dependency-resolver

If you have a dependency tree, and you'd like to know in which order to initialize each node, this library is for you.

How to use

Node

In CLI, execute

npm i dependency-tree-resolver --save-dev

and then

var DepResolver =  require('dependency-tree-resolver');

Browser

Get a local copy of dep-res.js, or consume it via RawGit's CDN, and add to your HTML:

<script type="text/javascript" src="dep-res.js"></script>

and then you'll have DepResolver on the window scope.

API

Once you include the script in your project you'll have a function DepResolver which accepts two arguments:

DepResolver(
    tree = {
        string: [...string],
        ...
    }, 
    options = {
        exclude: [...string]
    }
)

Arguments

• tree: each key in the map represents a node in the tree, and each value in the array represents a single dependency of that node.
• options:
  • exclude: allows you to specify which dependencies are special and allowed to not have a node for themselves (usefull when depending on external resources)

Examples

//valid tree
var tree = {a: [], b: ['c', 'd'], c: ['d'], d: ['a']};
var resolved = DepResolver(tree);
console.log(resolved);//['a','d','c','b' ]

//invalid tree w/ excluded external resource
var tree = {a: ['b'], b: ['d']};
var options = {exclude: ['d']};
var resolved = DepResolver(tree, options);
console.log(resolved);//['b','a']

//invalid tree w/o excluded external resource
var tree = {a: ['b'], b: ['d']};
var resolved = DepResolver(tree);//throw error: "b" has an unknown dependency "d"

//invalid tree with cyclic dependency
var tree = {a: ['b'], b: ['c'], c: ['a'], d: ['e'], e: ['d']};
var resolved = DepResolver(tree);//throw error: circular dependency found: a > b > c > a

License

This library is provided under the MIT license.