Files
baoyu-skills/skills/baoyu-markdown-to-html/scripts/md/render.ts
T
2026-02-03 11:49:07 -06:00

880 lines
25 KiB
TypeScript

#!/usr/bin/env npx tsx
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";
import frontMatter from "front-matter";
import hljs from "highlight.js/lib/core";
import { marked, type RendererObject, type Tokens } from "marked";
import readingTime, { type ReadTimeResults } from "reading-time";
import { unified } from "unified";
import remarkParse from "remark-parse";
import remarkCjkFriendly from "remark-cjk-friendly";
import remarkStringify from "remark-stringify";
import {
markedAlert,
markedFootnotes,
markedInfographic,
markedMarkup,
markedPlantUML,
markedRuby,
markedSlider,
markedToc,
MDKatex,
} from "./extensions/index.js";
import {
COMMON_LANGUAGES,
highlightAndFormatCode,
} from "./utils/languages.js";
type ThemeName = string;
const SCRIPT_DIR = path.dirname(fileURLToPath(import.meta.url));
const THEME_DIR = path.resolve(SCRIPT_DIR, "themes");
const EXTERNAL_THEME_CONFIG_PATH =
process.env.MD_THEME_CONFIG_PATH
|| "/Users/jimliu/GitHub/md/packages/shared/src/configs/theme.ts";
const EXTERNAL_THEME_DIR =
process.env.MD_THEME_DIR
|| path.resolve(path.dirname(EXTERNAL_THEME_CONFIG_PATH), "theme-css");
const FALLBACK_THEMES: ThemeName[] = ["default", "grace", "simple"];
const DEFAULT_STYLE = {
primaryColor: "#0F4C81",
fontFamily:
"-apple-system-font,BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB , Microsoft YaHei UI , Microsoft YaHei ,Arial,sans-serif",
fontSize: "16px",
foreground: "0 0% 3.9%",
blockquoteBackground: "#f7f7f7",
};
Object.entries(COMMON_LANGUAGES).forEach(([name, lang]) => {
hljs.registerLanguage(name, lang);
});
export { hljs };
function stripOutputScope(cssContent: string): string {
let css = cssContent;
css = css.replace(/#output\s*\{/g, "body {");
css = css.replace(/#output\s+/g, "");
css = css.replace(/^#output\s*/gm, "");
return css;
}
function discoverThemesFromDir(dir: string): string[] {
if (!fs.existsSync(dir)) {
return [];
}
return fs
.readdirSync(dir)
.filter((name) => name.endsWith(".css"))
.map((name) => name.replace(/\.css$/i, ""))
.filter((name) => name.toLowerCase() !== "base");
}
function readThemeNamesFromConfig(configPath: string): string[] {
if (!fs.existsSync(configPath)) {
return [];
}
const content = fs.readFileSync(configPath, "utf-8");
const match = content.match(/themeOptionsMap\s*=\s*\{([\s\S]*?)\n\}/);
if (!match) {
return [];
}
return Array.from(match[1].matchAll(/^\s*([a-zA-Z0-9_-]+)\s*:/gm)).map(
(item) => item[1]!
