### Install asynckit

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/asynckit/README.md

Install the asynckit module using npm.

```sh
$ npm install --save asynckit
```

--------------------------------

### Install json-schema-traverse

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/json-schema-traverse/README.md

Install the library using npm.

```bash
npm install json-schema-traverse
```

--------------------------------

### Basic Usage of performance-now

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/performance-now/README.md

Demonstrates how to require the module, get start and end timestamps, and log the elapsed time in milliseconds with three decimal places. Note that consecutive calls have a small overhead.

```javascript
var now = require("performance-now")
var start = now()
var end = now()
console.log(start.toFixed(3)) // the number of milliseconds the current node process is running
console.log((start-end).toFixed(3)) // ~ 0.002 on my system
```

--------------------------------

### Install co

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/co/Readme.md

Install the co library using npm.

```bash
$ npm install co
```

--------------------------------

### Install getpass

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/getpass/README.md

Install the getpass module using npm.

```bash
npm install --save getpass
```

--------------------------------

### Starting and Stopping Background Offset Refresh

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/sntp/README.md

Illustrates how to start a background offset refresh interval and use the `now()` method to get the system time with the applied offset. It also shows how to stop the refresh.

```javascript
var before = Sntp.now();                    // System time without offset

Sntp.start(function () {

    var now = Sntp.now();                   // With offset
    Sntp.stop();
});
```

--------------------------------

### No Proxy Configuration Examples

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/request/README.md

Examples of valid values for the NO_PROXY environment variable to opt out of proxying for specific hosts or ports.

```text
google.com
```

```text
google.com:443
```

```text
google.com:443, yahoo.com:80
```

```text
*

```

--------------------------------

### Install Dependencies and Run Tests

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/ajv/README.md

Installs project dependencies, updates git submodules, and runs the test suite.

```bash
npm install
git submodule update --init
npm test
```

--------------------------------

### Install Punycode.js via Component

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/punycode/README.md

Install the library using the Component package manager.

```bash
component install bestiejs/punycode.js
```

--------------------------------

### Install sshpk

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/sshpk/README.md

Install the sshpk package using npm.

```bash
npm install sshpk
```

--------------------------------

### Install safe-buffer

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/safe-buffer/README.md

Install the safe-buffer package using npm.

```bash
npm install safe-buffer
```

--------------------------------

### HTTP Request Example

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/http-signature/http_signing.md

This is a sample HTTP POST request used in the examples.

```http
POST /foo?param=value&pet=dog HTTP/1.1
Host: example.com
Date: Thu, 05 Jan 2014 21:31:40 GMT
Content-Type: application/json
Digest: SHA-256=X48E9qOokqqrvdts8nOJRJN3OWDUoyWxBf7kbu9DBPE=
Content-Length: 18

{"hello": "world"}
```

--------------------------------

### Example Output: String Option

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

Illustrates parsing a string option with its value, showing how the option and its argument are captured.

```bash
$ node foo.js -f bar.txt
# opts: { file: 'bar.txt',
  _order: [ { name: 'file', value: 'bar.txt', from: 'argv' } ],
  _args: [] }
# args: []
```

--------------------------------

### Install mime-db

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/mime-db/README.md

Install the mime-db package using npm.

```bash
npm install mime-db
```

--------------------------------

### Example help output with group headings

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Shows the resulting help output when using group headings to structure options.

```text
        ...
          Armament Options:
            -w, --weapon

          General Options:
            -h, --help
        ...
```

--------------------------------

### Example Output: Version Option with Argument

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

Demonstrates parsing the version option along with an additional argument, showing how arguments not matching options are collected in `_args`.

```bash
$ node foo.js --version arg1
# opts: { version: true,
  _order: [ { name: 'version', value: true, from: 'argv' } ],
  _args: [ 'arg1' ] }
# args: [ 'arg1' ]
```

