pitrou commented on code in PR #40960:
URL: https://github.com/apache/arrow/pull/40960#discussion_r1551307115
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js/src/type.ts:
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@@ -333,23 +333,47 @@ export class Decimal extends DataType<Type.Decimal> {
/** @ignore */
export type Dates = Type.Date | Type.DateDay | Type.DateMillisecond;
/** @ignore */
-export interface Date_<T extends Dates = Dates> extends DataType<T> { TArray:
Int32Array; TValue: Date; ArrayType: TypedArrayConstructor<Int32Array> }
+type DateType = {
+ [Type.Date]: { TArray: Int32Array | BigInt64Array };
+ [Type.DateDay]: { TArray: Int32Array };
+ [Type.DateMillisecond]: { TArray: BigInt64Array };
+};
+/** @ignore */
+export interface Date_<T extends Dates = Dates> extends DataType<T> {
+ TArray: DateType[T]['TArray'];
+ TValue: number;
+}
/** @ignore */
export class Date_<T extends Dates = Dates> extends DataType<T> {
constructor(public readonly unit: DateUnit) {
super(Type.Date as T);
Review Comment:
For the record, why is it using `Type.Date` here instead of one of the
unit-specific ones? This seems to ignore the `unit` argument, but I'm probably
missing something since I don't know TypeScript :-)
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