Created
May 13, 2021 19:04
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(([http, fs]) => fs.readdir([__dirname, 'public'].join('/')) | |
.then(names => names.map(name => fs.readFile([__dirname, 'public', name].join('/')) | |
.then(contents => [name, contents]))) | |
.then(promises => Promise.all(promises)) | |
.then(pairs => [new Map(), pairs]) | |
.then(([assets, pairs]) => [assets, pairs.map(pair => assets.set(...pair))].shift()) | |
.then(assets => [ | |
assets, | |
[...assets.keys()] | |
.map(name => | |
console.warn(`${['public', name].join('/')} has been loaded into memory.`)) | |
].shift()) | |
.then(assets => | |
http.createServer( | |
(request, response) => (([response, url]) => | |
(name => | |
(async (dict, key) => | |
new Promise((resolve, reject) => | |
dict.has(key) ? resolve(dict.get(key)) : reject(key)) | |
)(assets, name) | |
.then(data => [name, data]) | |
.catch(k => (x => {throw x})(['404.html', assets.get('404.html')])) | |
)(url == '/' ? 'index.html' : url.substring(1)) | |
.then(([name, data]) => ({ assetName: name, status: 200, reply: data })) | |
.catch(([name, data]) => ({ assetName: name, status: 404, reply: data })) | |
.then(({ assetName, status, reply }) => | |
({ | |
assetName: assetName, | |
status: status, | |
contentType: | |
[...Object.entries({ | |
'application/json': ['json'], | |
'text/html': ['html'], | |
'text/css': ['css'], | |
'application/javascript': ['js'], | |
'image/jpeg': ['jpeg', 'jpg'] | |
}) | |
.filter(([header, extensions]) => extensions.includes(assetName.split('.').pop())) | |
.map(([k, v]) => k) | |
, 'text/plain'].shift(), | |
reply: reply, | |
})) | |
.then(package => [ | |
package, | |
package.contentType == 'text/plain' ? console.warn(`Undefined content type for .${extension}!`) : undefined | |
].shift()) | |
.then(({ assetName, status, contentType, reply }) => [ | |
response.setHeader('Content-Type', contentType), | |
response.writeHead(status), | |
response.end(reply), | |
])) | |
([response, request.url]) | |
).listen( | |
process.env.PORT || 3000, | |
'localhost', | |
() => console.log(`Server is running on http://localhost:${process.env.PORT || 3000}`) | |
)))(['http', 'fs'] | |
.map(name => [name, require(name)]) | |
.map(([name, mod]) => | |
name == 'fs' ? mod.promises : mod)); |
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