jsonschema-extra

Extends jsonschema validator with some common custom types and attributes

Usage

Installation

npm install jsonschema-extra --save

Example

var jsonschema = require('jsonschema');
var extra = require('jsonschema-extra');
 
var validator = new (jsonschema.Validator)();
extra(validator);
 
// regexp
validator.validate(/abc/, { type: 'regexp' });
 
// error
validator.validate(new Error(), { type: 'error' });
 
// mongodb objectid
validator.validate('123456789012345678901234', { type: 'objectId' });

Attributes

See jsonschema documentation for more detailed documentation on custom attributes.

validate

Custom validator when jsonschema just isn't what you are after. This one is my absolute favourite! It comes in handy whenever you are trying to do something complex.

One of the features of jsonschema is that you can share it across client and server which is exactly what I do! However, if your schema contains a validate attribute it will no longer be valid json. This is not a big issue if you are ok for client side code to not contain all your validation logic if schema is sent from the server.

Single validator

var schema = {
    validate: function(instance, schema, options) {
        // do your crazy validation here
            // return an error string if not valid
        return 'is not a valid instance';
    }
};

Multiple validators

var schema = {
    validate: [
        function(instance, schema, options) {
            // do your crazy validation here
                // return an error string if not valid
            return 'is not a valid instance';
        },
        function(instance, schema, options) {
            // do your crazy validation here
                // return an error string if not valid
            return 'is not a valid instance';
        }
    ]
};

Types

Supported types:

• error (instanceof Error)
• regexp (instanceof RegExp)
• function (Function - also works for Generator Function)
• generatorFunction (ES6 Generator Function)
• objectId (MongoDb objectId)
• plainObject (calls _.isPlainObject)

validator.validate(new Error(), { type: 'error' });
 
validator.validate(/regexp/, { type: 'regexp' });
 
validator.validate(function() {}, { type: 'function' });
 
validator.validate(function *() {}, { type: 'generatorFunction' });
 
validator.validate('123456789012345678901234', { type: 'objectId' });
validator.validate(new ObjectID(), { type: 'objectId' });
 
validator.validate({ a: 'a', b: 'b' }, { type: 'plainObject' });

js-quantities types

Quantity types supported by js-quantities

• qty.acceleration
• qty.activity
• qty.angle
• qty.angular_velocity
• qty.area
• qty.capacitance
• qty.charge
• qty.conductance
• qty.currency
• qty.current
• qty.energy
• qty.force
• qty.frequency
• qty.illuminance
• qty.inductance
• qty.length
• qty.luminous_power
• qty.magnetism
• qty.magnetism
• qty.magnetism
• qty.mass
• qty.mass_concentration
• qty.memory
• qty.molar_concentration
• qty.potential
• qty.power
• qty.pressure
• qty.radiation
• qty.resistance
• qty.speed
• qty.substance
• qty.temperature
• qty.time
• qty.unitless
• qty.viscosity
• qty.viscosity
• qty.volume

validator.validate('1 meter', { type: 'qty.length' });
 
validator.validate('45.3 seconds', { type: 'qty.time' });
 
 
// can also validate Qty instances
var Qty = require('js-quantities');
var qty = Qty.parse('2 meters');
 
validator.validate(qty, { type: 'qty.length' });

Testing

Install mocha globally

$ npm install mocha -g

Run tests

$ npm test

Changelog

v1.2.0 (22 Dec 2014)

• Added quantity types backed by js-quantities

v1.1.1 (19 Dec 2014)

• Minor doc updates

v1.1.0 (18 Sep 2014)

• Allow multiple validators in the validate property

v1.0.2 (30 Sep 2014)

• Fixed so it works on non-Windows systems
• Removed mongodb dev dependency

v1.0.1 (27 Sep 2014)

• Updated docs
• Updated package.json

v1.0.0 (27 Sep 2014)

• Changed public API - jsonschema is no longer a dependency. This lets jsonschema to be updated in userland without this module requiring an update.
• Name of module changed to jsonschema-extra
• Removed conditionalEnum custom attribute since this has been fixed in the latest versions of jsonschema
• Removed speed type