@preplabs/validator

A lightweight, TypeScript-first validation library focused on common backend validation.

Features

• 🚀 Lightweight
• ⚡ Zero runtime dependencies
• 🔒 TypeScript-first
• 📦 ESM support
• ✅ Fluent API
• 🧩 Built-in validators
• 🔍 Regex search utilities

Installation

npm install @preplabs/validator

Basic Usage

import { string, number } from "@preplabs/validator";

string()
    .min(3)
    .max(20)
    .check("Prey");

number()
    .positive()
    .integer()
    .check(25);

Username Validation

import { string } from "@preplabs/validator";

string().user("Prey123");

Password Validation

string().psw("MyPassword123!");

Safe Validation

const result = string()
    .min(5)
    .safeCheck("abc");

if (!result.ok) {
    console.log(result.error);
}

Number Validation

number()
    .positive()
    .max(100)
    .check(25);

Array Validation

array()
    .nonEmpty()
    .min(2)
    .check(["A", "B"]);

Object Validation

object().check({
    username: "Prey"
});

Regex Utilities

import { search } from "@preplabs/validator";

const regex = search()
    .ignoreCase()
    .startsWith("Pre");

Roadmap

• [x] String Validator
• [x] Number Validator
• [x] Boolean Validator
• [x] Array Validator
• [x] Object Validator
• [x] Date Validator
• [x] Search Utilities
• [ ] Schema Validation
• [ ] Nested Objects
• [ ] Async Validation

License

MIT © PreyLabs