jet-validators: TypeScript Validation Made Easy 🧑✈️

jet-validators is a comprehensive collection of TypeScript validator functions and utilities designed to simplify your data validation tasks. This library lightens your coding load by offering a plethora of pre-defined validator functions tailored to meet a wide range of real-world scenarios you’re likely to encounter.

Key Features

• Instant Use: Basic validators can be imported and utilized directly without any configuration, allowing you to write clean and efficient TypeScript code.
• Flexibility with Environment Variables: Overwrite your regular expressions through environment variables to tailor validations to your needs.
• Zero Dependencies: Utilize lightweight validation without the overhead of additional libraries.
• Utility Functions: Enhance your validation process with complementary utilities for value modification and schema validation.

Quick Usage Example

Effortlessly validate your data with jet-validators:

import { isOptionalString, isBooleanArray } from 'jet-validators';

if (isOptionalString(val)) {  
    // val is string | undefined  
}

if (isBooleanArray(val)) {  
    // val is boolean[]  
}

Comprehensive Validator Functions

Basic Validators: Take advantage of a straightforward list of validators including, but not limited to:

• Nullables: isNull, isUndefined, isNullOrUndefined
• Booleans: isBoolean, isBooleanArray, isValidBoolean
• Numbers: isNumber, isBigInt, isValidNumber
• Strings: isString, isNonEmptyString, isAlphaNumericString
• Objects: isObject, isRecord, isFunction

Regular Expressions: Validate strings against patterns by using functions like isEmail, isUrl, and isColor with the ability to modify pattern definitions using environment variables.

Complex Validators: Tailored validators for specific needs, such as checking if a value exists in an array with isInArray, or validating value ranges with isInRange.

Utilities for Enhanced Validation

Leverage utilities to modify values before validation or for validating object schemas:

• Simple Utilities: Functions like nonNullable, iterateObjectEntries, and transform.
• Object Validation: Use parseObject and testObject for validating schemas with the ability to handle observed errors seamlessly.

Conclusion

jet-validators is not a replacement for complex schema validation libraries such as zod or ajv but rather a practical tool to streamline data validation within your TypeScript applications. Whether you need fundamental validation functions or utilities for object schema checks, jet-validators has you covered!