domoritz opened a new pull request, #40892:
URL: https://github.com/apache/arrow/pull/40892
Tested with
```ts
const date = new Date("2023-03-29T12:34:56Z");
console.log("original", date)
console.log("=> vec")
const vec = arrow.vectorFromArray([date])
console.log(vec.toArray())
console.log(vec.toJSON())
console.log(vec.type)
console.log(vec.get(0))
console.log("=> vec2")
const vec2 = arrow.vectorFromArray([date], new arrow.DateMillisecond)
console.log(vec2.toArray())
console.log(vec.toJSON())
console.log(vec2.type)
console.log(vec2.get(0))
console.log("=> table")
const table = arrow.tableFromJSON([{ date }])
console.log(table.toArray())
console.log(table.schema.fields[0].type)
console.log(table.getChildAt(0)?.get(0))
console.log("=> table2")
const table2 = arrow.tableFromIPC(arrow.tableToIPC(table));
console.log(table2.toArray())
console.log(table2.schema.fields[0].type)
console.log(table2.getChildAt(0)?.get(0))
console.log("=> table3")
const table3 = new arrow.Table({ dates: vec2 })
console.log(table3.toArray())
console.log(table3.schema.fields[0].type)
console.log(table3.getChildAt(0)?.get(0))
```
```
=> table
[
{"date": Wed Mar 29 2023 08:34:56 GMT-0400 (Eastern Daylight Time)}
]
TimestampMillisecond {
typeId: 10,
unit: 1,
timezone: undefined,
toString: [Function: toString],
ArrayType: [class Int32Array],
[Symbol(Symbol.toStringTag)]: "Timestamp",
children: null,
OffsetArrayType: [class Int32Array],
}
2023-03-29T12:34:56.000Z
=> table2
[
{"date": Wed Mar 29 2023 08:34:56 GMT-0400 (Eastern Daylight Time)}
]
Timestamp_ {
typeId: 10,
unit: 1,
timezone: null,
toString: [Function: toString],
ArrayType: [class Int32Array],
children: null,
OffsetArrayType: [class Int32Array],
}
2023-03-29T12:34:56.000Z
=> table3
[
{"dates": Wed Mar 29 2023 08:34:56 GMT-0400 (Eastern Daylight Time)}
]
DateMillisecond {
typeId: 8,
unit: 1,
toString: [Function: toString],
ArrayType: [class Int32Array],
[Symbol(Symbol.toStringTag)]: "Date",
children: null,
OffsetArrayType: [class Int32Array],
}
2023-03-29T12:34:56.000Z
```
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