unpkg/modules/actions/serveBrowsePage.js

67 lines
2.1 KiB
JavaScript

import { renderToString, renderToStaticMarkup } from 'react-dom/server';
import semver from 'semver';
import BrowseApp from '../client/browse/App.js';
import MainTemplate from '../templates/MainTemplate.js';
import asyncHandler from '../utils/asyncHandler.js';
import getScripts from '../utils/getScripts.js';
import { createElement, createHTML } from '../utils/markup.js';
import { getVersionsAndTags } from '../utils/npm.js';
const doctype = '<!DOCTYPE html>';
const globalURLs =
process.env.NODE_ENV === 'production' || process.env.NODE_ENV === 'staging'
? {
'@emotion/core': '/@emotion/core@10.0.6/dist/core.umd.min.js',
react: '/react@16.8.6/umd/react.production.min.js',
'react-dom': '/react-dom@16.8.6/umd/react-dom.production.min.js'
}
: {
'@emotion/core': '/@emotion/core@10.0.6/dist/core.umd.min.js',
react: '/react@16.8.6/umd/react.development.js',
'react-dom': '/react-dom@16.8.6/umd/react-dom.development.js'
};
function byVersion(a, b) {
return semver.lt(a, b) ? -1 : semver.gt(a, b) ? 1 : 0;
}
async function getAvailableVersions(packageName) {
const versionsAndTags = await getVersionsAndTags(packageName);
return versionsAndTags ? versionsAndTags.versions.sort(byVersion) : [];
}
async function serveBrowsePage(req, res) {
const availableVersions = await getAvailableVersions(req.packageName);
const data = {
packageName: req.packageName,
packageVersion: req.packageVersion,
availableVersions: availableVersions,
filename: req.filename,
target: req.browseTarget
};
const content = createHTML(renderToString(createElement(BrowseApp, data)));
const elements = getScripts('browse', 'iife', globalURLs);
const html =
doctype +
renderToStaticMarkup(
createElement(MainTemplate, {
title: `UNPKG - ${req.packageName}`,
description: `The CDN for ${req.packageName}`,
data,
content,
elements
})
);
res
.set({
'Cache-Control': 'public, max-age=14400', // 4 hours
'Cache-Tag': 'browse'
})
.send(html);
}
export default asyncHandler(serveBrowsePage);