Function freshCustomAuthSlug

packages/core/sdk/src/integration.ts:120–124

(taken: ReadonlySet<string>)

const shortId = (): string => Math.random().toString(36).slice(2, 8);

export const freshCustomAuthSlug = (taken: ReadonlySet<string>): string => {
  let candidate = `custom_${shortId()}`;
  while (taken.has(candidate)) candidate = `custom_${shortId()}`;
  return candidate;
};

export const mergeAuthTemplates = <T extends { readonly slug: string }>(
  existing: readonly T[],