Type Packages

validate request types

Library for managing optionals

Fast runtime type validator, converter and io (encoding/decoding) library

Library for managing results of computation that may fail

JavaScript library that assists with function parameter validation at runtime, through an easy-to-use Fluent API.

Type judgment for javascript

Type check values: `is.string('🦄') //=> true`

Check if a Buffer/Uint8Array is EPUB

All imaginable type checking utils with their negation

Check if stream or buffer is a valid mime-type

Check if a Buffer/Uint8Array is a MP4 video

An expressive type testing library

Returns true if the string corresponds to a valid MIME type.

前端开发中常用的工具方法

A lightweight & fun typing animation built with vanilla JavaScript. Framework agnostic so it works with Vue.js, React, and everything else.

Module for validating types and nested object structures

Scalable class-based JavaScript.

Custom type for js-yaml to include Typescript modules

A lib that effectively safeguards data types, and automatic completion of the required words.

Check if a Buffer/Uint8Array is a EXE file