Best way to handle deleting table/views from the server?

[mhkeller]

I'm updating from 2.10.0 to 3.1.3 and running into an lifecycle issue. There used to be eject_table and host_table methods which handled cleanup when replacing datasets purely on the server. Without those, I'm running into an issue where it seems I have to handle view/table cleanup on the client. (Note: this may have always been the case and I wasn't properly cleaning up views and it's now just more obvious in 3.0).

Reading the docs about the Node.js backend detailed here it says that when you use await websocket.open_table("table_one"); the "table and view objects live on the server."

Here is the example from the docs:

const { WebSocketServer, table } = require("@finos/perspective");
const fs = require("fs");

// Start a WS/HTTP host on port 8080.  The `assets` property allows
// the `WebSocketServer()` to also serves the file structure rooted in this
// module's directory.
const host = new WebSocketServer({ assets: [__dirname], port: 8080 });

// Read an arrow file from the file system and host it as a named table.
const arr = fs.readFileSync(__dirname + "/superstore.lz4.arrow");
await table(arr, { name: "table_one" });

I can keep track of a reference to the table object returned by await table but when I call .delete() on this object, it says I have views that depend on it and it throws an error.

On the client, I can call elem.getView() and elem.getTable() and delete the returned objects and that works but I get the following warning:

00960502:0x18cc90  WARN  _viewer::session::view_subscription:169 View dropped without calling `delete()` 
warn @ client.js?v=f4f1a4ff:2675
n.wbg.__wbg_warn_5d3f783b0bae8943 @ @finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:1690
$func6359 @ 00960502:0x18cc90
$func477 @ 00960502:0x7c14c
$func4741 @ 00960502:0x17612c
$func2334 @ 00960502:0x1235f9
$func4670 @ 00960502:0x173343
$func8240 @ 00960502:0x1f248b
$func718 @ 00960502:0xb0036
$func829 @ 00960502:0xbf748
$func623 @ 00960502:0x9ec36
$func759 @ 00960502:0xb5990
$__wbindgen_export_8 @ 00960502:0x186a04
ke @ @finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:252
i @ @finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:202
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@finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:928 Uncaught (in promise) Error: Unknown error: remove_update
    at n.wbg.__wbindgen_error_new (@finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:928:13)
    at 00960502:0x102c4c
    at 00960502:0x167a98
    at 00960502:0x60369
    at 00960502:0x109608
    at 00960502:0x9ec36
    at 00960502:0xb5990
    at 00960502:0x186a04
    at ke (@finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:252:5)
    at i (@finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:202:14)

And then the following error:

Uncaught (in promise) Error: Unknown error: remove_update
    at n.wbg.__wbindgen_error_new (@finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:928:13)
    at 00960502:0x102c4c
    at 00960502:0x167a98
    at 00960502:0x60369
    at 00960502:0x109608
    at 00960502:0x9ec36
    at 00960502:0xb5990
    at 00960502:0x186a04
    at ke (@finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:252:5)
    at i (@finos_perspective-viewer_dist_esm_perspective-viewer__inline__js.js?v=f4f1a4ff:202:14)

Can these errors be ignored? Is there a better way to handle replacing a table purely on the server?