--------------------------------

### Example Output: Help Message

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

Illustrates the output when the help option is invoked, showing the generated usage and options based on the parser configuration.

```bash
$ node foo.js -h
# opts: { help: true,
  _order: [ { name: 'help', value: true, from: 'argv' } ],
  _args: [] }
# args: []
usage: node foo.js [OPTIONS]
options:
    --version             Print tool version and exit.
    -h, --help            Print this help and exit.
    -v, --verbose         Verbose output. Use multiple times for more verbose.
    -f FILE, --file=FILE  File to process
```

--------------------------------

### Install combined-stream

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/combined-stream/Readme.md

Install the combined-stream module using npm.

```bash
npm install combined-stream
```

--------------------------------

### Install NPM Modules for Development

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/tweetnacl/README.md

Installs the necessary Node.js packages for developing and testing TweetNaCl.js.

```bash
$ npm install
```

--------------------------------

### Initialize Caseless Wrapper

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/caseless/README.md

Instantiate the caseless wrapper with an object. This is the initial setup for using caseless semantics.

```javascript
var headers = {}
  , c = caseless(headers)
  ;

```

--------------------------------

### Install extend Package

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/extend/README.md

Install the extend package using npm.

```sh
npm install extend
```

--------------------------------

### Install extsprintf

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/extsprintf/README.md

Install the extsprintf module using npm. This is a prerequisite for using the module in your Node.js project.

```bash
# npm install extsprintf
```

--------------------------------

### Install Punycode.js via Bower

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/punycode/README.md

Install the library using Bower for front-end package management.

```bash
bower install punycode
```

--------------------------------

### Install delayed-stream

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/delayed-stream/Readme.md

Install the delayed-stream module using npm.

```bash
npm install delayed-stream
```

--------------------------------

### Install AJV using npm

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/ajv/README.md

Install the AJV package using npm. This is the first step to using AJV in your Node.js project.

```bash
npm install ajv
```

--------------------------------

### Bash Completion Example (Before)

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Illustrates the output of dashdash's Bash completion support before a fix for sorting rules.

```bash
$ triton -v -p test2 package get <TAB>          # before
        ##-no -tritonpackage- completions-##
```

--------------------------------

### Run Performance Benchmark

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/fast-deep-equal/README.md

Instructions to run the performance benchmark for fast-deep-equal. This requires installing dependencies and executing the benchmark script.

```bash
npm install
node benchmark
```

--------------------------------

### OAuth 1.0 Signing (Twitter Example)

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/request/README.md

Provides a multi-step example of implementing OAuth 1.0 signing for API requests, specifically using the Twitter API. This covers the server-side flow for obtaining request tokens, user authentication, and access tokens.

```javascript
// OAuth1.0 - 3-legged server side flow (Twitter example)
// step 1
var qs = require('querystring')
  , oauth =
    { callback: 'http://mysite.com/callback/'
    , consumer_key: CONSUMER_KEY
    , consumer_secret: CONSUMER_SECRET
    }
  , url = 'https://api.twitter.com/oauth/request_token'
  ;
request.post({url:url, oauth:oauth}, function (e, r, body) {
  // Ideally, you would take the body in the response
  // and construct a URL that a user clicks on (like a sign in button).
  // The verifier is only available in the response after a user has
  // verified with twitter that they are authorizing your app.

  // step 2
  var req_data = qs.parse(body)
  var uri = 'https://api.twitter.com/oauth/authenticate'
    + '?' + qs.stringify({oauth_token: req_data.oauth_token})
  // redirect the user to the authorize uri

  // step 3
  // after the user is redirected back to your server
  var auth_data = qs.parse(body)
    , oauth =
      { consumer_key: CONSUMER_KEY
      , consumer_secret: CONSUMER_SECRET
      , token: auth_data.oauth_token
      , token_secret: req_data.oauth_token_secret
      , verifier: auth_data.oauth_verifier
      }
    , url = 'https://api.twitter.com/oauth/access_token'
    ;
  request.post({url:url, oauth:oauth}, function (e, r, body) {
    // ready to make signed requests on behalf of the user
    var perm_data = qs.parse(body)
      , oauth =
        { consumer_key: CONSUMER_KEY
        , consumer_secret: CONSUMER_SECRET
        , token: perm_data.oauth_token
        , token_secret: perm_data.oauth_token_secret
        }
      , url = 'https://api.twitter.com/1.1/users/show.json'
      , qs = 
        { screen_name: perm_data.screen_name
        , user_id: perm_data.user_id
        }
      ;
    request.get({url:url, oauth:oauth, qs:qs, json:true}, function (e, r, user) {
      console.log(user)
    })
  })
})
```