);
}
function resolveThemeNames(): ThemeName[] {
const localThemes = discoverThemesFromDir(THEME_DIR);
const externalThemes = discoverThemesFromDir(EXTERNAL_THEME_DIR);
const configThemes = readThemeNamesFromConfig(EXTERNAL_THEME_CONFIG_PATH);
const combined = new Set<ThemeName>([
...localThemes,
...externalThemes,
...configThemes,
]);
const resolved = Array.from(combined).filter((name) =>
fs.existsSync(path.join(THEME_DIR, `${name}.css`))
|| fs.existsSync(path.join(EXTERNAL_THEME_DIR, `${name}.css`))
);
return resolved.length ? resolved : FALLBACK_THEMES;
}
const THEME_NAMES: ThemeName[] = resolveThemeNames();
marked.setOptions({
breaks: true,
});
marked.use(markedSlider());
interface IOpts {
legend?: string;
citeStatus?: boolean;
countStatus?: boolean;
isMacCodeBlock?: boolean;
isShowLineNumber?: boolean;
themeMode?: "light" | "dark";
}
interface RendererAPI {
reset: (newOpts: Partial<IOpts>) => void;
setOptions: (newOpts: Partial<IOpts>) => void;
getOpts: () => IOpts;
parseFrontMatterAndContent: (markdown: string) => {
yamlData: Record<string, any>;
markdownContent: string;
readingTime: ReadTimeResults;
};
buildReadingTime: (reading: ReadTimeResults) => string;
buildFootnotes: () => string;
buildAddition: () => string;
createContainer: (html: string) => string;
}
interface ParseResult {
yamlData: Record<string, any>;
markdownContent: string;
readingTime: ReadTimeResults;
}
function escapeHtml(text: string): string {
return text
.replace(/&/g, "&amp;")
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;")
.replace(/"/g, "&quot;")
.replace(/'/g, "&#39;")
.replace(/`/g, "&#96;");
}
function buildAddition(): string {
return `
<style>
.preview-wrapper pre::before {
position: absolute;
top: 0;
right: 0;
color: #ccc;
text-align: center;
font-size: 0.8em;
padding: 5px 10px 0;
line-height: 15px;
height: 15px;
font-weight: 600;
}
</style>
`;
}
function buildFootnoteArray(footnotes: [number, string, string][]): string {
return footnotes
.map(([index, title, link]) =>
link === title
? `<code style="font-size: 90%; opacity: 0.6;">[${index}]</code>: <i style="word-break: break-all">${title}</i><br/>`
: `<code style="font-size: 90%; opacity: 0.6;">[${index}]</code> ${title}: <i style="word-break: break-all">${link}</i><br/>`
)
.join("\n");
}
function transform(legend: string, text: string | null, title: string | null): string {
const options = legend.split("-");
for (const option of options) {
if (option === "alt" && text) {
return text;
}
if (option === "title" && title) {
return title;
}
}
return "";
}
const macCodeSvg = `
<svg xmlns="http://www.w3.org/2000/svg" version="1.1" x="0px" y="0px" width="45px" height="13px" viewBox="0 0 450 130">
<ellipse cx="50" cy="65" rx="50" ry="52" stroke="rgb(220,60,54)" stroke-width="2" fill="rgb(237,108,96)" />
<ellipse cx="225" cy="65" rx="50" ry="52" stroke="rgb(218,151,33)" stroke-width="2" fill="rgb(247,193,81)" />
<ellipse cx="400" cy="65" rx="50" ry="52" stroke="rgb(27,161,37)" stroke-width="2" fill="rgb(100,200,86)" />
</svg>
`.trim();
function parseFrontMatterAndContent(markdownText: string): ParseResult {
try {
const parsed = frontMatter(markdownText);
const yamlData = parsed.attributes;
const markdownContent = parsed.body;
const readingTimeResult = readingTime(markdownContent);
return {
yamlData: yamlData as Record<string, any>,
markdownContent,
readingTime: readingTimeResult,
};
} catch (error) {
console.error("Error parsing front-matter:", error);
return {
yamlData: {},
markdownContent: markdownText,
readingTime: readingTime(markdownText),
};
}
}
export function initRenderer(opts: IOpts = {}): RendererAPI {
const footnotes: [number, string, string][] = [];
let footnoteIndex = 0;
let codeIndex = 0;
const listOrderedStack: boolean[] = [];
const listCounters: number[] = [];
const isBrowser = typeof window !== "undefined";
function getOpts(): IOpts {
return opts;
}
function styledContent(styleLabel: string, content: string, tagName?: string): string {
const tag = tagName ?? styleLabel;
