function requireAttr()

in src/components/SignatureDetail/sparkline.ts [42:48]

• 7 lines of code
• 2 McCabe index (conditional complexity)

function requireAttr(svg: SVGElement, field: string): string {
  const item = svg.attributes.getNamedItem(field)?.value;
  if (item === undefined) {
    throw new Error(`${field} missing`);
  }
  return item;
}