[ARROW-5689] [JS] Remove hard-coded Field.nullable

• Type: Task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: JavaScript
• External issue URL: https://github.com/apache/arrow/issues/22120
• Assignee: Unassigned
• Reporter: Brian Hulette
• Created: 22/Jun/19 00:27
• Updated: 11/Jan/23 07:42

Description

Context: https://github.com/apache/arrow/pull/4502#discussion_r296390833

This isn't a huge issue since we can just elide validity buffers when null count is zero, but sometimes it's desirable to be able to assert a Field is never null.