Check if an HTTP status code is an error code
npm install is-error-code> Check if an HTTP status code is an error code
```
$ npm install --save is-error-code
`js
var isErrorCode = require('is-error-code')
isErrorCode(200)
//=> false
isErrorCode(400)
//=> true
`
#### isErrorCode(code) -> boolean
##### code
Required
Type: number`
An HTTP status code.
MIT © Ben Drucker