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Gathering detailed insights and metrics for @stdlib/fs-exists

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Gathering detailed insights and metrics for @stdlib/fs-exists

@stdlib/fs-exists - 0.2.2 | npmpackage.info

@stdlib/fs-exists

Test whether a path exists on the filesystem.

0.2.2

Apache-2.0

JavaScript

2.46 kB

80,478,479 4.2

Installations

npm install @stdlib/fs-exists

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

99.4

Supply Chain

96.7

Quality

81.6

Maintenance

100

Vulnerability

100

License

Pull Requests

Open

0

Total

0

Closed

0

Issues

Open

0

Total

0

Closed

0

Releases

Unable to fetch releases

Languages

JavaScript

JavaScript (100%)

Developer

stdlib-js

Download Statistics

Total Downloads

80,478,479

Last Day

13,651

Last Week

425,503

Last Month

1,918,600

Last Year

23,967,606

GitHub Statistics

Apache-2.0 License

1 Stars

67 Commits

3 Watchers

6 Branches

14 Contributors

Updated on May 26, 2025

Bundle Size

7.17 kB

Minified

2.46 kB

Minified + Gzipped

Bundlephobia

Sponsor this package

https://opencollective.com/stdlib

Maintainers

View All 14 Contributors

Package Meta Information

Latest Version

0.2.2

Package Id

@stdlib/fs-exists@0.2.2

Unpacked Size

34.00 kB

Size

9.40 kB

File Count

NPM Version

8.19.4

Node Version

16.20.2

Published on

Jul 27, 2024

Total Downloads

Cumulative downloads

Total Downloads

80,478,479

Last Day

-2.6%

13,651

Compared to previous day

Last Week

-10%

425,503

Compared to previous week

Last Month

-4.1%

1,918,600

Compared to previous month

Last Year

-40.9%

23,967,606

Compared to previous year

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dependencies

@stdlib/utils-define-nonenumerable-read-only-property

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!

Exists

Test whether a path exists on the filesystem.

Installation

1npm install @stdlib/fs-exists

Usage

1var exists = require( '@stdlib/fs-exists' );

exists( path, clbk )

Asynchronously tests whether a path exists on the filesystem.

1exists( __dirname, done );
2
3function done( bool ) {
4    if ( bool ) {
5        console.log( '...path exists.' );
6    } else {
7        console.log( '...path does not exist.' );
8    }
9}

The above callback signature matches the now deprecated fs.exists() API. The function also accepts the more conventional error-first style callback signature found in most asynchronous Node APIs.

1exists( __dirname, done );
2
3function done( error, bool ) {
4    if ( error ) {
5        console.error( error.message );
6    }
7    if ( bool ) {
8        console.log( '...path exists.' );
9    } else {
10        console.log( '...path does not exist.' );
11    }
12}

exists.sync( path )

Synchronously tests whether a path exists on the filesystem.

1var bool = exists.sync( __dirname );
2// returns <boolean>

Notes

The following is considered an anti-pattern:

1var path = require( 'path' );
2var readFileSync = require( '@stdlib/fs-read-file' ).sync;
3
4var file = path.join( __dirname, 'foo.js' );
5if ( exists.sync( __dirname ) ) {
6    file = readFileSync( file );
7}

Because time elapses between checking for existence and performing IO, at the time IO is performed, the path is no longer guaranteed to exist. In other words, a race condition exists between the process attempting to read and another process attempting to delete.

Instead, the following pattern is preferred, where errors are handled explicitly:

1var path = require( 'path' );
2var readFileSync = require( '@stdlib/fs-read-file' ).sync;
3
4var file = path.join( __dirname, 'foo.js' );
5try {
6    file = readFileSync( file );
7} catch ( error ) {
8    console.log( 'unable to read file.' );
9    console.error( error );
10}

Nevertheless, use cases exist where one desires to check existence without performing IO. For example,

1var path = require( 'path' );
2var writeFileSync = require( '@stdlib/fs-write-file' ).sync;
3
4var file = path.join( __dirname, 'foo.js' );
5if ( exists.sync( file ) ) {
6    console.log( 'Don\'t overwrite the file!' );
7} else {
8    writeFileSync( file, 'beep', {
9        'encoding': 'utf8'
10    });
11}

Examples

1var exists = require( '@stdlib/fs-exists' );
2
3/* Sync */
4
5console.log( exists.sync( __dirname ) );
6// => true
7
8console.log( exists.sync( 'beepboop' ) );
9// => false
10
11/* Async */
12
13exists( __dirname, done );
14exists( 'beepboop', done );
15
16function done( error, bool ) {
17    if ( error ) {
18        console.error( error.message );
19    } else {
20        console.log( bool );
21    }
22}

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

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.

