Function buildAllowedFieldSet

actions/setup/js/allowed_issue_fields.cjs:23–26

* Build a lowercased Set from allowedFields. * Returns null when no restriction applies (empty list, non-array, or wildcard "*"). * @param {string[]} allowedFields * @returns {Set |null}

(allowedFields)

 * @returns {Set<string>|null}
 */
function buildAllowedFieldSet(allowedFields) {
  if (!Array.isArray(allowedFields) || allowedFields.length === 0 || allowedFields.includes("*")) return null;
  return new Set(allowedFields.map(f => f.toLowerCase()));
}

/**
 * Validate one issue field name against configured allowed-fields.