Brings validation support to mobx-state-tree powered by validate.js.

• mobx-state-tree 2.x or 3.x
• validate.js >= 0.11

yarn add mst-validatejs

This library offers a withValidations extension that you can use to extend your models giving it 3 new views:

• .errors
• .isValid
• .isInvalid

Using the .extend function on an mst model, you can add your validations in there. Check out the test directory here for a bigger example using credit cards.

import { types } from "mobx-state-tree"
import { withValidations } from "mst-validatejs"

export const UserModel = types
  .model("User")
  .props({
    name: "",
    age: 69,
  })
  .extend(
    // here we go!
    withValidations({
      name: {
        length: { minimum: 1, message: "name is required" },
      },
      age: {
        numericality: {
          onlyInteger: true,
          greaterThanOrEqualTo: 0,
          lessThan: 110,
          message: "liar",
        },
      },
    }),
  )

Find more about validate.js, it's a pretty great library.

Yes plz!

Fork it, Clone it, Branch it, Yarn it
Build it, Test it, Push it, PR it

To run the tests, I like to open two shells yarn test:compile:watch and yarn ava --watch.