Node.js - how to get core module source
It is possible to ask node to show its core module source.
For example, we want to check the source of the readFileSunc() method:
$ node
> fs = require('fs');
> fs.writeFileSync('fs.js', fs.toString())
> fs.writeFileSync('fs.readFileSync.js', fs.readFileSync.toString())
[Ctrl-C][Ctrl-C]
Now check the fs.readFileSync.js file in the current folder.
Also on some systems source code of core node modules is in the /usr/lib/nodejs/.
And another (less interesting) way to get core module source - is to look for it in the node github repository:
- check installed node.js version (node –version)
- find appropriate release on github (https://github.com/joyent/node/releases), for example 0.8.17
- click commit id on the left c50c33e
- click “Browse code” and see the source
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