Function mergeCustomProvider

src/setup/gateways.ts:230–247

(config: any, entry: CustomProviderEntry, opts?: { setDefault?: boolean; defaultModel?: string })

 * exists, it's replaced in place (no duplicates).
 */
export function mergeCustomProvider(config: any, entry: CustomProviderEntry, opts?: { setDefault?: boolean; defaultModel?: string }): any {
  const cfg = config && typeof config === 'object' ? config : {};
  cfg.providers = cfg.providers && typeof cfg.providers === 'object' ? cfg.providers : {};
  const custom: CustomProviderEntry[] = Array.isArray(cfg.providers.custom) ? cfg.providers.custom : [];

  const idx = custom.findIndex(c => c && c.name === entry.name);
  if (idx >= 0) custom[idx] = entry;
  else custom.push(entry);
  cfg.providers.custom = custom;

  if (opts?.setDefault) {
    cfg.defaults = cfg.defaults && typeof cfg.defaults === 'object' ? cfg.defaults : {};
    cfg.defaults.provider = entry.name;
    const model = opts.defaultModel ?? entry.models?.[0]?.id;
    if (model) cfg.defaults.model = model;
  }
  return cfg;
}