middleware for https://github.com/twg/devour

devour-middleware.js

import _ from 'lodash'

function deepMapKeys(obj, fn) {
  if (_.isArray(obj)) {
    return _.map(obj, (v) => deepMapKeys(v, fn))
  }

  if (_.isPlainObject(obj)) {
    let newObj = {}

    _.forOwn(obj, (v, k) => {
      newObj[fn(k)] = deepMapKeys(v, fn)
    })

    return newObj
  }

  return obj
}

export const errorMiddleware = {
  name: 'pass-errors-through',
  error: function (payload) {
    return payload.data.errors
  }
}

export const camelCaseMiddleware = {
  name: 'camel-case-response',
  res: (payload) => {
    if (payload.res.data) {
      payload.res.data = deepMapKeys(payload.res.data, _.camelCase)
    }

    return payload
  }
}

export const kebabCaseMiddleware = {
  name: 'kebab-case-request',
  req: function (payload) {
    if (payload.req.data) {
      payload.req.data = deepMapKeys(payload.req.data, _.kebabCase)
    }

    return payload
  }
}

// usage

client.replaceMiddleware('errors', errorMiddleware)
client.insertMiddlewareBefore('axios-request', kebabCaseMiddleware)
client.insertMiddlewareBefore('response', camelCaseMiddleware)