parcel-bundler
Version:
Blazing fast, zero configuration web application bundler
161 lines (128 loc) • 4.73 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));
const http = require('http');
const https = require('https');
const serveStatic = require('serve-static');
const getPort = require('get-port');
const serverErrors = require('./utils/customErrors').serverErrors;
const generateCertificate = require('./utils/generateCertificate');
const getCertificate = require('./utils/getCertificate');
const prettyError = require('./utils/prettyError');
const AnsiToHtml = require('ansi-to-html');
const logger = require('./Logger');
const path = require('path');
const url = require('url');
const ansiToHtml = new AnsiToHtml({
newline: true
});
serveStatic.mime.define({
'application/wasm': ['wasm']
});
function setHeaders(res) {
enableCors(res);
}
function enableCors(res) {
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader('Access-Control-Allow-Methods', 'GET, HEAD, PUT, PATCH, POST, DELETE');
res.setHeader('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept, Content-Type');
}
function middleware(bundler) {
const serve = serveStatic(bundler.options.outDir, {
index: false,
redirect: false,
setHeaders: setHeaders
});
return function (req, res, next) {
// Wait for the bundler to finish bundling if needed
if (bundler.pending) {
bundler.once('bundled', respond);
} else {
respond();
}
function respond() {
let _url$parse = url.parse(req.url),
pathname = _url$parse.pathname;
if (bundler.error) {
return send500(bundler.error);
} else if (!pathname.startsWith(bundler.options.publicURL) || path.extname(pathname) === '') {
// If the URL doesn't start with the public path, or the URL doesn't
// have a file extension, send the main HTML bundle.
return sendIndex();
} else {
// Otherwise, serve the file from the dist folder
req.url = pathname.slice(bundler.options.publicURL.length);
return serve(req, res, send404);
}
}
function sendIndex() {
// If the main asset is an HTML file, serve it
if (bundler.mainBundle.type === 'html') {
req.url = `/${path.basename(bundler.mainBundle.name)}`;
serve(req, res, send404);
} else {
send404();
}
}
function send500(error) {
res.setHeader('Content-Type', 'text/html; charset=utf-8');
res.writeHead(500);
let errorMesssge = '<h1>🚨 Build Error</h1>';
if (process.env.NODE_ENV === 'production') {
errorMesssge += '<p><b>Check the console for details.</b></p>';
} else {
const _prettyError = prettyError(error, {
color: true
}),
message = _prettyError.message,
stack = _prettyError.stack;
errorMesssge += `<p><b>${message}</b></p>`;
if (stack) {
errorMesssge += `<div style="background: black; padding: 1rem;">${ansiToHtml.toHtml(stack)}</div>`;
}
}
res.end([`<!doctype html>`, `<head><title>🚨 Build Error</title></head>`, `<body style="font-family: monospace; white-space: pre;">${errorMesssge}</body>`].join(''));
}
function send404() {
if (next) {
return next();
}
res.writeHead(404);
res.end();
}
};
}
function serve(_x, _x2) {
return _serve.apply(this, arguments);
}
function _serve() {
_serve = (0, _asyncToGenerator2.default)(function* (bundler, port, useHTTPS = false) {
let handler = middleware(bundler);
let server;
if (!useHTTPS) {
server = http.createServer(handler);
} else if (typeof useHTTPS === 'boolean') {
server = https.createServer(generateCertificate(bundler.options), handler);
} else {
server = https.createServer((yield getCertificate(useHTTPS)), handler);
}
let freePort = yield getPort({
port
});
server.listen(freePort);
return new Promise((resolve, reject) => {
server.on('error', err => {
logger.error(new Error(serverErrors(err, server.address().port)));
reject(err);
});
server.once('listening', () => {
let addon = server.address().port !== port ? `- ${logger.chalk.yellow(`configured port ${port} could not be used.`)}` : '';
logger.persistent(`Server running at ${logger.chalk.cyan(`${useHTTPS ? 'https' : 'http'}://localhost:${server.address().port}`)} ${addon}`);
resolve(server);
});
});
});
return _serve.apply(this, arguments);
}
exports.middleware = middleware;
exports.serve = serve;