ajv - Another JSON schema Validator

TODO

• remote refs
• custom formats (via options)
• schema validation before compilation
• bundle compiled templates (doT will be dev dependency)

Install

npm install ajv

Usage

var ajv = require('ajv')(options);
var validate = ajv.compile(schema);
var valid = validate(data);
if (!valid) console.log(validate.errors);

or

// ...
var valid = ajv.validate(schema, data);
// ...

ajv compiles schemas to functions and caches them in both cases (using stringified schema as a key - using json-stable-stringify), so that the next time the same schema is used (not necessarily the same object instance) it won't be compiled again.

Options

• allErrors: if true, ajv checks all rules collecting all errors, otherwise it will return after the first error (false by default)
• verbose: include the reference to the validated data in the errors (false by default)
• format: if false, the formats won't be validated (true by default)
• uniqueItems: if false, uniqueItems keyword will be ignored (true by default, i.e. uniqueItems is checked)
• unicode: if false, sting.length will be used and the string lengths with unicode pairs will be "incorrect" because each unicode pair will be counted as two characters (true by default - string lengths are calculated correctly but it is slower)