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Gathering detailed insights and metrics for is

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Gathering detailed insights and metrics for is

is - 3.3.0 | npmpackage.info

is

The definitive JavaScript type testing library

3.3.0

191

MIT

JavaScript

4.1

Installations

npm install is

Developer Guide

BETA

Typescript

No

Module System

CommonJS

Min. Node Version

*

Node Version

11.4.0

NPM Version

6.4.1 Score

99.7

Supply Chain

100

Quality

78.1

Maintenance

100

Vulnerability

100

License

Pull Requests

Open

0

Total

28

Closed

10

Merged

18

Issues

Open

0

Total

12

Closed

12

Releases

Unable to fetch releases

Languages

JavaScript

Makefile

JavaScript (99.29%)

Makefile (0.71%)

Developer

enricomarino

Download Statistics

Total Downloads

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

MIT License

191 Stars

265 Commits

25 Forks

6 Watchers

1 Branches

9 Contributors

Updated on Apr 20, 2025

Maintainers

View All 9 Contributors

Package Meta Information

Latest Version

3.3.0

Package Id

is@3.3.0

Size

11.70 kB

NPM Version

6.4.1

Node Version

11.4.0

Published on

Dec 14, 2018

Total Downloads

Cumulative downloads

Total Downloads

NaN

Last Day

NaN

Compared to previous day

Last Week

NaN

Compared to previous week

Last Month

NaN

Compared to previous month

Last Year

NaN

Compared to previous year

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

@ljharb/eslint-config covert eslint foreach jscs make-generator-function safe-publish-latest tape

is

The definitive JavaScript type testing library

To be or not to be? This is the library!

Installation

As a node.js module

1$ npm install is

As a component

1$ component install enricomarino/is

API

general

is.a (value, type) or is.type (value, type)
is.defined (value)
is.empty (value)
is.equal (value, other)
is.hosted (value, host)
is.instance (value, constructor)
is.instanceof (value, constructor) - deprecated, because in ES3 browsers, "instanceof" is a reserved word
is.nil (value)
is.null (value) - deprecated, because in ES3 browsers, "null" is a reserved word
is.undef (value)
is.undefined (value) - deprecated, because in ES3 browsers, "undefined" is a reserved word

arguments

is.args (value)
is.arguments (value) - deprecated, because "arguments" is a reserved word
is.args.empty (value)

array

is.array (value)
is.array.empty (value)
is.arraylike (value)

boolean

is.bool (value)
is.boolean (value) - deprecated, because in ES3 browsers, "boolean" is a reserved word
is.false (value) - deprecated, because in ES3 browsers, "false" is a reserved word
is.true (value) - deprecated, because in ES3 browsers, "true" is a reserved word

date

is.date (value)

element

is.element (value)

error

is.error (value)

function

is.fn (value)
is.function (value) - deprecated, because in ES3 browsers, "function" is a reserved word

number

is.number (value)
is.infinite (value)
is.decimal (value)
is.divisibleBy (value, n)
is.integer (value)
is.int (value) - deprecated, because in ES3 browsers, "int" is a reserved word
is.maximum (value, others)
is.minimum (value, others)
is.nan (value)
is.even (value)
is.odd (value)
is.ge (value, other)
is.gt (value, other)
is.le (value, other)
is.lt (value, other)
is.within (value, start, finish)

object

is.object (value)

regexp

is.regexp (value)

string

is.string (value)

encoded binary

is.base64 (value)
is.hex (value)

Symbols

is.symbol (value)

BigInts

is.bigint (value)

Contributors

Jordan Harband

No vulnerabilities found.

10

Binary-Artifacts

Determines if the project has generated executable (binary) artifacts in the source repository.

10

Dangerous-Workflow

Determines if the project's GitHub Action workflows avoid dangerous patterns.

10

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

10

License

Determines if the project has defined a license.

9

Security-Policy

Determines if the project has published a security policy.

1

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

0

Maintained

Determines if the project is "actively maintained".

0

Pinned-Dependencies

Determines if the project has declared and pinned the dependencies of its build process.

0

Token-Permissions

Determines if the project's workflows follow the principle of least privilege.

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Fuzzing

Determines if the project uses fuzzing.

0

Branch-Protection

Determines if the default and release branches are protected with GitHub's branch protection settings.

0

SAST

Determines if the project uses static code analysis.

Score

4.1

/10

Last Scanned on 2025-07-07

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