Function joinArray

client/src/server/renderFullPage.ts:15–17

(fn: (a: string) => string, array: string[] | null)

  : '')

const joinArray = (fn: (a: string) => string, array: string[] | null) => (array
  ? array.map(fn).join('\n')
  : '')

const googleAnalytics = (gaId: string | null) => {
  if (!gaId) return ''