default to true)
+            notification: false,
+            // Optional, but recommended since android DownloadManager will fail when
+            // the url does not contains a file extension, by default the mime type will be text/plain
+            mime: 'text/plain',
+            description: 'File downloaded by download manager.'
+        }
+    })
+    .fetch('GET', 'http://example.com/file/somefile')
+    .then((resp) => {
+        // the path of downloaded file
+        resp.path();
+    });
+
+RNFetchBlob.config({
+    fileCache: true,
+    // android only options, these options be a no-op on IOS
+    addAndroidDownloads: {
+        // Show notification when response data transmitted
+        notification: true,
+        // Title of download notification
+        title: 'Great ! Download Success ! :O ',
+        // File description (not notification description)
+        description: 'An image file.',
+        mime: 'image/png',
+        // Make the file scannable  by media scanner
+        mediaScannable: true,
+    }
+})
+    .fetch('GET', 'http://example.com/image1.png');
+
+const android = RNFetchBlob.android;
+
+// Open Downloaded File with Intent
+RNFetchBlob.config({
+    addAndroidDownloads: {
+        useDownloadManager: true,
+        title: 'awesome.apk',
+        description: 'An APK that will be installed',
+        mime: 'application/vnd.android.package-archive',
+        mediaScannable: true,
+        notification: true,
+    }
+})
+    .fetch('GET', `http://www.example.com/awesome.apk`)
+    .then((res) => {
+        android.actionViewIntent(res.path(), 'application/vnd.android.package-archive');
+        // Or show an image in image viewer
+        android.actionViewIntent(res.path(), 'image/png');
+    });
+
+// File Stream
+let data = '';
+RNFetchBlob.fs.readStream(
+    // file path
+    PATH_TO_THE_FILE,
+    // encoding, should be one of `base64`, `utf8`, `ascii`
+    'base64',
+    // (optional) buffer size, default to 4096 (4095 for BASE64 encoded data)
+    // when reading file in BASE64 encoding, buffer size must be multiples of 3.
+    4095)
+    .then((ifstream) => {
+        ifstream.open();
+        ifstream.onData((chunk) => {
+            // when encoding is `ascii`, chunk will be an array contains numbers
+            // otherwise it will be a string
+            data += chunk;
+        });
+        ifstream.onError((err) => {
+            console.log('oops', err);
+        });
+        ifstream.onEnd(() => {
+            // <Image source={{ uri : 'data:image/png,base64' + data }}
+        });
+    });
+
+RNFetchBlob.fs.writeStream(
+    PATH_TO_THE_FILE,
+    // encoding, should be one of `base64`, `utf8`, `ascii`
+    'utf8',
+    // should data append to existing content ?
+    true)
+    .then((ofstream) => {
+        ofstream.write('foo');
+        ofstream.write('bar');
+        ofstream.close();
+    });
+
+// Cache File Management
+// remove file using RNFetchblobResponse.flush() object method
+RNFetchBlob
+    .config({fileCache: true})
+    .fetch('GET', 'http://example.com/download/file')
+    .then((res) => {
+        // remove cached file from storage
+        res.flush();
+    });
+
+// remove file by specifying a path
+RNFetchBlob.fs
+    .unlink('some-file-path')
+    .then(() => {
+        // ...
+    });
+
+RNFetchBlob.config({
+    fileCache: true
+})
+    .fetch('GET', 'http://example.com/download/file')
+    .then((res) => {
+        // set session of a response
+        res.session('foo');
+    });
+
+RNFetchBlob.config({
+    // you can also set session beforehand
+    session: 'foo',
+    fileCache: true
+})
+    .fetch('GET', 'http://example.com/download/file')
+    .then((res) => {
+        // ...
+    });
+
+// or put an existing file path to the session
+RNFetchBlob.session('foo').add('some-file-path');
+// remove a file path from the session
+RNFetchBlob.session('foo').remove('some-file-path');
+// list paths of a session
+RNFetchBlob.session('foo').list();
+// remove all files in a session
+RNFetchBlob.session('foo').dispose().then(() => {
+});
+
+// Transfer Encoding
+RNFetchBlob.fetch('POST', 'http://example.com/upload', {'Transfer-Encoding': 'Chunked'}, 'bodyData');
+
+// Self-Signed SSL Server
+RNFetchBlob.config({
+    trusty: true
+});
diff --git a/types/react-native-fetch-blob/tsconfig.json b/types/react-native-fetch-blob/tsconfig.json
new file mode 100644
index 0000000000..18538dfe6c
--- /dev/null
+++ b/types/react-native-fetch-blob/tsconfig.json
@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "lib": [
+      "es6", "dom"
+    ],
+    "noImplicitAny": true,
+    "noImplicitThis": true,
+    "strictNullChecks": true,
+    "baseUrl": "../",
+    "typeRoots": [
+      "../"
+  ],
+  "types": [],
+  "noEmit": true,
+  "forceConsistentCasingInFileNames": true
+},
+  "files": [
+    "index.d.ts",
+    "react-native-fetch-blob-tests.ts"
+  ]
+}
diff --git a/types/react-native-fetch-blob/tslint.json b/types/react-native-fetch-blob/tslint.json
new file mode 100644
index 0000000000..377cc837d4
--- /dev/null
+++ b/types/react-native-fetch-blob/tslint.json
@@ -0,0 +1 @@
+{ "extends": "../tslint.json" }