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I need to view a dependency tree of some sort, showing the various require()s starting at a particular file. For example, if I have a server.js file like so:
// server.js
var myThing = require('./myThing');
and a myThing.js file like so:
// myThings.js
var mongodb = require('mongodb');
is there a way to see that mongodb is required by server.js without manually traversing through myThing.js ?
I'd love to see a tree something like npm list generates, eg:
alex@alex-pc ~/repos/test $ npm list
[email protected] /home/alex/repos/test
├─┬ [email protected]
│ ├── [email protected]
│ ├─┬ [email protected]
│ │ ├── [email protected]
│ │ ├── [email protected]
│ │ ├─┬ [email protected]
│ │ │ └── [email protected]
│ │ ├─┬ [email protected]
│ │ │ └── [email protected]
│ │ └── [email protected]
│ ├── [email protected]
349
In NodeJS, require() is a built-in function to include external modules that exist in separate files. require() statement basically reads a JavaScript file, executes it, and then proceeds to return the export object.
To get the contents of a file as a string, we can use the readFileSync() or readFile() functions from the native filesystem ( fs ) module in Node. js. /* Get all the contents from a file */ const content = readFileSync("myFile. txt");
The __dirname in a node script returns the path of the folder where the current JavaScript file resides. __filename and __dirname are used to get the filename and directory name of the currently executing file. The ./ gives the current working directory. It works similar to process. cwd() method.
createReadStream('your/file'); var outstream = new stream; var rl = readline. createInterface(instream, outstream); rl. on('line', function(line) { // process line here }); rl. on('close', function() { // do something on finish here });
You can see the dependency tree using madge
103
dependo
It is not sort, but visualize your files
37
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