GoogleOauth2.0 First implementation

First try for GoogleOauth2.0

express-server/node_modules/retry-axios/README.md

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+# retry-axios
+
+[![NPM Version][npm-image]][npm-url]
+[![CircleCI][circle-image]][circle-url]
+[![Dependency Status][david-image]][david-url]
+[![devDependency Status][david-dev-image]][david-dev-url]
+[![Known Vulnerabilities][snyk-image]][snyk-url]
+[![codecov][codecov-image]][codecov-url]
+[![Greenkeeper badge][greenkeeper-image]][greenkeeper-url]
+[![style badge][gts-image]][gts-url]
+
+Use Axios interceptors to automatically retry failed requests.  Super flexible. Built in exponential backoff.
+
+## Installation
+
+``` sh
+npm install retry-axios
+```
+
+## Usage
+
+To use this library, import it alongside of `axios`:
+
+```js
+// Just import rax and your favorite version of axios
+const rax = require('retry-axios');
+const {axios} = require('axios');
+```
+
+You can attach to the global `axios` object, and retry 3 times by default:
+
+```js
+const interceptorId = rax.attach();
+const res = await axios('https://test.local');
+```
+
+Or you can create your own axios instance to make scoped requests:
+
+```js
+const myAxiosInstance = axios.create();
+myAxiosInstance.defaults = {
+  raxConfig: {
+    instance: myAxiosInstance
+  }
+}
+const interceptorId = rax.attach(myAxiosInstance);
+const res = await myAxiosInstance.get('https://test.local');
+```
+
+You have a lot of options...
+
+```js
+const interceptorId = rax.attach();
+const res = await axios({
+  url: 'https://test.local',
+  raxConfig: {
+    // Retry 3 times on requests that return a response (500, etc) before giving up.  Defaults to 3.
+    retry: 3,
+
+    // Retry twice on errors that don't return a response (ENOTFOUND, ETIMEDOUT, etc).
+    noResponseRetries: 2,
+
+    // Milliseconds to delay at first.  Defaults to 100.
+    retryDelay: 100,
+
+    // HTTP methods to automatically retry.  Defaults to:
+    // ['GET', 'HEAD', 'OPTIONS', 'DELETE', 'PUT']
+    httpMethodsToRetry: ['GET', 'HEAD', 'OPTIONS', 'DELETE', 'PUT'],
+
+    // The response status codes to retry.  Supports a double
+    // array with a list of ranges.  Defaults to:
+    // [[100, 199], [429, 429], [500, 599]]
+    httpStatusCodesToRetry: [[100, 199], [429, 429], [500, 599]],
+
+    // If you are using a non static instance of Axios you need
+    // to pass that instance here (const ax = axios.create())
+    instance: ax,
+
+    // You can detect when a retry is happening, and figure out how many
+    // retry attempts have been made
+    onRetryAttempt: (err) => {
+      const cfg = rax.getConfig(err);
+      console.log(`Retry attempt #${cfg.currentRetryAttempt}`);
+    }
+  }
+});
+```
+
+Or if you want, you can just decide if it should retry or not:
+
+```js
+const res = await axios({
+  url: 'https://test.local',
+  raxConfig: {
+    // Override the decision making process on if you should retry
+    shouldRetry: (err) => {
+      const cfg = rax.getConfig(err);
+      return true;
+    }
+  }
+});
+```
+
+## How it works
+
+This library attaches an `interceptor` to an axios instance you pass to the API.  This way you get to choose which version of `axios` you want to run, and you can compose many interceptors on the same request pipeline.
+
+## License
+[Apache-2.0](LICENSE)
+
+[circle-image]: https://circleci.com/gh/JustinBeckwith/retry-axios.svg?style=svg
+[circle-url]: https://circleci.com/gh/JustinBeckwith/retry-axios
+[codecov-image]: https://codecov.io/gh/JustinBeckwith/retry-axios/branch/master/graph/badge.svg
+[codecov-url]: https://codecov.io/gh/JustinBeckwith/retry-axios
+[david-image]: https://david-dm.org/JustinBeckwith/retry-axios.svg
+[david-url]: https://david-dm.org/JustinBeckwith/retry-axios
+[david-dev-image]: https://david-dm.org/JustinBeckwith/retry-axios/dev-status.svg
+[david-dev-url]: https://david-dm.org/JustinBeckwith/retry-axios?type=dev
+[greenkeeper-image]: https://badges.greenkeeper.io/JustinBeckwith/retry-axios.svg
+[greenkeeper-url]: https://greenkeeper.io/
+[gts-image]: https://img.shields.io/badge/code%20style-Google%20%E2%98%82%EF%B8%8F-blue.svg
+[gts-url]: https://www.npmjs.com/package/gts
+[npm-image]: https://img.shields.io/npm/v/retry-axios.svg
+[npm-url]: https://npmjs.org/package/retry-axios
+[snyk-image]: https://snyk.io/test/github/JustinBeckwith/retry-axios/badge.svg
+[snyk-url]: https://snyk.io/test/github/JustinBeckwith/retry-axios