--------------------------------

### Install Punycode.js via npm

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/punycode/README.md

Use this command to install the library if you are using a Node.js version older than v0.6.2.

```bash
npm install punycode
```

--------------------------------

### Bash Completion Example (After)

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Illustrates the output of dashdash's Bash completion support after a fix for sorting rules.

```bash
$ triton -v -p test2 package get <TAB>          # after
        ##-no-completion- -results-##
```

--------------------------------

### Bash Completion with Argtypes Example

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Demonstrates Bash completion with custom argtypes for positional arguments, requiring specExtra functions.

```bash
# E.g. this would allow you to have an `ssh` command with `argtypes = ['host',
#   'cmd']` for bash completion. You then have to provide Bash functions to
# handle completing those types via the `specExtra` arg. See
# "[examples/ddcompletion.js](examples/ddcompletion.js)" for an example.
```

--------------------------------

### SynopsisFromOpt Example: String Option

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Generates a synopsis string for a string option with a help argument using synopsisFromOpt.

```javascript
> synopsisFromOpt({name: 'file', type: 'string', helpArg: 'FILE'});
'[ --file=FILE ]'
```

--------------------------------

### Install mime-types

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/mime-types/README.md

Install the mime-types module using npm. This is a standard Node.js module.

```sh
npm install mime-types
```

--------------------------------

### Generate Signature with openssl

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/http-signature/http_signing.md

Example of generating an RSA-SHA256 signature using `openssl` command line.

```bash
$ printf 'date: Thu, 05 Jan 2014 21:31:40 GMT' | \
  openssl dgst -binary -sign /path/to/private.pem -sha256 | \
  openssl enc -base64
jKyvPcxB4JbmYY4mByyBY7cZfNl4OW9Hp...
```

--------------------------------

### Install uuid Module

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/uuid/README.md

Install the uuid module using npm. This is the recommended first step for using the library in a Node.js project.

```shell
npm install uuid
```

--------------------------------

### Install form-data Package

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/form-data/README.md

Install the form-data package using npm. This is a prerequisite for using the library in your Node.js project.

```bash
npm install --save form-data
```

--------------------------------

### Install fast-deep-equal

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/fast-deep-equal/README.md

Install the fast-deep-equal package using npm. This command is used to add the library to your project's dependencies.

```bash
npm install fast-deep-equal
```

--------------------------------

### Verify Signature with openssl

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/http-signature/http_signing.md

Example of verifying an RSA-SHA256 signature using `openssl` command line.

```bash
$ echo 'jKyvPcxB4JbmYY...' | openssl enc -A -d -base64 > signature
$ printf 'date: Thu, 05 Jan 2014 21:31:40 GMT' | \
  openssl dgst -sha256 -verify /path/to/public.pem -signature ./signature
Verified OK
```

--------------------------------

### Usage Example

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/mime-db/README.md

Require the mime-db module and access data for a specific MIME type, such as 'application/javascript'.

```javascript
var db = require('mime-db');

// grab data on .js files
var data = db['application/javascript'];
```

--------------------------------

### Create HTTP Server with Streaming Proxy

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/request/README.md

Example of creating an HTTP server that pipes incoming requests to an external service and streams the response back.

```javascript
http.createServer(function (req, resp) {
  if (req.url === '/doodle.png') {
    if (req.method === 'PUT') {
      req.pipe(request.put('http://mysite.com/doodle.png'))
    } else if (req.method === 'GET' || req.method === 'HEAD') {
      request.get('http://mysite.com/doodle.png').pipe(resp)
    }
  }
})
```

