JSPM – assert-kindof@1.0.1

Package Exports

assert-kindof

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (assert-kindof) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Check native type of the given value and throw TypeError if not okey. Expressive, elegant, behavior-driven API, good descriptive default error messages, simple and clean syntax.

Differences

tunnckoCore/is-kindof returns true or false
assert-kindof returns true or throws TypeError

Install

npm i --save assert-kindof
npm test

Features

clean and simple syntax
expressive, behavior-driven api
support custom error messages
support error message formatter function
good descriptive default error messages
guarantee better code coverage
only type-oriented checks
enhanced TypeError object with more useful properties like
- actual, expected, line, filename, filepath, value, message

Supported types

undefined
null
boolean
buffer
number
string
object
date
array
regexp
function
map
weakmap
set
weakset
symbol
error

So is and is.not have method for all of them

Usage

For more use-cases see the tests

var is = require('assert-kindof');

is.object('foo');                     //=> throw TypeError
is.a.object('foo');                   //=> throw TypeError
is.an.object('foo');                  //=> throw TypeError
is.not.a.object({a: 'b'});            //=> throw TypeError
is.not.an.object({a: 'b'});           //=> throw TypeError
is.a.not.object({a: 'b'});            //=> throw TypeError
is.an.not.object({a: 'b'});           //=> throw TypeError

is.kindof.object('foo');              //=> false
is.kindof.array('foo');               //=> false
is.kindof.null(null);                 //=> true
is.kindof.symbol('foo');              //=> false
is.kindof.symbol(Symbol('foo'));      //=> true

notice: that tunnckoCore/is-kindof is exposed as is.kindof

Author

Charlike Mike Reagent

License

Proudly generated by docks(1), March 30, 2015