universal-types-validator/README.md

Simple data type validator

# types-validator

A lightweight and reusable **JavaScript data type validator** for both frontend and backend.  
Supports **strings, numbers, booleans, arrays, objects, emails, URLs, UUIDs, dates**, and schema validation.

---

## Installation

```bash
# For npm
npm install types-validator

# For yarn
yarn add types-validator


# types-validator

A lightweight and reusable **JavaScript data type validator** for both frontend and backend.  
Supports **strings, numbers, booleans, arrays, objects, emails, URLs, UUIDs, dates**, and schema validation.

---

## Installation

```bash
# For npm
npm install types-validator

# For yarn
yarn add types-validator

Usage
ESM (Frontend / Modern Node.js)
import Validator from 'types-validator';

console.log(Validator.isString("hello"));   // true
console.log(Validator.isEmail("test@mail.com")); // true

// Generic validation
console.log(Validator.validate(123, "number")); // true

// Schema validation
const user = { name: "Alice", age: 25, email: "alice@mail.com" };
const result = Validator.validateSchema(user, {
  name: "string",
  age: "number",
  email: "email"
});
console.log(result); // { valid: true }


CJS (Node.js)
const Validator = require('types-validator');

console.log(Validator.isNumber(42)); // true
console.log(Validator.isUrl("https://example.com")); // true

API
Type Checks
Validator.isString(value)
Validator.isNumber(value)
Validator.isBoolean(value)
Validator.isArray(value)
Validator.isObject(value)
Validator.isFunction(value)
Validator.isNull(value)
Validator.isUndefined(value)
Validator.isEmail(value)
Validator.isUrl(value)
Validator.isUUID(value)
Validator.isDate(value)
Validator.isEmpty(value)

Generic Validation
Validator.validate(value, type)
// type can be: 'string', 'number', 'boolean', 'array', 'object', 'email', 'url', 'uuid', 'date', etc.


Schema Validation
Validator.validateSchema(obj, schema)
// obj: your object
// schema: { keyName: "type", ... }

const result = Validator.validateSchema(
  { name: "Alice", age: 25 },
  { name: "string", age: "number" }
);

console.log(result);
// { valid: true } or { valid: false, errors: [...] }




Notes

Works in both frontend and backend.

Fully ESM-compatible, with a CJS wrapper for Node.js require.

Tree-shakeable in modern bundlers.


License
MIT


---

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Do you want me to do that?