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Gathering detailed insights and metrics for is-data-descriptor

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Gathering detailed insights and metrics for is-data-descriptor

is-data-descriptor - 2.1.3 | npmpackage.info

is-data-descriptor

Returns true if a value has the characteristics of a valid JavaScript data descriptor.

2.1.3

MIT

JavaScript

25.79 kB

4.4

Installations

npm install is-data-descriptor

Developer Guide

BETA

Typescript

No

Module System

CommonJS, ESM

Min. Node Version

>= 0.4

Node Version

21.0.0

NPM Version

10.2.0 Pull Requests

Open

0

Total

4

Closed

1

Merged

3

Issues

Open

0

Total

1

Closed

1

Releases

Unable to fetch releases

Languages

JavaScript

JavaScript (100%)

Developer

inspect-js

Download Statistics

Total Downloads

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

MIT License

21 Stars

79 Commits

6 Forks

4 Watchers

3 Branches

5 Contributors

Updated on Feb 10, 2025

Maintainers

View All 5 Contributors

Package Meta Information

Latest Version

2.1.3

Package Id

is-data-descriptor@2.1.3

Unpacked Size

25.79 kB

Size

7.56 kB

File Count

NPM Version

10.2.0

Node Version

21.0.0

Published on

Oct 27, 2023

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

Dependencies

gopd hasown

Dev Dependencies

@ljharb/eslint-config aud auto-changelog eslint evalmd in-publish npmignore nyc safe-publish-latest tape

is-data-descriptor

Returns true if a value has the characteristics of a valid JavaScript data descriptor.

Examples

true when the descriptor has valid properties with valid values. false when not an object or when the object has invalid properties.

1var isDataDesc = require('is-data-descriptor');
2var assert = require('assert');
3
4assert.equal(true, isDataDesc({ value: 'foo' }));
5assert.equal(true, isDataDesc({ value: function () {} }));
6assert.equal(true, isDataDesc({ value: true }));
7
8assert.equal(false, isDataDesc('a'));
9assert.equal(false, isDataDesc(null));
10assert.equal(false, isDataDesc([]));
11
12assert.equal(false, isDataDesc({ value: 'foo', bar: 'baz' }));
13assert.equal(false, isDataDesc({ value: 'foo', bar: 'baz' }));
14assert.equal(false, isDataDesc({ value: 'foo', get: function () {} }));
15assert.equal(false, isDataDesc({ get: function () {}, value: 'foo' }) );
16 
17assert.equal(false, isDataDesc({ value: 'foo', enumerable: 'foo' }));
18assert.equal(false, isDataDesc({ value: 'foo', configurable: 'foo' }));
19assert.equal(false, isDataDesc({ value: 'foo', writable: 'foo' }));

Valid properties

The only valid data descriptor properties are the following:

configurable (required)
enumerable (required)
value (optional)
writable (optional)

To be a valid data descriptor, either value or writable must be defined.

Invalid properties

A descriptor may have additional invalid properties (an error will not be thrown).

1var foo = {};
2
3Object.defineProperty(foo, 'bar', {
4	enumerable: true,
5	whatever: 'blah', // invalid, but doesn't cause an error
6	get() {
7		return 'baz';
8	}
9});
10
11assert.equal(foo.bar, 'baz');

Related projects

is-accessor-descriptor: Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
is-descriptor: Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for… more

Tests

Simply clone the repo, npm install, and run npm test

No vulnerabilities found.

10

Dangerous-Workflow

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

10

Binary-Artifacts

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

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.

0

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

SAST

Determines if the project uses static code analysis.

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.

Score

4.4

/10

Last Scanned on 2025-07-07

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