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Since v5 relies on node >= 18, this is now possible (since v16, v14.18.0 [^1][^2]). It's functionally irrelevant: 1. It's not required for CJS nor ESM (with a few exceptions [^3]) 2. It has no performance promises However, there are upsides to this approach: 1. It brings clear boundaries to what's a built-in and what's an external dependency 2. It reduces the risk of importing unwanted deps where a built-in is expected 3. It's slightly more interoperable with other JS runtimes that provide node compatibility[^4], albeit only during development. Once imported from npm, built-ins are assumed. [^1]:https://nodejs.org/docs/latest-v22.x/api/modules.html#built-in-modules [^2]:https://github.com/nodejs/node/pull/37246 [^3]:https://nodejs.org/api/modules.html#built-in-modules-with-mandatory-node-prefix [^4]:https://docs.deno.com/runtime/fundamentals/node/#using-node's-built-in-modules
28 lines
630 B
JavaScript
28 lines
630 B
JavaScript
'use strict'
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var express = require('../')
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var assert = require('node:assert')
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describe('app.listen()', function(){
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it('should wrap with an HTTP server', function(done){
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var app = express();
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var server = app.listen(0, function () {
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server.close(done)
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});
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})
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it('should callback on HTTP server errors', function (done) {
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var app1 = express()
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var app2 = express()
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var server1 = app1.listen(0, function (err) {
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assert(!err)
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app2.listen(server1.address().port, function (err) {
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assert(err.code === 'EADDRINUSE')
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server1.close()
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done()
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})
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})
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})
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})
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