Smart Validation

A robust and flexible validation library for JavaScript and TypeScript, providing built-in support for various data types, custom validation rules, and error handling.

Usage

Import the Library

import { isValid, ValidationType } from "smart-validation";

Basic Validation

const rules = {
	minLength: 3,
	maxLength: 10,
	allowEmpty: false,
};

const result = isValid("Hello", ValidationType.STRING, rules);

if (result.isValid) {
	console.log("Validation passed!");
} else {
	console.log("Validation failed:", result.errors);
}

API Reference

isValid(value: any, type: ValidationType, rules: ValidationRules): ValidationResult

Parameters:

1. value: The value to be validated.
2. type: The expected data type. Must be one of the ValidationType enum values.
3. rules:(Optional) An object defining validation rules and custom error messages.

Returns:

• An object with:
  • isValid: Boolean indicating if validation passed.
  • errors: Array of error messages if validation failed.

Validation Rules

| Rule | Type | Description | | ------------------ | --------------- | --------------------------------------------------------------- | | allowEmpty | boolean | Whether empty values are allowed (default: true). | | minLength | number | Minimum length for strings or arrays. | | maxLength | number | Maximum length for strings or arrays. | | minValue | number/bigint | Minimum value for numbers or bigints. | | maxValue | number/bigint | Maximum value for numbers or bigints. | | regexPattern | RegExp | Regex pattern to match strings. | | allowedValues | any[] | Array of valid values. | | prohibitedValues | any[] | Array of invalid values. | | requiredFields | string[] | List of required fields for objects. | | customValidator | function | A custom validation function that returns true or false. | | customErrors | object | Custom error messages for specific validation keys. |