Validator Middleware

I have an idea, “Validator Middleware”.

I plan that I’ll make it with validator.js, which is used in express-validator. So, it will depend on the external library, which will be a “third-party” middleware.

The express middleware is helpful, but it’s a bit fat, and it seems not too easy to implement. And “just do porting” is not like Hono. I want to make the “Validator Middleware” simpler than the express middleware. Below is the synopsis that on my head now:

const app = new Hono()

app.use(
  '/',
  validator((v) => [
    {
      rule: v.isAlpha,
      field: 'query',
      name: 'q',
    },
  ])
)

app.get('/', (c) => {
  const res = validatorResult(c)
  return c.json(res)
})

export default app

I’ll try to build it on github.com/honojs/validator repository. So if it’s ready, please take a look!

[digitalmio]

Hey, AJV might be a good option, I would also check what library Fastify is using. I’m going on holiday soon, will be able to take a look into this in about week and a bit.

[yusukebe]

Hi there! especially @metrue and @usualoma .

I’m creating “Validator Middleware” and almost done:

https://github.com/honojs/validator/tree/develop

This is what I consider to be the Ideal API. I would like to go with this, but if you must have an opinion, please let me know.