export function getOpenAiMissingApiKeyMessage(envVar = 'OPENAI_API_KEY'): string {
  return `API key is not set. Set the ${envVar} environment variable or add \`apiKey\` to the provider config.`;
}

export function restoreEnvVar(name: string, value: string | undefined): void {
  if (value === undefined) {
    Reflect.deleteProperty(process.env, name);
    return;
  }

  Object.assign(process.env, { [name]: value });
}