ECMAScript spec abstract operations.

If IsCallable(callbackfn) is false, throw a TypeError exception.

TypeScript definitions for is-callable

A Set of Utility method for to check isArray,isNumber,isObject,isInteger,isCallable etc

Utility library for javascript type checking.

Some utils things

ES helper functions from ES5 shim with no dependencies

Reflection util

Types

TypeScript will support all proposals above stage-3. But there are always some gap between TypeScript support and proposal progress. And sometimes we want to use proposals within stage-3 (e.g. `Iterator helper`) because we may use polyfill.

A method to determine if an argument is a callable function with a call method

Get V8 function type flags (IsConstructor, IsAsyncFunction, IsGeneratorFunction). Also includes features like getting bind source, Proxy source, function renaming, etc.

A small package containing helper functions to call single or multiple functions

Type check library

Assertion library.

Powerful package to check for variable types, values and others.

get info of objects or set exotic accessors to objects

## TODO - [ ] ECMAScript proposals - [x] Finished proposals - [x] `Array` find from last - [x] Stage 3 proposals - [x] `Array` grouping - [x] Change `Array` by copy - [x] Stage 2 proposals - [x] `Iterator` helpers - [x] New `Set` metho

A lightweight JS utility for advanced type detection, validation, and enforcement.

Assertion test library.