validate-params

A small parameter validation library The purpose of this library is to easily check that the contract of your functions are not violated; and if they are, to allow you to gracefully handle the situation (provide useful error messages). !Build Statustravis-imagetravis-url !Coveralls Statuscoveralls-imagecoveralls-url !Code Climatecc-imagecc-url ```js var Validator = require('validate-params'); // validating a single argument function simpleWrapper(callback){

Validator.assert.arg(callback, 'function');

//Then do something with the callback later

//At this point we can be sure that callback is a function

} simpleWrapper(42); //throws Error('Expected type "function" but it was type "number"') // validating an argument object function myCoolFunction(opts){

Validator.assert.arg(opts,

{name: 'string',

//handles optional parameters

phoneNum: {

type: 'string',

optional: true

},

//handles nested objects

location: {

city: 'string',

longitude: 'number',

latitude: 'number'

}

});

//...

} myCoolFunction({name: 'Jenny',

phoneNum: '876-5309',

location: {

city: 'Chicago',

longitude: 87.6847,

latitude: 41.8369

}

});

``` To learn more checkout the documentation page (docs/index.md) MIT - view the full license here (LICENSE)