check-toolkit

A TypeScript utility library for type checking and validation.

Installation

npm install check-toolkit

Usage

import { isString } from "check-toolkit";
import { isNumber } from "check-toolkit";
import { isArray } from "check-toolkit";
// ... import other functions as needed

// Type checking examples
console.log(isString("test")); // true
console.log(isNumber(42)); // true
console.log(isArray([1, 2, 3])); // true
console.log(isObject({})); // true
console.log(isFunction(() => {})); // true

Available Functions

Type Checking

• isSymbol - Check if value is a symbol
• isArray - Check if value is an array
• isArrayLike - Check if value is array-like
• isNan - Check if value is NaN
• isObject - Check if value is an object
• isNull - Check if value is null
• isFunction - Check if value is a function
• isNumber - Check if value is a number
• isString - Check if value is a string
• isUndefined - Check if value is undefined
• isNotUndefined - Check if value is not undefined
• isNil - Check if value is null or undefined
• isNotNil - Check if value is not null and not undefined
• isNotNaN - Check if value is not NaN
• isEmpty - Check if value is empty
• isEqual - Check if two values are equal
• isMatch - Check if object matches source

Array Operations

• difference - Create an array of unique values not included in other arrays
• differenceBy - Like difference but accepts iteratee
• differenceWith - Like difference but accepts comparator
• keyBy - Creates an object composed of keys generated from array

String Operations

• escape - Escapes HTML special characters
• unescape - Unescapes HTML special characters
• escapeRegExp - Escapes RegExp special characters

Function Utilities

• debounce - Creates a debounced function
• throttle - Creates a throttled function

Testing

To run the test suite:

npm run test

To build the project:

npm run build

To start development server:

npm run dev

Documentation

For detailed documentation and examples, please visit our documentation.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT License

Originally created by Volodymyr Cherevchuk