is-type-of

is-type-of

complete type checking for node, extend core-util-is

dependencies:

• core-util-is
• is-stream
• is-class

Install

npm install is-type-of

Example

var is = require('is-type-of');

is.array([1]); // => true
is.primitive(true); // => true
is.primitive({}); // => false
is.generatorFunction(function * () {}); // => true
is.long(Math.pow(2, 33)); // => true
is.double(0); // => false

API

From core-util-is

is.array(arr)

is.boolean(bool)

is.null(null)

is.nullOrUndefined(null)

is.number(num)

is.string(str)

is.symbol(sym)

is.undefined(undef)

is.regExp(reg)

is.object(obj)

is.date(date)

is.error(err)

is.function(fn)

is.primitive(prim)

is.buffer(buf)

from is-stream

is.stream(stream)

is.readableStream(readable)

is.writableStream(writable)

is.duplexStream(duplex)

from is-class

is.class(obj)

Extend API

is.finite(num)

is.NaN(NaN)

is.generator(gen)

is.generatorFunction(fn)

is.promise(fn)

is.int(int)

is.double(double)

is.int32(int)

is.long(long)

is.Long(Long)

• Support Long instance.

License

MIT

Changelog

1.3.0 (2023-05-04)

Features

• add d.ts support (#17) (edcedcc)

---

1.2.1 / 2018-09-22

fixes

• [1468e4e] - fix: hotfix is-class bug (#10) (fengmk2 <[e-mail]>)

others

• [32aab2b] - chore: Improve some functions (#8) (Runrioter Wung <[e-mail]>)

1.2.0 / 2017-08-10

• feat: Add async function test function. (#6)

1.1.0 / 2017-07-19

• deps: upgrade is-class@0.0.4
• feat: is.array() use Array.isArray() directly
• feat: improve is.error performance
• feat: improve is.regExp performance
• test: support coverage
• feat: imrpove is.date performance (#4)

1.0.0 / 2015-11-09

• deps: update all dependencies
• detect class

0.3.1 / 2014-06-20

• add is.finite()

0.3.0 / 2014-05-10

• split Long from long
• fix history

0.2.1 / 2014-04-22

• bump deps version
• Merge pull request #1 from node-modules/support-long-module
• is.long() support long module
• refactor

0.2.0 / 2014-04-07

• add readme for isstream
• add isStream
• add travis-yml

0.1.0 / 2014-04-03

• add isNaN

0.0.2 / 2014-04-01

• add is.int32

0.0.1 / 2014-03-12

• add readme
• add test, add number type checker
• add core-util-is and generator promise
• Initial commit