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

Warn: third-party GitHubAction not pinned by hash: .github/workflows/productionize.yml:274: update your workflow using https://app.stepsecurity.io/secureworkflow/stdlib-js/fs-exists/productionize.yml/main?enable=pin
Warn: third-party GitHubAction not pinned by hash: .github/workflows/productionize.yml:448: update your workflow using https://app.stepsecurity.io/secureworkflow/stdlib-js/fs-exists/productionize.yml/main?enable=pin
Warn: third-party GitHubAction not pinned by hash: .github/workflows/productionize.yml:456: update your workflow using https://app.stepsecurity.io/secureworkflow/stdlib-js/fs-exists/productionize.yml/main?enable=pin
Warn: third-party GitHubAction not pinned by hash: .github/workflows/productionize.yml:621: update your workflow using https://app.stepsecurity.io/secureworkflow/stdlib-js/fs-exists/productionize.yml/main?enable=pin
Warn: third-party GitHubAction not pinned by hash: .github/workflows/productionize.yml:84: update your workflow using https://app.stepsecurity.io/secureworkflow/stdlib-js/fs-exists/productionize.yml/main?enable=pin
Warn: npmCommand not pinned by hash: .github/workflows/benchmark.yml:58
Warn: npmCommand not pinned by hash: .github/workflows/benchmark.yml:58
Warn: npmCommand not pinned by hash: .github/workflows/benchmark.yml:58
Warn: npmCommand not pinned by hash: .github/workflows/examples.yml:58
Warn: npmCommand not pinned by hash: .github/workflows/examples.yml:58
Warn: npmCommand not pinned by hash: .github/workflows/examples.yml:58
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:794
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:794
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:794
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:156
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:156
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:156
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:164
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:268
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:268
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:268
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:435
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:435
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:435
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:615
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:615
Warn: npmCommand not pinned by hash: .github/workflows/productionize.yml:615
Warn: npmCommand not pinned by hash: .github/workflows/test.yml:76
Warn: npmCommand not pinned by hash: .github/workflows/test.yml:76
Warn: npmCommand not pinned by hash: .github/workflows/test.yml:76
Warn: npmCommand not pinned by hash: .github/workflows/test.yml:83
Warn: npmCommand not pinned by hash: .github/workflows/test_bundles.yml:72
Warn: npmCommand not pinned by hash: .github/workflows/test_coverage.yml:67
Warn: npmCommand not pinned by hash: .github/workflows/test_coverage.yml:67
Warn: npmCommand not pinned by hash: .github/workflows/test_coverage.yml:67
Warn: npmCommand not pinned by hash: .github/workflows/test_coverage.yml:74
Warn: npmCommand not pinned by hash: .github/workflows/test_install.yml:75
Warn: npmCommand not pinned by hash: .github/workflows/test_install.yml:75
Warn: npmCommand not pinned by hash: .github/workflows/test_install.yml:75
Warn: npmCommand not pinned by hash: .github/workflows/test_published_package.yml:93
Info: 37 out of 37 GitHub-owned GitHubAction dependencies pinned
Info: 23 out of 28 third-party GitHubAction dependencies pinned
Info: 0 out of 35 npmCommand dependencies pinned

0

Maintained

Determines if the project is "actively maintained".

0

CII-Best-Practices

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

0

Code-Review

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

0

SAST

Determines if the project uses static code analysis.

0

Fuzzing

Determines if the project uses fuzzing.

0

Token-Permissions

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

0

Branch-Protection

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

Score

4.2

/10

Last Scanned on 2025-06-23

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/fs-exists

Other packages similar to @stdlib/fs-exists

@stdlib/fs-exists

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

Languages

Developer

Download Statistics

GitHub Statistics

Bundle Size

7.17 kB

2.46 kB

Sponsor this package

Maintainers

Package Meta Information

Total Downloads

80,478,479

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dependencies

Exists

Installation

Usage

exists( path, clbk )

exists.sync( path )

Notes

Examples

See Also

Notice

Community

License

Copyright

10

10

10

10

9

3

0

0

0

0

0

0

0

4.2

/10