initial commit

bingo/tools/build-demo.mjs

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+// Собирает демо-версию страницы (без сервера) для предпросмотра: dist/demo.html
+import { readFileSync, writeFileSync, mkdirSync } from 'node:fs';
+let s = readFileSync(new URL('../public/index.html', import.meta.url), 'utf8');
+s = s.replace(/<!--FONTS-->[\s\S]*?<!--\/FONTS-->/,
+  '<link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>' +
+  '<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Manrope:wght@400..800&family=Unbounded:wght@500..900&display=swap">');
+s = s.replace('<script>\n(() => {', '<script>window.BINGO_FORCE_DEMO = true;</script>\n<script>\n(() => {');
+s = s.replace(/<!doctype html>\s*<html lang="ru">\s*<head>\s*/i, '')
+     .replace(/<meta charset="utf-8">\s*/, '')
+     .replace(/<meta name="viewport"[^>]*>\s*/, '')
+     .replace(/<\/head>\s*<body>\s*/, '\n')
+     .replace(/<\/body>\s*<\/html>\s*$/, '\n');
+mkdirSync(new URL('../dist/', import.meta.url), { recursive: true });
+writeFileSync(new URL('../dist/demo.html', import.meta.url), s);
+console.log('dist/demo.html', s.length, 'bytes');