Fetch with retries

robust-fetch.js

const robustFetch = async (url, tries = 3) => {
    let response

    do {
      try {
        response = await fetch(url)
        
        // TODO: check for response.ok

        return response
      } catch (error) {
        console.error(error)
        tries--
      }
      
      // TODO: back off
      await new Promise((resolve) => window.setTimeout(resolve, 1000))
    } while (tries)

    throw new Error(`Failed to fetch ${url}`)
  }