--------------------------------

### Run Headless Browser Tests

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/tweetnacl/README.md

Executes tests in a headless browser environment using tape-run. Requires xvfb to be installed.

```bash
$ npm run test-browser
```

--------------------------------

### Example Output: Verbose Option

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

Shows the parsed options when the verbose flag is used, demonstrating how `arrayOfBool` type handles repeated flags.

```bash
$ node foo.js -v
# opts: { verbose: [ true ],
  _order: [ { name: 'verbose', value: true, from: 'argv' } ],
  _args: [] }
# args: []
```

--------------------------------

### startsWith(str, prefix)

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/jsprim/README.md

Returns true if the given string starts with the given prefix and false otherwise.

```APIDOC
## startsWith(str, prefix)

### Description
Returns true if the given string starts with the given prefix and false otherwise.

### Parameters
* **str** (string) - The string to check.
* **prefix** (string) - The prefix to look for.

### Returns
(boolean) - True if the string starts with the prefix, false otherwise.
```

--------------------------------

### Start Background Offset Refresh

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/sntp/README.md

Starts a background process to refresh the clock offset periodically. The `now()` method can then be used to get the synchronized time.

```APIDOC
## Sntp.start(callback)

### Description
Starts a background interval to refresh the clock offset. Use `Sntp.now()` to get the synchronized time.

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Callback Function
- **callback** (function) - A function to be called when the interval starts.

### Request Example
```javascript
var Sntp = require('sntp');

Sntp.start(function () {
    var now = Sntp.now(); // With offset
    Sntp.stop();
});
```

### Response
None directly from `start`, but subsequent calls to `Sntp.now()` will reflect the synchronized time.
```

--------------------------------

### Basic HTTP Request

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/request/README.md

Demonstrates how to make a simple GET request to a URL and handle the response. Requires the 'request' module to be imported.

```javascript
var request = require('request');
request('http://www.google.com', function (error, response, body) {
  console.log('error:', error); // Print the error if one occurred
  console.log('statusCode:', response && response.statusCode); // Print the response status code if a response was received
  console.log('body:', body); // Print the HTML for the Google homepage.
});
```

--------------------------------

### Set and Get Header Caselessly

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/caseless/README.md

Demonstrates setting a header with specific casing and retrieving it using a different casing. The library preserves the initial casing.

```javascript
c.set('a-Header', 'asdf')
c.get('a-header') === 'asdf'
```

--------------------------------

### Set Request Timeout

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/request/README.md

Set a timeout for a GET request to prevent indefinite hanging. This example demonstrates how to set a timeout and check for timeout errors, distinguishing between connection and read timeouts.

```javascript
request.get('http://10.255.255.1', {timeout: 1500}, function(err) {
    console.log(err.code === 'ETIMEDOUT');
    // Set to `true` if the timeout was a connection timeout, `false` or
    // `undefined` otherwise.
    console.log(err.connect === true);
    process.exit(0);
});
```

--------------------------------

### Install HAR Schema

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/har-schema/README.md

Install the har-schema package using npm. This command installs only production dependencies.

```bash
npm install --only=production --save har-schema
```

--------------------------------

### Install HAR Validator

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/har-validator/README.md

Install the HAR Validator module using npm. This command installs the module for production use and saves it as a dependency.

```bash
npm install --only=production --save har-validator
```

--------------------------------

### Sign and Send CloudFront Request for Distributions

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/aws4/README.md

Sign a CloudFront request to list distributions. This example demonstrates signing requests for the CloudFront service.

```javascript
request(aws4.sign({service: 'cloudfront', path: '/2014-05-31/distribution'}))
```

--------------------------------

### Prepare Browser Tests

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/tweetnacl/README.md

Builds the necessary files to run tests in a web browser. Open test/browser/test.html or test/browser/test-fast.html to run.

```bash
$ npm run build-test-browser
```

