Failed to load from ES module

[vsekhar]

Describe the bug
SyntaxError: Unexpected token 'export' when importing to a module.

To Reproduce
Steps to reproduce the behavior:

1. Create minimal scikit.js:

import * as tf from '@tensorflow/tfjs';
import * as sk from 'scikitjs';
sk.setBackend(tf)

2. Run using node scikit.js.
3. Error:

(node:576418) Warning: To load an ES module, set "type": "module" in the package.json or use the .mjs extension.
(Use `node --trace-warnings ...` to show where the warning was created)
/workspace/node_modules/scikitjs/dist/esm/index.js:15
export { LinearRegression } from './linear_model/LinearRegression';
^^^^^^

SyntaxError: Unexpected token 'export'
    at internalCompileFunction (node:internal/vm:128:18)
    at wrapSafe (node:internal/modules/cjs/loader:1280:20)
    at Module._compile (node:internal/modules/cjs/loader:1332:27)
    at Module._extensions..js (node:internal/modules/cjs/loader:1427:10)
    at Module.load (node:internal/modules/cjs/loader:1206:32)
    at Module._load (node:internal/modules/cjs/loader:1022:12)
    at cjsLoader (node:internal/modules/esm/translators:366:17)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/translators:315:7)
    at ModuleJob.run (node:internal/modules/esm/module_job:222:25)
    at async ModuleLoader.import (node:internal/modules/esm/loader:323:24)

Node.js v20.12.2

Desktop (please complete the following information):

• OS: Ubuntu Jammy
• Version: Scikitjs 1.24.0

Additional context
It may be related to unspecified ESM/CJS in package.json.

See recommendations here: https://publint.dev/scikitjs@1.24.0