Legacy calculator

<script src="https://warcraftforever.com/legacy/latest.js"></script>
<div id="legacy"></div>
<script>
  const calculator = WarcraftForever.Legacy.mount('#legacy', { locale: 'en' });
  calculator.on('submit', (state) => {
    const saved = { revision: state.revision, code: calculator.exportBuild('compact') };
    console.log(saved, calculator.exportBuild('structured'));
  });
</script>

Legacy uses the same mount lifecycle, layouts and interaction model as Talents. It uses the definition’s own point budget and spending gates. Do not pass class or maxLevel. Its state carries id: 'legacy' and pointBudget in place of a class and character level. The Save button appears when all points are spent.

Use view: 'icons' or view: 'tree' with build: { code, revision } for a saved display, and exportBuild('structured') for custom rendering. Unknown client effects remain explicitly unknown; locked nodes cannot be allocated.

Legacy exports default to compact; structured includes the calculator ID, revision, selected trees and spells. The headless result also reports pointBudget. The Blizzard-format Legacy serialization contract has not been verified, so blizzard rejects with unsupported-format instead of inventing an encoding. Existing Legacy URLs remain valid.

/legacy/headless.mjs exports definition, decode, validate, encode, diff, and createClient. Their headless contracts match Talents, with no class or maximum-level argument:

import { validate, encode } from 'https://warcraftforever.com/legacy/headless.mjs';
const state = await validate({ allocation: { 'legacy-professions-working-overtime': 5 } });
const exported = await encode({ allocation: state.allocation, format: 'structured' });
console.log(exported.build);