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NodeJS: load multiple bundles from local and remote (http, https)
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| // bundleConfiguration is a javascript object in the following format: | |
| // let bundleConfiguration = { | |
| // default: './server-bundle', | |
| // pwa: './server-bundle', | |
| // pwaremote: 'http://myserver.com/server-bundle.js' | |
| // }; | |
| // bundles is an empty onbject, i.e. let bundles = {}; | |
| // the function returns an array of promises to wait for: | |
| // bundleLoaderPromises = loadBundles(bundlesConfiguration, bundles); | |
| // Promise.all(bundleLoaderPromises).then(() => { | |
| // .... do your thing ... | |
| // }).catch(reason => { | |
| // console.error(reason.message); | |
| // process.exit(1); | |
| // }); | |
| function loadBundles(bundlesConfiguration, bundles) { | |
| const http = require('http'); | |
| const https = require('https'); | |
| let bundleLoaderPromises = []; | |
| for (let bundleName in bundlesConfiguration) { | |
| let bundlePath = bundlesConfiguration[bundleName]; | |
| if (bundlePath.startsWith("http")) { | |
| let client = http; | |
| if (bundlePath.toString().indexOf("https") === 0){ | |
| client = https; | |
| } | |
| const promise = new Promise((resolve, reject) => { | |
| request = client.get(bundlePath, res => { | |
| if (res.statusCode === 200 && res.headers['content-type'].includes('javascript')) { | |
| let rawData = ''; | |
| res.setEncoding('utf8'); | |
| res.on('data', chunk => { rawData += chunk; }); | |
| res.on('end', () => { | |
| var m = new module.constructor(); | |
| m._compile(rawData, bundlePath); | |
| bundles[bundleName] = m.exports; | |
| console.log(`Loaded remote bundle '${bundleName}' from path '${bundlePath}'`); | |
| resolve(); | |
| }); | |
| } else { | |
| reject(new Error(`Failed to load remote bundle '${bundleName}' from path '${bundlePath}' (${res.statusCode};content-type=${res.headers['content-type']})`)); | |
| } | |
| }); | |
| request.on('error', reject); | |
| request.end(); | |
| }); | |
| bundleLoaderPromises.push(promise); | |
| } else { | |
| try { | |
| bundles[bundleName] = require(bundlePath); | |
| console.log(`Loaded local bundle '${bundleName}' from path '${bundlePath}'`); | |
| } catch(error) { | |
| console.error(new Error(`Failed to load local bundle '${bundleName}' from path '${bundlePath}'. Error: ${error.message}`)); | |
| process.exit(1); | |
| } | |
| } | |
| } | |
| return bundleLoaderPromises; | |
| } |
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