Fix rollup incompatibility, fix test failure

[powerivq]

Build has been broken and npm install has not been working due to rollup plugin versions incompatible. Had to change to the newer version.

ava@3 no longer works with the dependencies. Tests always fail due to importing esm from dependencies. I had to upgrade to ava@6. This forces me to fix the ts imports since it is failing various tests. This PR seems to be the easiest way to fix it. It basically changes all imports to import xxx from 'xxx.js';

tsconfig is changed to module. Unit tests that use cb have been deprecated in ava, so I updated them to the promise-style tests.

I cannot neatly split it into PRs, since nothing is going to build till everything gets fixed.

[Copilot]

Pull Request Overview

This PR addresses build and test failures caused by rollup plugin incompatibility by updating dependency versions and converting all TypeScript imports to include a “.js” extension in compliance with the newer ECMAScript module standards. In addition, the PR updates tsconfig settings (using nodenext and allowing TS extension imports) and revises test callbacks to use Promise‑resolution instead of t.end().

Reviewed Changes

Copilot reviewed 284 out of 287 changed files in this pull request and generated no comments.

File	Description
src/worker-thread/tsconfig.json	Updated module resolution and target to “nodenext” with additional TS flag
Various source files	All import statements now include “.js” extensions to match ESM conventions
Multiple test files	Modified test callbacks to return Promises instead of using t.end()

Comments suppressed due to low confidence (1)

src/worker-thread/tsconfig.json:10

• The tsconfig.json has been updated to use 'nodenext' and includes 'allowImportingTsExtensions'. Please verify that these changes are fully compatible with your build process and dependency chain.

    "module": "nodenext",