const className = `${styleLabel.replace(/_/g, "-")}`;
const headingAttr = /^h\d$/.test(tag) ? " data-heading=\"true\"" : "";
return `<${tag} class="${className}"${headingAttr}>${content}</${tag}>`;
}
function addFootnote(title: string, link: string): number {
const existingFootnote = footnotes.find(([, , existingLink]) => existingLink === link);
if (existingFootnote) {
return existingFootnote[0];
}
footnotes.push([++footnoteIndex, title, link]);
return footnoteIndex;
}
function reset(newOpts: Partial<IOpts>): void {
footnotes.length = 0;
footnoteIndex = 0;
setOptions(newOpts);
}
function setOptions(newOpts: Partial<IOpts>): void {
opts = { ...opts, ...newOpts };
marked.use(markedAlert());
if (isBrowser) {
marked.use(MDKatex({ nonStandard: true }, true));
}
marked.use(markedMarkup());
marked.use(markedInfographic({ themeMode: opts.themeMode }));
}
function buildReadingTime(readingTimeResult: ReadTimeResults): string {
if (!opts.countStatus) {
return "";
}
if (!readingTimeResult.words) {
return "";
}
return `
<blockquote class="md-blockquote">
<p class="md-blockquote-p">字数 ${readingTimeResult?.words},阅读大约需 ${Math.ceil(readingTimeResult?.minutes)} 分钟</p>
</blockquote>
`;
}
const buildFootnotes = () => {
if (!footnotes.length) {
return "";
}
return (
styledContent("h4", "引用链接")
+ styledContent("footnotes", buildFootnoteArray(footnotes), "p")
);
};
const renderer: RendererObject = {
heading({ tokens, depth }: Tokens.Heading) {
const text = this.parser.parseInline(tokens);
const tag = `h${depth}`;
return styledContent(tag, text);
},
paragraph({ tokens }: Tokens.Paragraph): string {
const text = this.parser.parseInline(tokens);
const isFigureImage = text.includes("<figure") && text.includes("<img");
const isEmpty = text.trim() === "";
if (isFigureImage || isEmpty) {
return text;
}
return styledContent("p", text);
},
blockquote({ tokens }: Tokens.Blockquote): string {
const text = this.parser.parse(tokens);
return styledContent("blockquote", text);
},
code({ text, lang = "" }: Tokens.Code): string {
if (lang.startsWith("mermaid")) {
if (isBrowser) {
clearTimeout(codeIndex as any);
codeIndex = setTimeout(async () => {
const windowRef = typeof window !== "undefined" ? (window as any) : undefined;
if (windowRef && windowRef.mermaid) {
const mermaid = windowRef.mermaid;
await mermaid.run();
} else {
const mermaid = await import("mermaid");
await mermaid.default.run();
}
}, 0) as any as number;
}
return `<pre class="mermaid">${text}</pre>`;
}
const langText = lang.split(" ")[0];
const isLanguageRegistered = hljs.getLanguage(langText);
const language = isLanguageRegistered ? langText : "plaintext";
const highlighted = highlightAndFormatCode(
text,
language,
hljs,
!!opts.isShowLineNumber
);
const span = `<span class="mac-sign" style="padding: 10px 14px 0;">${macCodeSvg}</span>`;
let pendingAttr = "";
if (!isLanguageRegistered && langText !== "plaintext") {
const escapedText = text.replace(/"/g, "&quot;");
pendingAttr = ` data-language-pending="${langText}" data-raw-code="${escapedText}" data-show-line-number="${opts.isShowLineNumber}"`;
}
const code = `<code class="language-${lang}"${pendingAttr}>${highlighted}</code>`;
return `<pre class="hljs code__pre">${span}${code}</pre>`;
},
codespan({ text }: Tokens.Codespan): string {
const escapedText = escapeHtml(text);
return styledContent("codespan", escapedText, "code");
},
list({ ordered, items, start = 1 }: Tokens.List) {
listOrderedStack.push(ordered);
listCounters.push(Number(start));
const html = items.map((item) => this.listitem(item)).join("");
listOrderedStack.pop();
listCounters.pop();
return styledContent(ordered ? "ol" : "ul", html);
},
listitem(token: Tokens.ListItem) {
const ordered = listOrderedStack[listOrderedStack.length - 1];
const idx = listCounters[listCounters.length - 1]!;
listCounters[listCounters.length - 1] = idx + 1;
const prefix = ordered ? `${idx}. ` : "• ";
let content: string;
try {
content = this.parser.parseInline(token.tokens);
} catch {
content = this.parser
.parse(token.tokens)
