[ARROW-12303] [JS] Use iterators instead of generators in critical code paths

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0
• Component/s: JavaScript
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28106
• Assignee: Dominik Moritz
• Reporter: Dominik Moritz
• Created: 08/Apr/21 16:43
• Updated: 11/Jan/23 08:25
• Resolved: 12/Apr/21 23:28

Description

I found that generators are generally slower than iterators in most browsers. See https://observablehq.com/@domoritz/yield-vs-iterator-vs-callback. I attached the results for Chrome. We should consider using iterators instead of generators for iterating over row proxies and vectors. 

Issue Links

• links to: GitHub Pull Request #9962