npmpackage.info

@stdlib/utils-map-keys

Map keys from one object to a new object having the same values.

0.2.2

Apache-2.0

JavaScript

3.40 kB

4,137 4.3

Installations

npm install @stdlib/utils-map-keys

Developer Guide

BETA

Typescript

Yes

Module System

CommonJS

Min. Node Version

>=0.10.0

Node Version

16.20.2

NPM Version

8.19.4 Score

Supply Chain

89.9

Quality

82.3

Maintenance

100

Vulnerability

License

Pull Requests

Open

0

Total

0

Closed

0

Issues

Open

0

Total

0

Closed

0

Releases

Unable to fetch releases

Contributors

Unable to fetch Contributors

View All 11 Contributors

Languages

JavaScript

JavaScript (100%)

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Developer

stdlib-js

Download Statistics

Total Downloads

4,137

Last Day

Last Week

Last Month

Last Year

689

GitHub Statistics

Apache-2.0 License

4 Stars

72 Commits

3 Watchers

5 Branches

11 Contributors

Updated on Dec 30, 2024

Bundle Size

11.96 kB

Minified

3.40 kB

Minified + Gzipped

Bundlephobia

Sponsor this package

https://opencollective.com/stdlib

Maintainers

Package Meta Information

Latest Version

0.2.2

Package Id

@stdlib/utils-map-keys@0.2.2

Unpacked Size

29.92 kB

Size

8.80 kB

File Count

NPM Version

8.19.4

Node Version

16.20.2

Published on

Jul 27, 2024

Total Downloads

Cumulative downloads

Total Downloads

4,137

Last Day

200%

Compared to previous day

Last Week

63.6%

Compared to previous week

Last Month

-6.5%

Compared to previous month

Last Year

-42.7%

689

Compared to previous year

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dependencies

@stdlib/assert-has-own-property @stdlib/assert-is-function @stdlib/string-format @stdlib/error-tools-fmtprodmsg

About stdlib...

We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.

The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.

When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.

To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!

mapKeys

Map keys from one object to a new object having the same values.

Installation

1npm install @stdlib/utils-map-keys

Usage

1var mapKeys = require( '@stdlib/utils-map-keys' );

mapKeys( obj, transform )

Map keys from one object to a new object having the same values.

1function transform( key, value ) {
2    return key + value;
3}
4
5var obj1 = {
6    'a': 1,
7    'b': 2
8};
9
10var obj2 = mapKeys( obj1, transform );
11// returns { 'a1': 1, 'b2': 2 }

The transform function is provided three arguments:

key: object key
value: object value corresponding to key
obj: the input object

Notes

Key iteration order is not guaranteed, as object key enumeration is not specified according to the ECMAScript specification. In practice, however, most engines use insertion order to sort an object's keys, thus allowing for deterministic return values.
The function only maps own properties. Hence, the function does not map inherited properties.
The function shallow copies key values.
The value returned by a transform function should be a value which can be serialized as an object key.

Examples

1var mapKeys = require( '@stdlib/utils-map-keys' );
2
3function transform( key, value ) {
4    return key + ':' + value;
5}
6
7var obj1 = {
8    'a': 'beep',
9    'b': 'boop',
10    'c': 'foo',
11    'd': 'bar'
12};
13
14var obj2 = mapKeys( obj1, transform );
15
16console.dir( obj2 );
17// => { 'a:beep': 'beep', 'b:boop': 'boop', 'c:foo': 'foo', 'd:bar': 'bar' }

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

License

See LICENSE.

Copyright

No vulnerabilities found.

10

Binary-Artifacts

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10

Dangerous-Workflow

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10

Vulnerabilities

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10

License

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9

Security-Policy

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3

Pinned-Dependencies

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

Reason

dependency not pinned by hash detected -- score normalized to 3

Details

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Warn: npmCommand not pinned by hash: .github/workflows/test_coverage.yml:67
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Warn: npmCommand not pinned by hash: .github/workflows/test_coverage.yml:74
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Warn: npmCommand not pinned by hash: .github/workflows/test_published_package.yml:93
Info: 33 out of 33 GitHub-owned GitHubAction dependencies pinned
Info: 19 out of 24 third-party GitHubAction dependencies pinned
Info: 0 out of 32 npmCommand dependencies pinned

1

Maintained

Determines if the project is "actively maintained".

0

Code-Review

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

0

CII-Best-Practices

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

0

Fuzzing

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0

Token-Permissions

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

0

SAST

Determines if the project uses static code analysis.

0

Branch-Protection

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

Score

4.3

/10

Last Scanned on 2025-02-10

The Open Source Security Foundation is a cross-industry collaboration to improve the security of open source software (OSS). The Scorecard provides security health metrics for open source projects.

Learn More

Other packages similar to @stdlib/utils-map-keys

@stdlib/utils-async-map-keys

0.2.2

Map keys from one object to a new object having the same values.

@stdlib/utils-lowercase-keys

0.2.2

Convert each object key to lowercase.

@stdlib/utils-map-values

0.2.2

Map values from one object to a new object having the same keys.

@stdlib/utils-uppercase-keys

0.2.2

Convert each object key to uppercase.

@stdlib/utils-map-keys

Installations

Developer Guide

Yes

CommonJS

>=0.10.0

16.20.2

8.19.4

Score

Pull Requests

0

0

0

Issues

0

0

0

Releases

Unable to fetch releases

Contributors

Unable to fetch Contributors

Languages

Developer

Download Statistics

GitHub Statistics

Bundle Size

11.96 kB

3.40 kB

Sponsor this package

Maintainers

Package Meta Information

Total Downloads

4,137

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dependencies

mapKeys

Installation

Usage

mapKeys( obj, transform )

Notes

Examples

See Also

Notice

Community

License

Copyright

10

10

10

10

9

3

1

0

0

0

0

0

0

4.3

/10

Other packages similar to @stdlib/utils-map-keys