serverless-offline/src/utils/getRawQueryParams.js

Emulate AWS λ and API Gateway locally when developing your Serverless project

import parseQueryStringParameters from "./parseQueryStringParameters.js"

export default function getRawQueryParams(url) {
  const queryParams = parseQueryStringParameters(url) || {}
  return Object.keys(queryParams)
    .reduce(function reducer(accumulator, currentKey) {
      accumulator.push(`${currentKey}=${queryParams[currentKey]}`)
      return accumulator
    }, [])
    .join("&")
}