.replace(/^<p(?:\s[^>]*)?>([\s\S]*?)<\/p>/, "$1");
}
return styledContent("listitem", `${prefix}${content}`, "li");
},
image({ href, title, text }: Tokens.Image): string {
const newText = opts.legend ? transform(opts.legend, text, title) : "";
const subText = newText ? styledContent("figcaption", newText) : "";
const titleAttr = title ? ` title="${title}"` : "";
return `<figure><img src="${href}"${titleAttr} alt="${text}"/>${subText}</figure>`;
},
link({ href, title, text, tokens }: Tokens.Link): string {
const parsedText = this.parser.parseInline(tokens);
if (/^https?:\/\/mp\.weixin\.qq\.com/.test(href)) {
return `<a href="${href}" title="${title || text}">${parsedText}</a>`;
}
if (href === text) {
return parsedText;
}
if (opts.citeStatus) {
const ref = addFootnote(title || text, href);
return `<a href="${href}" title="${title || text}">${parsedText}<sup>[${ref}]</sup></a>`;
}
return `<a href="${href}" title="${title || text}">${parsedText}</a>`;
},
strong({ tokens }: Tokens.Strong): string {
return styledContent("strong", this.parser.parseInline(tokens));
},
em({ tokens }: Tokens.Em): string {
return styledContent("em", this.parser.parseInline(tokens));
},
table({ header, rows }: Tokens.Table): string {
const headerRow = header
.map((cell) => {
const text = this.parser.parseInline(cell.tokens);
return styledContent("th", text);
})
.join("");
const body = rows
.map((row) => {
const rowContent = row.map((cell) => this.tablecell(cell)).join("");
return styledContent("tr", rowContent);
})
.join("");
return `
<section style="max-width: 100%; overflow: auto">
<table class="preview-table">
<thead>${headerRow}</thead>
<tbody>${body}</tbody>
</table>
</section>
`;
},
tablecell(token: Tokens.TableCell): string {
const text = this.parser.parseInline(token.tokens);
return styledContent("td", text);
},
hr(_: Tokens.Hr): string {
return styledContent("hr", "");
},
};
marked.use({ renderer });
marked.use(markedMarkup());
marked.use(markedToc());
marked.use(markedSlider());
marked.use(markedAlert({}));
if (isBrowser) {
marked.use(MDKatex({ nonStandard: true }, true));
}
marked.use(markedFootnotes());
marked.use(
markedPlantUML({
inlineSvg: isBrowser,
})
);
marked.use(markedInfographic());
marked.use(markedRuby());
return {
buildAddition,
buildFootnotes,
setOptions,
reset,
parseFrontMatterAndContent,
buildReadingTime,
createContainer(content: string) {
return styledContent("container", content, "section");
},
getOpts,
};
}
function printUsage(): void {
console.error(
[
"Usage:",
" npx tsx src/md/render.ts <markdown_file> [--theme <name>]",
"",
"Options:",
` --theme Theme name (${THEME_NAMES.join(", ")})`,
].join("\n")
);
}
function parseArgs(argv: string[]): CliOptions | null {
let inputPath = "";
let theme: ThemeName = "default";
let keepTitle = false;
for (let i = 0; i < argv.length; i += 1) {
const arg = argv[i];
if (!arg.startsWith("--") && !inputPath) {
inputPath = arg;
continue;
}
if (arg === "--theme") {
theme = (argv[i + 1] || "") as ThemeName;
i += 1;
continue;
}
if (arg.startsWith("--theme=")) {
theme = arg.slice("--theme=".length) as ThemeName;
continue;
}
if (arg === "--keep-title") {
keepTitle = true;
continue;
}
if (arg === "--help" || arg === "-h") {
return null;
}
console.error(`Unknown argument: ${arg}`);
return null;
}
if (!inputPath) {
return null;
}
if (!THEME_NAMES.includes(theme)) {
console.error(`Unknown theme: ${theme}`);
return null;
}
return {
inputPath,
theme,
keepTitle,
};
}
interface CliOptions {
inputPath: string;
theme: ThemeName;
keepTitle: boolean;
}
function preprocessCjkEmphasis(markdown: string): string {
const processor = unified()
.use(remarkParse)
.use(remarkCjkFriendly);
const tree = processor.parse(markdown);
const visit = (node: any, parent?: any, index?: number) => {
if (node.children) {
for (let i = 0; i < node.children.length; i++) {
visit(node.children[i], node, i);
}
}
if (node.type === "strong" && parent && typeof index === "number") {
const text = extractText(node);
