[ARROW-12536] [JS] Construct tables from JavaScript types

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Implemented
• Fix Version/s: 7.0.0
• Component/s: JavaScript
• External issue URL: https://github.com/apache/arrow/issues/28300
• Assignee: Dominik Moritz
• Reporter: Dominik Moritz
• Created: 26/Apr/21 01:47
• Updated: 11/Jan/23 08:27
• Resolved: 16/Jan/22 17:28

Description

Right now, Arrow has no automatic type inference for JavaScript types, so I think we would need to add that.

// Convert from JS types automatically
const t = Arrow.Table.from({
	Country: ["USA", "Canada", "Mexico"],
	GDP: [123, 234, 345],
})

// I'd also like Arrow to support other common JS table formats:
const t = Arrow.Table.from([
	{Country: "USA", GDP: 123},
	{Country: "Canada", GDP: 234},
	{Country: "Mexico", GDP: 345},
])

const t = Arrow.Table.from([
	["Country", "GDP"],
	["USA", 123],
	["Canada", 234],
	["Mexico", 345],
])

Thanks to Thiago for the suggestions!

Issue Links

• is duplicated by: ARROW-12580 [JS] Infer types for plain JS arrays