60 lines
2.1 KiB
Text
60 lines
2.1 KiB
Text
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### External dependencies
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The dyna3 program depends on some externally-maintained JavaScript
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libraries/modules. The package uses npm to track these external dependencies.
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A module externals.js is automatically generated from the package_lock.json file
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created by npm to load the necessary modules at runtime.
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The generation is performed by pkglock_to_externals.litcoffee, which also
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records the main importable file within the library, as there does not seem
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to be a systematic way to generate that filename from the module name.
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```javascript
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importable = { three: 'build/three.module.js' }
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```
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Currently, dyna3 makes use of the following external libraries:
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```javascript
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if process.argv.length < 3
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header =
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"""
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/* External module loader for dyna3
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* Generated automatically from package-lock.json by
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* helpers/pkglock_to_externals.litcoffee
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*/
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"""
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process.stdout.write header
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fs = require 'fs'
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pl = fs.readFileSync 'package-lock.json'
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pdata = JSON.parse pl
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for dep in Object.keys pdata.dependencies
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if process.argv.length > 2
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process.stdout.write "* #{dep}\n"
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else
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block =
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"""
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export var #{dep};
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export var #{dep}Loaded = new Promise(async function(resolve, reject) {
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var success = false;
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try {
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#{dep} = await import('https://cdn.jsdelivr.net/npm/#{dep}@#{pdata.dependencies[dep].version}/#{importable[dep]}');
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console.log('CDN import of #{dep} module OK');
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success = true;
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} catch(err) {
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try {
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#{dep} = await import('./node_modules/#{dep}/#{importable[dep]}');
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success = true;
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} catch(err) {
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}
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console.log('Used local fallback for #{dep} module');
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}
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if (success) { resolve(); } else { reject(); }
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});
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"""
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process.stdout.write block
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```
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