Function init

src/core/init.ts:30–147

({
  userOptions,
  providerId,
  action,
  host,
  cookies: reqCookies,
  callbackUrl: reqCallbackUrl,
  csrfToken: reqCsrfToken,
  isPost,
}: InitParams)

/** Initialize all internal options and cookies. */
export async function init({
  userOptions,
  providerId,
  action,
  host,
  cookies: reqCookies,
  callbackUrl: reqCallbackUrl,
  csrfToken: reqCsrfToken,
  isPost,
}: InitParams): Promise<{
  options: InternalOptions
  cookies: cookie.Cookie[]
}> {
  const url = parseUrl(host)

  const secret = createSecret({ userOptions, url })

  const { providers, provider } = parseProviders({
    providers: userOptions.providers,
    url,
    providerId,
  })

  const maxAge = 30 * 24 * 60 * 60 // Sessions expire after 30 days of being idle by default

  // User provided options are overriden by other options,
  // except for the options with special handling above
  const options: InternalOptions = {
    debug: false,
    pages: {},
    theme: {
      colorScheme: "auto",
      logo: "",
      brandColor: "",
    },
    // Custom options override defaults
    ...userOptions,
    // These computed settings can have values in userOptions but we override them
    // and are request-specific.
    url,
    action,
    provider,
    cookies: {
      ...cookie.defaultCookies(
        userOptions.useSecureCookies ?? url.base.startsWith("https://")
      ),
      // Allow user cookie options to override any cookie settings above
      ...userOptions.cookies,
    },
    secret,
    providers,
    // Session options
    session: {
      // If no adapter specified, force use of JSON Web Tokens (stateless)
      strategy: userOptions.adapter ? "database" : "jwt",
      maxAge,
      updateAge: 24 * 60 * 60,
      ...userOptions.session,