--------------------------------

### Example Output: Multiple Verbose and String Options

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

Shows parsing multiple instances of a verbose flag and a string option with its value, demonstrating how repeated options and combined arguments are handled.

```bash
$ node foo.js -vvv --file=blah
# opts: { verbose: [ true, true, true ],
  file: 'blah',
  _order:
   [ { name: 'verbose', value: true, from: 'argv' },
     { name: 'verbose', value: true, from: 'argv' },
     { name: 'verbose', value: true, from: 'argv' },
     { name: 'file', value: 'blah', from: 'argv' } ],
  _args: [] }
# args: []
```

--------------------------------

### Environment Variable Fallback Example

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

Shows how to configure an option to fall back to an environment variable if not provided on the command line. This is useful for setting default configurations that can be overridden.

```javascript
var options = [{names: ['dry-run', 'n'], env: 'FOO_DRY_RUN'}];
var opts = dashdash.parse({options: options});
```

--------------------------------

### Proxy Configuration with Defaults

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/request/README.md

Create a Request instance with default proxy settings, then use it to make proxied requests within an HTTP server.

```javascript
var r = request.defaults({'proxy':'http://localproxy.com'})

http.createServer(function (req, resp) {
  if (req.url === '/doodle.png') {
    r.get('http://google.com/doodle.png').pipe(resp)
  }
})
```

--------------------------------

### Advanced Usage with Parser Creation

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

Shows a more realistic example using `dashdash.createParser` and `parser.help()` for formatted option help. This allows for more control and features like including environment variables in help messages.

```javascript
var dashdash = require('./lib/dashdash');

var options = [
    {
        name: 'version',
        type: 'bool',
        help: 'Print tool version and exit.'
    },
    {
        names: ['help', 'h'],
        type: 'bool',
        help: 'Print this help and exit.'
    },
    {
        names: ['verbose', 'v'],
        type: 'arrayOfBool',
        help: 'Verbose output. Use multiple times for more verbose.'
    },
    {
        names: ['file', 'f'],
        type: 'string',
        help: 'File to process',
        helpArg: 'FILE'
    }
];

var parser = dashdash.createParser({options: options});
try {
    var opts = parser.parse(process.argv);
} catch (e) {
    console.error('foo: error: %s', e.message);
    process.exit(1);
}

console.log("# opts:", opts);
console.log("# args:", opts._args);

// Use `parser.help()` for formatted options help.
if (opts.help) {
    var help = parser.help({includeEnv: true}).trimRight();
    console.log('usage: node foo.js [OPTIONS]\n' 
                + 'options:\n' 
                + help);
    process.exit(0);
}

// ...
```

--------------------------------

### Install aws4 Module

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/aws4/README.md

Install the aws4 module using npm for use in your Node.js project.

```bash
npm install aws4
```

--------------------------------

### Setting a Specific Cookie and Using Custom Jar

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/request/README.md

This example shows how to create a cookie, set it in a custom jar, and then use that jar for requests. The cookie will be sent to the specified URL.

```javascript
var j = request.jar();
var cookie = request.cookie('key1=value1');
var url = 'http://www.google.com';
j.setCookie(cookie, url);
request({url: url, jar: j}, function () {
  request('http://images.google.com')
})
```

--------------------------------

### Option with Environment Variable but no Help

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Demonstrates how an option with an environment variable but no explicit help text is handled. The environment variable is still used for output.

```javascript
{ names: ['foo'], type: 'string', env: 'FOO' }
```

--------------------------------

### Checking if a String Starts with a Prefix

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/jsprim/README.md

Returns true if the given string starts with the given prefix and false otherwise.

```javascript
startsWith(str, prefix)
```

--------------------------------

### Example usage of date and arrayOfDate option types

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Shows how to use the 'date' and 'arrayOfDate' option types with epoch second or ISO 8601 formatted arguments, and displays the parsed output.

```bash
$ node examples/date.js -s 2014-01-01 -e $(date +%s)
start at 2014-01-01T00:00:00.000Z
end at 2014-03-29T04:26:18.000Z
```

