Function item

http/unstable_structured_fields.ts:338–343

(
  value: BareItem,
  parameters?: Iterable<[string, BareItem]>,
)

 * ```
 */
export function item(
  value: BareItem,
  parameters?: Iterable<[string, BareItem]>,
): Item {
  return { value, parameters: new Map(parameters) };
}

/**
 * Creates an Inner List from Items and optional Parameters.