Q3-core-responder NPM

Responder

Q3 responder handles two responsibilities: (1) assigning HTTP status codes to unhandled exceptions and (2) throwing custom errors in the stack. Within client projects, the first is irrelevant as Q3 registers the functionality via global express middleware. However, the second is very common when dealing with custom validation logic.

API

`exception`

The exception export offers a chainable API for building general and field-level errors. When constructing, the first parameter will correspond to an HTTP status code (see table below).

Error	Code
`BadRequest`	`400`
`Authentication`	`401`
`Authorization`	`403`
`ResourceNotFound`	`404`
`Conflict`	`409`
`Gone`	`410`
`Preprocessing`	`412`
`Validation`	`422`
`InternalServer`	`500`

Afterwards, you can chain the following methods. You can invoke msg and field in any order but boomerang, log and throw should end your chain.

Method	Param	Description
`msg`	`String`	The language key for a message to decorate the HTTP response
`field`	`String` or `Object`	The field-level error to report. If a string, it will duplicate the `msg` output. If an object, you can provide custom messages and map to multiple fields.
`throw`		A custom error will throw in your stack
`boomerang`		A custom error will return
`log`		A custom error will log to console

Example

const { exception } = require('q3-core-responder');

function doSomething(args = {}) {
  if (args.bad)
    exception('Conflict')
      .msg('custom18nMessageKey')
      .field('name')
      .throw();

  if (args.reallyBad)
    exception('Validation')
      .msg('custom18nMessageKey')
      .field({
        in: 'application', // can be anything
        name: ['field1', 'field2'],
        msg: 'dataNoGood',
      })
      .throw();
}

etag moment

@everything-registry/sub-chunk-2500 q3-api q3-core-access q3-core-composer q3-schema-permissions q3-schema-rates q3-schema-rebates q3-schema-users q3-schema-utils q3-core-rest q3-plugin-sequence q3-schema-addresses q3-schema-discounts @infinitebrahmanuniverse/nolb-q3

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