added a way to bundle the whole app

This commit is contained in:
Stefan Stefanov 2026-06-05 21:26:24 +03:00
parent 872d29f3e1
commit 249c88da83
5 changed files with 119 additions and 116 deletions

208
server.js
View file

@ -7,7 +7,9 @@ import { fileURLToPath } from 'url';
import { parsePatchFiles, DEFAULT_THEMES } from '@pierre/diffs';
import { preloadFileDiff } from '@pierre/diffs/ssr';
const __dirname = dirname(fileURLToPath(import.meta.url));
const __dirname = typeof __filename !== 'undefined'
? dirname(__filename)
: dirname(fileURLToPath(import.meta.url));
// --- arg parsing ---
@ -86,76 +88,75 @@ if (files.length === 0) {
process.exit(0);
}
// --- SSR diffs ---
// --- SSR diffs + helpers + mode dispatch ---
const ssrOptions = {
theme: DEFAULT_THEMES,
themeType: 'system',
diffStyle: 'unified',
useTokenTransformer: true,
};
(async () => {
const ssrOptions = {
theme: DEFAULT_THEMES,
themeType: 'system',
diffStyle: 'unified',
useTokenTransformer: true,
};
const renderedFiles = [];
for (const fileDiff of files) {
try {
const result = await preloadFileDiff({ fileDiff, options: ssrOptions });
renderedFiles.push({
name: fileDiff.name || 'unknown',
prerenderedHTML: result.prerenderedHTML,
});
} catch (err) {
console.warn(`Failed to SSR-render ${fileDiff.name || 'unknown'}: ${err.message}`);
renderedFiles.push({
name: fileDiff.name || 'unknown',
prerenderedHTML: null,
});
const renderedFiles = [];
for (const fileDiff of files) {
try {
const result = await preloadFileDiff({ fileDiff, options: ssrOptions });
renderedFiles.push({
name: fileDiff.name || 'unknown',
prerenderedHTML: result.prerenderedHTML,
});
} catch (err) {
console.warn(`Failed to SSR-render ${fileDiff.name || 'unknown'}: ${err.message}`);
renderedFiles.push({
name: fileDiff.name || 'unknown',
prerenderedHTML: null,
});
}
}
}
// --- helpers ---
const finalPatch = patch;
function escapeHtml(str) {
return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
}
function escapeHtml(str) {
return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
}
function fileId(name) {
return 'DF-' + name.replace(/[^a-zA-Z0-9_-]/g, '_');
}
function fileId(name) {
return 'DF-' + name.replace(/[^a-zA-Z0-9_-]/g, '_');
}
// --- HTML template ---
function pageHtml(opts) {
const { mode, sidebarHtml, extraScript } = opts;
function pageHtml(opts) {
const { mode, sidebarHtml, extraScript } = opts;
const fileSections = renderedFiles.map((f) => {
const escapedName = escapeHtml(f.name);
const id = fileId(f.name);
if (f.prerenderedHTML !== null) {
return `
const fileSections = renderedFiles.map((f) => {
const escapedName = escapeHtml(f.name);
const id = fileId(f.name);
if (f.prerenderedHTML !== null) {
return `
<div class="diff-file" id="${id}">
<div class="diff-file-header">${escapedName}</div>
<diffs-container>
<template shadowrootmode="open">${f.prerenderedHTML}</template>
</diffs-container>
</div>`;
}
return `
}
return `
<div class="diff-file" id="${id}">
<div class="diff-file-header">${escapedName}</div>
<div class="diff-fallback"><a href="/patch">View raw patch</a></div>
</div>`;
}).join('\n');
}).join('\n');
const hasLocal = stagedDiff || unstagedDiff || untrackedPatch;
const subtitle = hasLocal
? `${escapeHtml(mainBranch)} \u2192 ${escapeHtml(featureBranch)} (includes local changes)`
: `${escapeHtml(mainBranch)} \u2192 ${escapeHtml(featureBranch)}`;
const title = `Diff: ${escapeHtml(mainBranch)} \u2192 ${escapeHtml(featureBranch)}`;
const rawLink = mode === 'server'
? '<a class="raw-link" href="/patch">View raw patch \u2192</a>'
: '';
const hasLocal = stagedDiff || unstagedDiff || untrackedPatch;
const subtitle = hasLocal
? `${escapeHtml(mainBranch)} \u2192 ${escapeHtml(featureBranch)} (includes local changes)`
: `${escapeHtml(mainBranch)} \u2192 ${escapeHtml(featureBranch)}`;
const title = `Diff: ${escapeHtml(mainBranch)} \u2192 ${escapeHtml(featureBranch)}`;
const rawLink = mode === 'server'
? '<a class="raw-link" href="/patch">View raw patch \u2192</a>'
: '';
return `<!DOCTYPE html>
return `<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