--------------------------------

### Set Option via Environment Variable (String)

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

Demonstrates setting a string option 'file' using the 'FOO_FILE' environment variable.

```shell
$ FOO_FILE=data.txt node examples/foo.js
# opts: { file: 'data.txt',
  _order: [ { key: 'file', value: 'data.txt', from: 'env' } ],
  _args: [] }
# args: []

```

--------------------------------

### Sign and Send STS Request to Get Session Token

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/aws4/README.md

Sign an STS request to get a session token. This is a common operation for temporary credentials.

```javascript
request(aws4.sign({service: 'sts', path: '/?Action=GetSessionToken&Version=2011-06-15'}))
```

--------------------------------

### Vulnerable HTTP Server Example

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/safe-buffer/README.md

This Node.js HTTP server example is vulnerable to remote memory disclosure. It parses a JSON payload and converts the 'str' property to hex using the unsafe Buffer constructor.

```javascript
// Take a JSON payload {str: "some string"} and convert it to hex
var server = http.createServer(function (req, res) {
  var data = ''
  req.setEncoding('utf8')
  req.on('data', function (chunk) {
    data += chunk
  })
  req.on('end', function () {
    var body = JSON.parse(data)
    res.end(new Buffer(body.str).toString('hex'))
  })
})

server.listen(8080)
```

--------------------------------

### Example: 'yesno' Custom Option Type

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

This example shows how to create a custom 'yesno' option type that parses 'yes', 'y', 'no', or 'n' into boolean values. It includes a custom parsing function and demonstrates how to use this new type in the options configuration.

```javascript
var dashdash = require('dashdash');

function parseYesNo(option, optstr, arg) {
    var argLower = arg.toLowerCase()
    if (~['yes', 'y'].indexOf(argLower)) {
        return true;
    } else if (~['no', 'n'].indexOf(argLower)) {
        return false;
    } else {
        throw new Error(format(
            'arg for "%s" is not "yes" or "no": "%s"',
            optstr, arg));
    }
}

dashdash.addOptionType({
    name: 'yesno'
    takesArg: true,
    helpArg: '<yes|no>',
    parseArg: parseYesNo
});

var options = {
    {names: ['answer', 'a'], type: 'yesno'}
};
var opts = dashdash.parse({options: options});
```

--------------------------------

### Short Option Group Parsing Example

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Illustrates a scenario where a short option group is parsed, including an option that takes an argument. This example shows the correct parsing of `tail -fn5`, where `-f` is a boolean option and `-n` takes a numeric argument.

```bash
tail -fn5
```

--------------------------------

### Get Punycode.js Version

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/punycode/README.md

Access the current version number of the Punycode.js library.

```javascript
punycode.version;
```

--------------------------------

### Verify Signature with sshpk-verify

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/http-signature/http_signing.md

Example of verifying an RSA-SHA256 signature using the `sshpk-verify` tool.

```bash
$ printf 'date: Thu, 05 Jan 2014 21:31:40 GMT' | \
  sshpk-verify -i ./public.pem -s 'jKyvPcxB4JbmYY...'
OK
```

--------------------------------

### Generate Signature with sshpk-sign

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/http-signature/http_signing.md

Example of generating an RSA-SHA256 signature using the `sshpk-sign` tool.

```bash
$ printf 'date: Thu, 05 Jan 2014 21:31:40 GMT' | \
  sshpk-sign -i /path/to/private.pem
jKyvPcxB4JbmYY4mByyBY7cZfNl4OW9Hp...
```

--------------------------------

### Stream Response to File

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/request/README.md

Pipe the response of a GET request directly to a file stream.

```javascript
request('http://google.com/doodle.png').pipe(fs.createWriteStream('doodle.png'))
```

--------------------------------

### Environment Variable Integration Example

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Illustrates the integration of environment variables with command-line options. If an option is not provided in argv, it falls back to using the associated environment variable.

```javascript
See the "Environment variable integration" section in the README.
```

