/**
* Builds the inert document rendered by Mail's same-origin, script-disabled
* message iframe. Using srcDoc gives rrweb a normal iframe navigation/load
* lifecycle; the host includes theme styles up front and adds interaction
* listeners after load.
*/
export function buildEmailIframeDocument(
headHtml: string,
bodyHtml: string,
themeCss = "",
): string {
const themeStyle = themeCss
? ` \n`
: "";
return `
${headHtml}
${themeStyle}
${bodyHtml}
`;
}