parent.children[index] = { type: "html", value: `<strong>${text}</strong>` };
}
if (node.type === "emphasis" && parent && typeof index === "number") {
const text = extractText(node);
parent.children[index] = { type: "html", value: `<em>${text}</em>` };
}
};
const extractText = (node: any): string => {
if (node.type === "text") return node.value;
if (node.children) return node.children.map(extractText).join("");
return "";
};
visit(tree);
const stringify = unified().use(remarkStringify);
let result = stringify.stringify(tree);
result = result.replace(/&#x([0-9A-Fa-f]+);/g, (_, hex) =>
String.fromCodePoint(parseInt(hex, 16))
);
return result;
}
function renderMarkdown(raw: string, renderer: RendererAPI): {
html: string;
readingTime: ReadTimeResults;
} {
const preprocessed = preprocessCjkEmphasis(raw);
const { markdownContent, readingTime: readingTimeResult } =
renderer.parseFrontMatterAndContent(preprocessed);
const html = marked.parse(markdownContent) as string;
return { html, readingTime: readingTimeResult };
}
function postProcessHtml(
baseHtml: string,
reading: ReadTimeResults,
renderer: RendererAPI
): string {
let html = baseHtml;
html = renderer.buildReadingTime(reading) + html;
html += renderer.buildFootnotes();
html += renderer.buildAddition();
html += `
<style>
.hljs.code__pre > .mac-sign {
display: ${renderer.getOpts().isMacCodeBlock ? "flex" : "none"};
}
</style>
`;
html += `
<style>
h2 strong {
color: inherit !important;
}
</style>
`;
return renderer.createContainer(html);
}
function formatTimestamp(date = new Date()): string {
const pad = (value: number) => String(value).padStart(2, "0");
return `${date.getFullYear()}${pad(date.getMonth() + 1)}${pad(
date.getDate()
)}${pad(date.getHours())}${pad(date.getMinutes())}${pad(date.getSeconds())}`;
}
function ensureMarkdownPath(inputPath: string): void {
if (!inputPath.toLowerCase().endsWith(".md")) {
throw new Error("Input file must end with .md");
}
}
function loadThemeCss(theme: ThemeName): {
baseCss: string;
themeCss: string;
} {
const basePathCandidates = [
path.join(THEME_DIR, "base.css"),
path.join(EXTERNAL_THEME_DIR, "base.css"),
];
const themePathCandidates = [
path.join(THEME_DIR, `${theme}.css`),
path.join(EXTERNAL_THEME_DIR, `${theme}.css`),
];
const basePath = basePathCandidates.find((candidate) =>
fs.existsSync(candidate)
);
const themePath = themePathCandidates.find((candidate) =>
fs.existsSync(candidate)
);
if (!basePath) {
throw new Error(
`Missing base CSS. Checked: ${basePathCandidates.join(", ")}`
);
}
if (!themePath) {
throw new Error(
`Missing theme CSS for "${theme}". Checked: ${themePathCandidates.join(", ")}`
);
}
return {
baseCss: fs.readFileSync(basePath, "utf-8"),
themeCss: fs.readFileSync(themePath, "utf-8"),
};
}
function buildCss(baseCss: string, themeCss: string): string {
const variables = `
:root {
--md-primary-color: ${DEFAULT_STYLE.primaryColor};
--md-font-family: ${DEFAULT_STYLE.fontFamily};
--md-font-size: ${DEFAULT_STYLE.fontSize};
--foreground: ${DEFAULT_STYLE.foreground};
--blockquote-background: ${DEFAULT_STYLE.blockquoteBackground};
}
body {
margin: 0;
padding: 24px;
background: #ffffff;
}
#output {
max-width: 860px;
margin: 0 auto;
}
`.trim();
return [variables, baseCss, themeCss].join("\n\n");
}
function normalizeThemeCss(css: string): string {
return stripOutputScope(css);
}
interface HtmlDocumentMeta {
title: string;
author?: string;
description?: string;
}
function buildHtmlDocument(meta: HtmlDocumentMeta, css: string, html: string): string {
const lines = [
"<!doctype html>",
"<html>",
"<head>",
' <meta charset="utf-8" />',
' <meta name="viewport" content="width=device-width, initial-scale=1" />',
` <title>${meta.title}</title>`,
];
if (meta.author) {
lines.push(` <meta name="author" content="${meta.author}" />`);
}
if (meta.description) {
lines.push(` <meta name="description" content="${meta.description}" />`);
}
lines.push(
` <style>${css}</style>`,
"</head>",
"<body>",
' <div id="output">',
html,
" </div>",
"</body>",
"</html>"
);
return lines.join("\n");
}