--------------------------------

### SynopsisFromOpt Example: Boolean Option

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/CHANGES.md

Generates a synopsis string for a boolean option using synopsisFromOpt.

```javascript
> synopsisFromOpt({names: ['help', 'h'], type: 'bool'});
'[ --help | -h ]'
```

--------------------------------

### Basic Usage of qs.parse and qs.stringify

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/qs/README.md

Demonstrates the fundamental usage of qs.parse to convert a querystring into an object and qs.stringify to convert an object back into a querystring.

```javascript
var qs = require('qs');
var assert = require('assert');

var obj = qs.parse('a=c');
assert.deepEqual(obj, { a: 'c' });

var str = qs.stringify(obj);
assert.equal(str, 'a=c');
```

--------------------------------

### combinedStream.resume

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/combined-stream/Readme.md

Resumes the combined stream, causing it to start draining the managed streams and emitting a 'resume' event.

```APIDOC
## combinedStream.resume()

### Description
Causes `combinedStream` to start drain the streams it manages. The function is idempotent, and also emits a `'resume'` event each time which usually goes to the stream that is currently being drained.

### Method
`combinedStream.resume()`
```

--------------------------------

### Get default extension for a content-type

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/mime-types/README.md

Use `mime.extension()` to retrieve the default file extension for a given content-type.

```javascript
mime.extension('application/octet-stream') // 'bin'
```

--------------------------------

### Basic Usage of dashdash.parse

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/dashdash/README.md

Demonstrates the basic usage of `dashdash.parse` to parse command-line arguments. This shortcut form infers `process.argv`.

```javascript
var dashdash = require('dashdash');

// Specify the options. Minimally `name` (or `names`) and `type`
// must be given for each.
var options = [
    {
        // `names` or a single `name`. First element is the `opts.KEY`.
        names: ['help', 'h'],
        // See "Option specs" below for types.
        type: 'bool',
        help: 'Print this help and exit.'
    }
];

// Shortcut form. As called it infers `process.argv`. See below for
// the longer form to use methods like `.help()` on the Parser object.
var opts = dashdash.parse({options: options});

console.log("opts:", opts);
console.log("args:", opts._args);
```

--------------------------------

### Sign and Send Autoscaling Request to Describe Instances

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/aws4/README.md

Sign an Autoscaling request to describe auto scaling instances. This example shows how to sign requests for the Auto Scaling service.

```javascript
request(aws4.sign({service: 'autoscaling', path: '/?Action=DescribeAutoScalingInstances&Version=2011-01-01'}))
```

--------------------------------

### Example Schema using $merge Keyword

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/ajv/README.md

Demonstrates how to use the $merge keyword to extend a JSON schema. The 'source' defines the base schema, and 'with' provides properties to merge.

```json
{
  "$merge": {
    "source": {
      "type": "object",
      "properties": { "p": { "type": "string" } },
      "additionalProperties": false
    },
    "with": {
      "properties": { "q": { "type": "number" } }
    }
  }
}
```

--------------------------------

### Hawk Authorization Header Example

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/hawk/README.md

Demonstrates the final HTTP Authorization header with Hawk authentication details, including id, timestamp, nonce, extension data, and MAC.

```http
GET /resource/1?b=1&a=2 HTTP/1.1
Host: example.com:8000
Authorization: Hawk id="dh37fgj492je", ts="1353832234", nonce="j4h3g2", ext="some-app-ext-data", mac="6R4rV5iE+NPoym+WwjeHzjAGXUtLNIxmo1vpMofpLAE="
```

--------------------------------

### Ignoring Query String Prefix

Source: https://github.com/hyperverge/kyc-india-rest-api/blob/master/samples/node.js/node_modules/qs/README.md

Explains how to use the 'ignoreQueryPrefix' option to parse querystrings that start with a question mark.

```javascript
var prefixed = qs.parse('?a=b&c=d', { ignoreQueryPrefix: true });
assert.deepEqual(prefixed, { a: 'b', c: 'd' });
```