feat: Improve 'setupLogging' to instantiate a log array if none is provided

[Brad-Turner]

Summary

• Modifies the log parameter to be optional.
• Returns the log value (whether passed-in or instantiated)

Usage in contentful-export:

  const log = []
  const options = parseOptions(params)

  const listrOptions = createListrOptions(options)

  // Setup custom error listener to store errors for later
  setupLogging(log)

New behaviour:

  // Setup custom error listener to store errors for later
  const log = setupLogging()
  const options = parseOptions(params)

  const listrOptions = createListrOptions(options)

Usage in contentful-import:

  const log = []
  const options = parseOptions(params)
  const listrOptions = createListrOptions(options)
  const requestQueue = new PQueue({
    interval: ONE_SECOND,
    intervalCap: options.rateLimit,
    carryoverConcurrencyCount: true
  })

  // Setup custom log listener to store log messages for later
  setupLogging(log)

New behaviour:

  // Setup custom log listener to store log messages for later
  const log = setupLogging()
  const options = parseOptions(params)
  const listrOptions = createListrOptions(options)
  const requestQueue = new PQueue({
    interval: ONE_SECOND,
    intervalCap: options.rateLimit,
    carryoverConcurrencyCount: true
  })

[mayakarabula]

looks good :)

[contentful-automation]

🎉 This PR is included in version 10.1.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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