Function variantRecord

javascript/selenium-webdriver/normalize_bidi_ast.mjs:311–324

* Build the fields for a self-contained variant record: the common fields plus * the variant's own fields (inlined from a referenced record, or taken from an * inline group). Returns `{ fields, label }` where label names the variant.

(commonFields, entry, defMap, index)

 * inline group). Returns `{ fields, label }` where label names the variant.
 */
function variantRecord(commonFields, entry, defMap, index) {
  const common = commonFields.map((f) => structuredClone(f))
  if (isGroupRef(entry)) {
    const target = defMap.get(entry.Value)
    const ownFields =
      target && Array.isArray(target.Properties) ? structuredClone(target.Properties) : [structuredClone({ ...entry })]
    return { fields: [...common, ...ownFields], label: splitName(entry.Value).local, supersedes: entry.Value }
  }
  // inline group: label by its sole distinguishing field when there is one
  const ownFields = structuredClone(entry.Properties)
  const named = ownFields.filter((f) => f && typeof f === 'object' && f.Name)
  const label = named.length === 1 ? pascal(named[0].Name) : `Variant${index}`
  return { fields: [...common, ...ownFields], label }
}

/**
 * Rewrite variant-union params into a canonical `variable` union of