Set API origin failing linter test

[InPen]

const setAPIOrigin = (location, config) => {
  // strip the leading `'?'`
  const search = parseNestedQuery(location.search.slice(1))

  if (search.environment === 'development' ||
      location.hostname === 'localhost' &&
      search.environment !== 'production') {
    if (!(config.apiOrigin = config.apiOrigins.development)) {
      const port = +('GA'.split('').reduce((p, c) =>
        p + c.charCodeAt().toString(16), '')
      )
      config.apiOrigin = `http://localhost:${port}`
    }
  } else {
    config.apiOrigin = config.apiOrigins.production
  }
}

[InPen]

/Users/Maria/Desktop/GA/talk/html-css/lib/set-api-origin.js
23:44 error Unexpected mix of '||' and '&&' no-mixed-operators
24:41 error Unexpected mix of '||' and '&&' no-mixed-operators