react-email/src/utils/types/email-template.ts

A live preview of your emails right in your browser.

export interface EmailTemplate {
  (props: Record<string, unknown> | Record<string, never>): React.ReactNode;
  PreviewProps?: Record<string, unknown>;
}

export const isEmailTemplate = (val: unknown): val is EmailTemplate => {
  return typeof val === 'function';
};