v4.1.0

• #392, #393 - Add .formatWith(formatter) to the validation result API
• #390 - Add .exists() to the TypeScript typings

v4.0.0

🎉 BIGGEST express-validator rewrite ever! 🎉 🎊

...but with backwards compatibility, because we're cool to our users 😉

Most notable features are the introduction of check and filter APIs.
They are additions to express-validator, previous ways to validate your requests are still here, but under the name "legacy APIs".

Check the README for complete docs and the upgrade guide for version 3 users.

• #383, #384, #389 - Implement the check API
• #385, #294 - Add support for negating validators with .not()
• #386, #347 - Add support for selecting request fields using wildcard *
• #387, #200 - Add oneOf function to emulate OR validations
• #388, #168 - Implement the filter API
• New .exists() validator
• Upgrade to validator v8.1.0

v3.2.1

• Add deprecation warnings to req.validationErrors() and req.asyncValidationErrors()
• Add support for Node 8
• #354 - Don't throw error when validator returns null/undefined
• #318, #348, #350, #352 - Fix lots of problems in TypeScript typings!
• #366 - Tests rewritten as unit tests ⚠️ (should make contributors' lives' easier!)

v3.2.0

• #337 - Don't share state between multiple instances of express-validator middleware

v3.1.3

• #310 - Allow to use fully custom error formatter without TypeScript error

v3.1.2

• #300 - customValidators should accept variable number of arguments in TypeScript Definition

v3.1.1

• #293 - Move type definition dependencies back to dependencies from devDependencies

v3.1.0

Official TypeScript support!

• #288, #290 - Support schema validation in req.checkHeaders()
• #289 - Add TypeScript definitions
• Update validator to ~6.2.0

v3.0.0

First major version in a long time! 🎉 🚢

• #268 - Use Express 4 code in examples
• #270, #274 - Update validator to ~6.1.0
• #232 - Support cookies via req.checkCookies() and req.sanitizeCookies()
• #278 - Make headers validation and sanitization case insensitive
• #222, #262, #282 - Check if validation is optional in schema validation to guard against object keys iteration order
• #280 - Improve IDE auto completion for req.checkQuery(), req.checkParams() and req.checkBody()
• #30, #223, #235, #269, #285 - Implement result API via new async method req.getValidationResult()
• #269 - Deprecate methods req.validationErrors() and req.asyncValidationErrors()

v2.21.0

• #191 - Don't require options in schema validation to be an array
• Add support for Node.js v6