@ -262,21 +263,19 @@ function pageHtml(opts) {
${extraScript}
</body>
</html>`;
}
}
// --- static HTML generation (shared by --static and --out) ---
function buildStaticHtml() {
const sidebarHtml = `
function buildStaticHtml() {
const sidebarHtml = `
<div class="sidebar">
<div class="file-list">
${renderedFiles.map(f => ` <a class="file-item" href="#${fileId(f.name)}">${escapeHtml(f.name)}</a>`).join('\n')}
</div>
</div>`;
const escapedPatch = escapeHtml(patch);
const escapedPatch = escapeHtml(finalPatch);
const extraScript = ` <script>
const extraScript = ` <script>
document.querySelectorAll('.file-item').forEach(el => {
el.addEventListener('click', () => {
const id = el.getAttribute('href').slice(1);
@ -293,64 +292,61 @@ ${renderedFiles.map(f => ` <a class="file-item" href="#${fileId(f.name)
});
</script>`;
return pageHtml({ mode: 'static', sidebarHtml, extraScript })
.replace('</body>', ` <details style="padding:0 24px 16px">
return pageHtml({ mode: 'static', sidebarHtml, extraScript })
.replace('</body>', ` <details style="padding:0 24px 16px">
<summary id="patch-toggle" style="cursor:pointer;font-size:0.8125rem;color:#2563eb">View raw patch</summary>
<pre id="patch-content" class="raw-patch">${escapedPatch}</pre>
</details>\n</body>`);
}
// --- mode dispatch ---
if (outFile) {
// -- out mode: write HTML to specified path, exit --
const html = buildStaticHtml();
writeFileSync(outFile, html, 'utf-8');
console.log(`Written to ${outFile}`);
process.exit(0);
}
if (isStatic) {
// -- static mode: generate self-contained HTML file, open in browser, exit --
const html = buildStaticHtml();
const tmpFile = join(tmpdir(), `difftool-${Date.now()}.html`);
writeFileSync(tmpFile, html, 'utf-8');
const openCmd = process.platform === 'darwin' ? 'open'
: process.platform === 'win32' ? 'start'
: 'xdg-open';
console.log(`Opening ${tmpFile}`);
try {
spawn(openCmd, [tmpFile], { detached: true, stdio: 'ignore' }).unref();
} catch {
console.log(`HTML file saved to ${tmpFile}`);
}
} else {
// -- server mode: start Express --
const app = express();
app.use(express.static(join(__dirname, 'public')));
// --- mode dispatch ---
app.get('/patch', (req, res) => {
res.type('text/plain').send(patch);
});
if (outFile) {
const html = buildStaticHtml();
writeFileSync(outFile, html, 'utf-8');
console.log(`Written to ${outFile}`);
process.exit(0);
}
app.get('/', (req, res) => {
const fileDataJson = JSON.stringify(renderedFiles.map(f => ({ name: f.name })))
.replace(/<\/script>/gi, '<\\/script>');
if (isStatic) {
const html = buildStaticHtml();
const tmpFile = join(tmpdir(), `difftool-${Date.now()}.html`);
writeFileSync(tmpFile, html, 'utf-8');
const sidebarHtml = '<div class="sidebar"><div id="file-tree"></div></div>';
const openCmd = process.platform === 'darwin' ? 'open'
: process.platform === 'win32' ? 'start'
: 'xdg-open';
console.log(`Opening ${tmpFile}`);
try {
spawn(openCmd, [tmpFile], { detached: true, stdio: 'ignore' }).unref();
} catch {
console.log(`HTML file saved to ${tmpFile}`);
}
} else {
const app = express();
app.use(express.static(join(__dirname, 'public')));
const extraScript = `
app.get('/patch', (req, res) => {
res.type('text/plain').send(finalPatch);
});
app.get('/', (req, res) => {
const fileDataJson = JSON.stringify(renderedFiles.map(f => ({ name: f.name })))
.replace(/<\/script>/gi, '<\\/script>');
const sidebarHtml = '<div class="sidebar"><div id="file-tree"></div></div>';
const extraScript = `
<script id="diff-files-data" type="application/json">${fileDataJson}</script>
<script type="module" src="/client.js"></script>`;
const html = pageHtml({ mode: 'server', sidebarHtml, extraScript });
res.type('html').send(html);
});
const html = pageHtml({ mode: 'server', sidebarHtml, extraScript });
res.type('html').send(html);
});
app.listen(port, () => {
console.log(`Difftool running at http://localhost:${port}`);
console.log(`Patch endpoint: http://localhost:${port}/patch`);
});
}
app.listen(port, () => {
console.log(`Difftool running at http://localhost:${port}`);
console.log(`Patch endpoint: http://localhost:${port}/patch`);
});
}
})();