[Deno] Error While Installing /functions Package

[aunyks]

Describe the bug
When running a Deno script that imports @gltf-transform/functions via https://esm.sh/@gltf-transform/functions, a 500 HTTP response is returned when it tries to install https://esm.sh/v107/ndarray-lanczos@0.2.0/deno/ndarray-lanczos.js.

The error is:

/* esm.sh - error */
throw new Error("[esm.sh] " + "resovleESModule: open /tmp/esm-build-a5562132cd84dbc9fc7056377a6f582714f47852-3a3152a6/node_modules/ndarray-lanczos/dist/ndarray-lanczos.modern.js: no such file or directory");
export default null;

I suspect this is related to the build configuration of donmccurdy/ndarray-lanczos.

Steps To Reproduce

1. Create a file error-test.js with this as the only line: import * as f from 'https://esm.sh/@gltf-transform/functions'
2. Run deno run --allow-net error-test.js

Expected behavior
An error-free install and script execution.

Versions:

• Deno: 1.25.0
• gltf-transform: 3.0.3

[donmccurdy]

Unfortunately there are a number of obstacles. I'd like to support Deno, but in practice it's pretty complicated. Certain decisions by the TypeScript team, and the difficulty of running the unit tests in multiple environments, have been obstacles. See #457.

I'll take a look at the ndarray issues, those may be simple enough to fix:

• Update and fix ESM builds ndarray-lanczos#103
• Full ESM support ndarray-pixels#119

But I'm not sure Deno will 'just work' even with those issues resolved. If you'd be up for doing some more investigation here, that'd be very welcome -- thanks!

[donmccurdy]

Possible fix, at least for the ndarray-related part of the problem:

• Upgrade ndarray-pixels, ndarray-lanczos #835

[aunyks]

Understood, if #835 doesn't fix this then I'll see if I can look into it some more. Thanks for the quick response anyway!

[donmccurdy]

Published v3.0.4 — Haven't tested thoroughly, but this much seems to work:

import { Document, DenoIO } from 'https://esm.sh/@gltf-transform/core';
import { KHRONOS_EXTENSIONS } from 'https://esm.sh/@gltf-transform/extensions';
import { dedup } from 'https://esm.sh/@gltf-transform/functions';

const io = new DenoIO().registerExtensions(KHRONOS_EXTENSIONS);
const document = new Document();

console.log(document);

[aunyks]

Works for me as well! Thanks for addressing.