async function inlineCss(html: string): Promise<string> {
try {
const { default: juice } = await import("juice");
return juice(html, {
inlinePseudoElements: true,
preserveImportant: true,
resolveCSSVariables: false,
});
} catch (error) {
const detail = error instanceof Error ? error.message : String(error);
throw new Error(
`Missing dependency "juice" for CSS inlining. Install it first (e.g. "bun add juice" or "npm add juice"). Original error: ${detail}`
);
}
}
function normalizeCssText(cssText: string): string {
return cssText
.replace(/var\(--md-primary-color\)/g, DEFAULT_STYLE.primaryColor)
.replace(/var\(--md-font-family\)/g, DEFAULT_STYLE.fontFamily)
.replace(/var\(--md-font-size\)/g, DEFAULT_STYLE.fontSize)
.replace(/var\(--blockquote-background\)/g, DEFAULT_STYLE.blockquoteBackground)
.replace(/hsl\(var\(--foreground\)\)/g, "#3f3f3f")
.replace(/--md-primary-color:\s*[^;"']+;?/g, "")
.replace(/--md-font-family:\s*[^;"']+;?/g, "")
.replace(/--md-font-size:\s*[^;"']+;?/g, "")
.replace(/--blockquote-background:\s*[^;"']+;?/g, "")
.replace(/--foreground:\s*[^;"']+;?/g, "");
}
function normalizeInlineCss(html: string): string {
let output = html;
output = output.replace(
/<style([^>]*)>([\s\S]*?)<\/style>/gi,
(_match, attrs: string, cssText: string) =>
`<style${attrs}>${normalizeCssText(cssText)}</style>`
);
output = output.replace(
/style="([^"]*)"/gi,
(_match, cssText: string) => `style="${normalizeCssText(cssText)}"`
);
output = output.replace(
/style='([^']*)'/gi,
(_match, cssText: string) => `style='${normalizeCssText(cssText)}'`
);
return output;
}
function modifyHtmlStructure(htmlString: string): string {
let output = htmlString;
const pattern =
/<li([^>]*)>([\s\S]*?)(<ul[\s\S]*?<\/ul>|<ol[\s\S]*?<\/ol>)<\/li>/i;
while (pattern.test(output)) {
output = output.replace(pattern, "<li$1>$2</li>$3");
}
return output;
}
function removeFirstHeading(html: string): string {
return html.replace(/<h[12][^>]*>[\s\S]*?<\/h[12]>/, "");
}
async function main(): Promise<void> {
const options = parseArgs(process.argv.slice(2));
if (!options) {
printUsage();
process.exit(1);
}
const inputPath = path.resolve(process.cwd(), options.inputPath);
ensureMarkdownPath(inputPath);
if (!fs.existsSync(inputPath)) {
console.error(`File not found: ${inputPath}`);
process.exit(1);
}
const outputPath = path.resolve(
process.cwd(),
options.inputPath.replace(/\.md$/i, ".html")
);
const { baseCss, themeCss } = loadThemeCss(options.theme);
const css = normalizeThemeCss(buildCss(baseCss, themeCss));
const markdown = fs.readFileSync(inputPath, "utf-8");
const renderer = initRenderer({});
const { yamlData } = renderer.parseFrontMatterAndContent(markdown);
const { html: baseHtml, readingTime: readingTimeResult } = renderMarkdown(
markdown,
renderer
);
let content = postProcessHtml(baseHtml, readingTimeResult, renderer);
if (!options.keepTitle) {
content = removeFirstHeading(content);
}
const stripQuotes = (s?: string): string | undefined => {
if (!s) return s;
if ((s.startsWith('"') && s.endsWith('"')) || (s.startsWith("'") && s.endsWith("'"))) {
return s.slice(1, -1);
}
if ((s.startsWith('\u201c') && s.endsWith('\u201d')) || (s.startsWith('\u2018') && s.endsWith('\u2019'))) {
return s.slice(1, -1);
}
return s;
};
const meta: HtmlDocumentMeta = {
title: stripQuotes(yamlData.title) || path.basename(outputPath, ".html"),
author: stripQuotes(yamlData.author),
description: stripQuotes(yamlData.description) || stripQuotes(yamlData.summary),
};
const html = buildHtmlDocument(meta, css, content);
const inlinedHtml = normalizeInlineCss(await inlineCss(html));
const finalHtml = modifyHtmlStructure(inlinedHtml);
let backupPath = "";
if (fs.existsSync(outputPath)) {
backupPath = `${outputPath}.bak-${formatTimestamp()}`;
fs.renameSync(outputPath, backupPath);
}
fs.writeFileSync(outputPath, finalHtml, "utf-8");
if (backupPath) {
console.log(`Backup created: ${backupPath}`);
}
console.log(`HTML written: ${outputPath}`);
}
main().catch((error) => {
console.error(error);
process.exit(1);
});