Transform

function transformForAllClients(html: string): TransformResult[]

interface TransformResult {
  clientId: string;       // e.g. "gmail-web"
  html: string;           // Transformed HTML for this client
  warnings: CSSWarning[]; // Warnings specific to this transform
}

import { transformForAllClients } from "@emailens/engine";

const results = transformForAllClients(emailHtml);

for (const result of results) {
  console.log(`${result.clientId}: ${result.warnings.length} warnings`);
  // Write transformed HTML to file, render in iframe, etc.
}

function transformForClient(html: string, clientId: string): TransformResult

import { transformForClient } from "@emailens/engine";

const result = transformForClient(emailHtml, "outlook-windows-legacy");
console.log(result.html); // HTML rewritten for Outlook Classic (Word engine)