code: function set(prefix, value) {
      for (const key of keys(value)) {
        const name = prefix ? `${prefix}[${key}]` : key
        const field = value[key]
  
        if (isArray(field) || isPlainObject(field)) {
          set(name, field)
        } else {
          if (options.strict && (isBoolean(field) && field === false)) {
            continue
          }
  
          fd[method](name, field)
        }
      }
    }
docs: Set object fields to FormData instance
  
  @param {string} [prefix = undefined] – parent field key
  @param {any} value – A value of the current field
  
  @api private