YouTube.js/src/platform/jsruntime/jinter.ts

import { Jinter } from 'jintr';
import type { VMPrimative } from '../../types/PlatformShim.js';
import { Log } from '../lib.js';

const TAG = 'JsRuntime';

export default function evaluate(code: string, env: Record<string, VMPrimative>) {
  Log.debug(TAG, 'Evaluating JavaScript:\n', code);

  const runtime = new Jinter();

  for (const [ key, value ] of Object.entries(env)) {
    runtime.scope.set(key, value);
  }

  const result = runtime.evaluate(code);

  Log.debug(TAG, 'Done. Result:', result);

  return result;
}