uvalidaiton

javascript validation library for different runtimes

Features

Imagine such data structure

Or it's another view

const a = {
    b: {
        e: null
    },
    c: {
        f: null,
        g: null,
    },
    d: {
        h: {
            i: null
        }
    },
}

As the author I have had some requirements which this library should cover:

1. Validity of a field can depend on that field own value. E.g:
   1. Validity of b depends on b value
   2. Validity of e depends on e value
2. Validity of a field can depend on any other field value. E.g:
   1. Validity of e depends on i and g values.
3. Each field can have own error messages.
4. Adding validation should not make me crazy.
5. Validation can be Sync/Async
6. Sync/Async validation can be run separately

Pros and cons

So main concern which this library addresses is complexity.

Currently I don't care about perfomance. It even wasn't measured.

Pros:

1. Almost any(?) validation rule can be added.
2. Validators / Relations are very flexible to configuration.
3. Easy to write unit tests.
4. Doesn't have additional dependencies.
5. Can be used in different runtimes - nodejs or browser.
6. Different bundles:

• umd with es5
• commonjs with es6
• esm with es6

Cons:

1. Sophisticated usage.
2. No built-in validators / relations.
3. No built-in functionality to display errors in form (for browser).

Examples

Read the concepts behind

There are multiple drivers:

• Plain
• RxJs TBD