Tower Type

API for defining/sanitizing custom resource attribute types.

Installation

node.js:

$ npm install tower-type

browser:

$ component install tower/type

Example

Define comparators/validators for basic types:

var type = require('tower-type');
 
type('string')
  .validator('gte', function gte(a, b){
    return a.length >= b.length;
  })
  .validator('gt', function gt(a, b){
    return a.length > b.length;
  });

Define a custom type with custom validators:

var now = Date.parse('2013-05-01');
 
type('birthdate')
  .validator('can-drive', function(val){
    return now >= val;
  });
 
var validate = type.validator('birthdate.can-drive');
validate(Date.parse('1950-12-21')); // true

Sanitize values:

type('digits')
  .use(stripWhitespace)
  .use(stripLetters);
 
type('digits').sanitize('  1  foo b2a3r'); // 123
 
function stripWhitespace(val) {
  return val.replace(/\s+/g, '');
}
 
function stripLetters(val) {
  return val.replace(/[a-z]+/g, '');
}

Testing

Install testem:

$ npm install -g testem

Run tests:

$ testem

Then, open all the browsers you want to test by going to the outputted url defaulted to http://localhost:7357

Tests will run on any open browser linked to the stated url and your current Node environment.

Contributing

Before you send a pull request, make sure your code meets the style guidelines at https://github.com/tower/style-guide and all tests pass.

License

MIT