Validation made easy

Easy create body validations using Validator.lang!

This package is still in development, so it may have some bugs.

Usage

import { SimpleValidator } from 'validatorlang'

const validator = new SimpleValidator(`
	Validator {
		string name @minLength(5) @maxLength(20)
		number age @optional
		bool isAdult
		Adress adress
	}

	Address {
		string state
		string city
		string street
		number number
	}
`).build();

const result = validator.validate({
	name: 'John',
	age: 20,
	isAdult: true
});

if (result !== true) throw result;

Planned features

• [ ] Add more annotations and types
• [x] Add array support
• [ ] Finish Advanced validator
• [ ] Add support for enums
• [ ] Add support for building validators from a directory
• [ ] Add types for typescript for builded validators
• [ ] Add support for maps / dictionaries
• [ ] Better error handling for ParseErrors
• [ ] Macros (ex: macro string Username @minLength(3) @maxLength(20) @pattern(/^[a-z0-9_]+$/i))

Types

string

Checks if the value is a string.

Annotations:

@minLength(int size) - Minimum length of the string
@maxLength(int size) - Maximum length of the string
@pattern(Regex regex) - Checks if the string matches the regex
@containsLowercase - Checks if the string contains a lowercase letter
@containsUppercase - Checks if the string contains a uppercase letter
@containsNumber - Checks if the string contains a number
@containsSpecial - Checks if the string contains a special character

number

Checks if the value is a number.

Annotations:

@min(int size) - Minimum value of the number
@max(int size) - Maximum value of the number
@integer - Checks if the number is an integer
@notNan - checks if the number is not NaN
@positive - Checks if the number is positive
@negative - Checks if the number is negative

bool

Checks if the value is a boolean.

object

Checks if the value is an object.

Array

Checks if the value is an Array.

Annotations:

@minLength(int size) - Minimum length of the array
@maxLength(int size) - Maximum length of the array
@item:(annotation) - Checks the annotation on the array items, this is specific per type
-- Example: @item:@minLength(5)

Global Annotations

@optional - Makes the type optional (has no default implementation, must be handled by the Type)
@custom(string name) - Adds a custom validator, can be added using Validator#addValidator

License

MIT License

Copyright (c) 2022 JeroenoBoy

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.