[jira] [Commented] (ARROW-8394) Typescript compiler errors for arrow d.ts files, when using es2015-esm package

["Paul Taylor (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-8394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17119867#comment-17119867 ] 

Paul Taylor commented on ARROW-8394:
------------------------------------

Thanks [~pprice], I'll look into this. I had to do a bunch of weird things to trick the 3.5 compiler into propagating the types, so I'm hoping I can back some of those out to get it working in 3.9 and simplify the typedefs along the way.

> Typescript compiler errors for arrow d.ts files, when using es2015-esm package
> ------------------------------------------------------------------------------
>
>                 Key: ARROW-8394
>                 URL: https://issues.apache.org/jira/browse/ARROW-8394
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: JavaScript
>    Affects Versions: 0.16.0
>            Reporter: Shyamal Shukla
>            Priority: Blocker
>
> Attempting to use apache-arrow within a web application, but typescript compiler throws the following errors in some of arrow's .d.ts files
> import \{ Table } from "../node_modules/@apache-arrow/es2015-esm/Arrow";
> export class SomeClass {
> .
> .
> constructor() {
> const t = Table.from('');
> }
> *node_modules/@apache-arrow/es2015-esm/column.d.ts:14:22* - error TS2417: Class static side 'typeof Column' incorrectly extends base class static side 'typeof Chunked'. Types of property 'new' are incompatible.
> *node_modules/@apache-arrow/es2015-esm/ipc/reader.d.ts:238:5* - error TS2717: Subsequent property declarations must have the same type. Property 'schema' must be of type 'Schema', but here has type 'Schema'.
> 238 schema: Schema;
> *node_modules/@apache-arrow/es2015-esm/recordbatch.d.ts:17:18* - error TS2430: Interface 'RecordBatch' incorrectly extends interface 'StructVector'. The types of 'slice(...).clone' are incompatible between these types.
> the tsconfig.json file looks like
> {
>  "compilerOptions": {
>  "target":"ES6",
>  "outDir": "dist",
>  "baseUrl": "src/"
>  },
>  "exclude": ["dist"],
>  "include": ["src/*.ts"]
> }



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