Syringe

Syringe is a small utility you can use to inject dependencies into functions.

How it works

Syringe works by parsing the function signature to look for variable names.

The module then takes one or more parameters, a function to inject and any number of objects where the keys may match the named parameters required by the injected function.

How to use it

In this example myFunc expects two parameters, arg1 and arg2. The Syringe function receives other parameters, but myFunc will only have access to the ones it asked for.

var inject = require('syringe');

var myFunc = function(arg1, arg2) {
  //...
}

var injected = inject(myFunc, {
  arg1: 'Foo',
  arg2: 'Bar',
  arg3: 'Ponies',
  arg4: {
    pie: 'apple'
  }
});

Contributing

Bug fixes and new features are of course very welcome! To get started developing install Grunt and run the test suite with npm test.

Please accompany any Pull Requests with the relevant test cases and make sure everything else still passes :).

Credits

Shout out to @inf0rmer and @agravem.