fails to import a module because of invalid utf8 sequence

[sigmaSd]

Version: Deno 1.43.5

import {} from "npm:js-clipper@1.0.1";

error: Unable to load /home/mrcool/.cache/deno/npm/registry.npmjs.org/js-clipper/1.0.1/clipper.js imported from file:///home/mrcool/dev/deno/lab/fffz/b.ts

Caused by:
    invalid utf-8 sequence of 1 bytes from index 165105

The problematic character is in line 5955 of clipper.js

[sigmaSd]

reduced case
a.js

// ł

deno run a.js # invalid data

[sigmaSd]

to create the corrupted file you can use this script (in case copy/pasting messes the character)

Deno.writeFileSync("./cc.js", new Uint8Array([47, 47, 32, 197, 10]));

it fails here https://github.com/denoland/deno/blob/main/cli/module_loader.rs#L174

[sigmaSd]

I pinpointed the problem to https://github.com/denoland/deno_graph/blob/main/src/source/mod.rs#L725
the reproduction code is simply utf16 but deno assumes its utf8
bun and node detect it correctly