DeepResolve.js

function decode(input) {
  return input && typeof input === 'object'
    ? Object.entries(input).reduce(async (accum, [key, value]) => {
      const [resolvedAccum, resolvedValue] = await Promise.all([accum, value])
      let decodedValue = resolvedValue
      if (Array.isArray(resolvedValue)) {
        decodedValue = await Promise.all(resolvedValue.map(decode))
      }
      if (resolvedValue && typeof resolvedValue === 'object') {
        decodedValue = await decode(resolvedValue)
      }
      return {
        ...resolvedAccum,
        [key]: decodedValue,
      }
    }, {})
    : input
}