INNER CODE UNIT · TypeScript

replaceFormulasWithPlaceholders

RyanYipeng/SyncCaster · apps/extension/src/content-scripts/index.ts:465

function replaceFormulasWithPlaceholders(root: HTMLElement, formulaMap: Map<string, { tex: string; isDisplay: boolean }>): void {
  const doc = root.ownerDocument || document;
  const DS = String.fromCharCode(36);
  
  root.querySelectorAll('[data-formula-id]').forEach((node) => {
    const id = node.getAttribute('data-formula-id');
    if (!id) return;
    const formula = formulaMap.get(id);
    if (!formula) return;
    
    const wrapper = doc.createElement('span');
    wrapper.setAttribute('data-sync-math', 'true');
    wrapper.setAttribute('data-tex', formula.tex);
    wrapper.setAttribute('data-display', String(formula.isDisplay));
    wrapper.textContent = formula.isDisplay ? DS + DS + formula.tex + DS + DS : DS + formula.tex + DS;
    node.replaceWith(wrapper);
  });
  

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