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https://issues.apache.org/jira/browse/ARROW-10794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17257631#comment-17257631
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Marc Prud'hommeaux commented on ARROW-10794:
--------------------------------------------
I'm experiencing this as well. It looks like it is a regression of
https://issues.apache.org/jira/browse/ARROW-8394
> Typescript Arrowjs Class 'RecordBatch<T>' incorrectly extends base class
> 'StructVector<T>
> -----------------------------------------------------------------------------------------
>
> Key: ARROW-10794
> URL: https://issues.apache.org/jira/browse/ARROW-10794
> Project: Apache Arrow
> Issue Type: Bug
> Components: JavaScript
> Affects Versions: 2.0.0
> Reporter: vikash
> Priority: Blocker
> Attachments: Screenshot_1.png
>
>
> i am trying to use apache-arrow js in angular typescript version
> 4.0.2 ,for that i have seen issues in Typescript failed to compile
> steps to reprodcue
> ---------------------
> 1) install angular cli npm install -g @angular/cli
> 2) create new project using ng new my-app
> 3) install apache arrow using npm install apache-arrow
> 4) file app.componenet.ts have added below code
> ```
> import \{ Component } from '@angular/core';
> import \{ Table } from 'apache-arrow';
> import \{ readFileSync } from 'fs';
> @Component({
> selector: 'app-root',
> templateUrl: './app.component.html',
> styleUrls: ['./app.component.css']
> })
> export class AppComponent {
> title = 'arrow-typescript';
> arrow = readFileSync('simple.arrow');
> table = Table.from([this.arrow]);
> }
> ```
>
> but when i am using npm run build its failed with below error
> Error: node_modules/apache-arrow/recordbatch.d.ts:17:18 - error TS2430:
> Interface 'RecordBatch<T>' incorrectly extends interface 'StructVector<T>'.
> The types of 'slice(...).clone' are incompatible between these types.
> Type '(data: Data<Struct<T>>, children?: AbstractVector<any>[] | undefined)
> => RecordBatch<T>' is not assignable to type '<R extends DataType<Type, any>
> = Struct<T>>(data: Data<R>, children?: AbstractVector<R>[] | undefined) =>
> VectorType<R>'.
> Types of parameters 'data' and 'data' are incompatible.
> Type 'Data<R>' is not assignable to type 'Data<Struct<T>>'.
> Type 'R' is not assignable to type 'Struct<T>'.
> Property 'dataTypes' is missing in type 'DataType<Type, any>' but required
> in type 'Struct<T>'.
> 17 export interface RecordBatch<T extends {
> ~~~~~~~~~~~
> node_modules/apache-arrow/type.d.ts:458:5
> 458 dataTypes: T;
> ~~~~~~~~~
> 'dataTypes' is declared here.
> node_modules/apache-arrow/recordbatch.d.ts:24:22 - error TS2415: Class
> 'RecordBatch<T>' incorrectly extends base class 'StructVector<T>'.
> 24 export declare class RecordBatch<T extends {
> ~~~~~~~~~~~
> node_modules/apache-arrow/ipc/reader.d.ts:236:5 - error TS2717: Subsequent
> property declarations must have the same type. Property 'schema' must be of
> type 'Schema<T>', but here has type 'Schema<any>'.
> 236 schema: Schema;
> ~~~~~~
> node_modules/apache-arrow/ipc/reader.d.ts:189:5
> 189 schema: Schema<T>;
> ~~~~~~
> 'schema' was also declared here.
>
>
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