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Gathering detailed insights and metrics for ts-async-semaphore

Gathering detailed insights and metrics for ts-async-semaphore

ts-async-semaphore - 4.0.1 | npmpackage.info

ts-async-semaphore

A counting semaphore based on Java's Concurrent Semaphore.

4.0.1

4

MIT

TypeScript

21.91 kB

Installations

npm install ts-async-semaphore

Developer Guide

BETA

Typescript

Yes

Module System

CommonJS, ESM

Min. Node Version

>=14.5.0

Node Version

20.9.0

NPM Version

10.1.0

Pull Requests

Open

6

Total

433

Closed

81

Merged

346

Issues

Open

1

Total

4

Closed

3

Releases

8

v4.0.1

Updated on Feb 20, 2024

v3.0.4

Updated on Jan 17, 2022

v3.0.3

Updated on Jan 17, 2022

v3.0.1

Updated on Jan 17, 2022

v3.0.0

Updated on Feb 26, 2021

v2.0.0

Updated on Nov 27, 2019

View All 8 releases

Languages

3

TypeScript

JavaScript

Shell

TypeScript (85.05%)

JavaScript (13.18%)

Shell (1.77%)

Developer

skrtheboss

Download Statistics

Total Downloads

0

Last Day

0

Last Week

0

Last Month

0

Last Year

0

GitHub Statistics

MIT License

4 Stars

360 Commits

1 Watchers

13 Branches

4 Contributors

Updated on Aug 12, 2024

Maintainers

1

View All 4 Contributors

Package Meta Information

Latest Version

4.0.1

Package Id

ts-async-semaphore@4.0.1

Unpacked Size

21.91 kB

Size

4.80 kB

File Count

9

NPM Version

10.1.0

Node Version

20.9.0

Published on

Feb 20, 2024

Total Downloads

Cumulative downloads

Total Downloads

NaN

Last Day

0%

NaN

Compared to previous day

Last Week

0%

NaN

Compared to previous week

Last Month

0%

NaN

Compared to previous month

Last Year

0%

NaN

Compared to previous year

Weekly Downloads

Monthly Downloads

Yearly Downloads

TS Async Semaphore Banner

Async Semaphore

A counting semaphore based on Java's Concurrent Semaphore.

Install

Install the module via npm:

npm install ts-async-semaphore

Quick Example

1// fairness false
2
3import { Semaphore } from 'ts-async-semaphore';
4const semaphore = new Semaphore(0);
5
6semaphore.acquire(2).then(() => {
7    console.log('Hello');
8});
9
10semaphore.acquire().then(() => {
11    console.log('World');
12
13    semaphore.release(2);
14});
15
16setTimeout(function () {
17    semaphore.release();
18}, 2000);

1// fairness true
2
3import { Semaphore } from 'ts-async-semaphore';
4const semaphore = new Semaphore(0, true);
5
6semaphore.acquire(2).then(() => {
7    console.log('Hello');
8});
9
10semaphore.acquire().then(() => {
11    console.log('World');
12});
13
14semaphore.release(1);
15
16setTimeout(function () {
17    semaphore.release(2);
18}, 2000);

1import { Semaphore } from 'ts-async-semaphore';
2const semaphore = new Semaphore(0, true);
3
4semaphore.tryAcquire(1, 50).then((val) => {
5    console.log(`Acquire ${val ? 'success' : 'fail'}`);
6});

Documentation

Constructor: Semaphore([`permits`], [`fairness`])

permits: Integer Initial available permits of semaphore. Default: 0.

fairness: Boolean Fairness of semaphore. If set to true, a FIFO rules applied, else, look on each acquirers permit value.

#availablePermits()

Returns the current number of permits available in this semaphore.

Returns: number

#acquire([`permits`])

Acquires the given number of permits from this semaphore.

permits: number The number of permits to acquire. Default: 0.

Returns: `Promise<void>`

#getQueuedAcquirers()

Returns an estimate of the number of acquirers waiting to acquire.

Returns: Function[]

#getQueueLength()

Returns an estimate of the number of acquirers waiting to acquire.

Returns: number

#release([`permits`])

Releases the given number of permits, returning them to the semaphore.

permits: number The number of permits to release. Default: 0.

#drainPermits()

Acquires and returns all permits that are immediately available.

Returns: number

#reducePermits(`permits`)

Shrinks the number of available permits by the indicated reduction.

permits: number The number of permits to remove.

#tryAcquire([`permits`], [`timeoutMs`])

Acquires the given number of permits from this semaphore.

permits: number The number of permits to acquire. Default: 0. timeoutMs: number The timeout after which the acquire will fail

Returns: Boolean Promise true if success, false false if fail

Empty State

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

License

Determines if the project has defined a license.

7

SAST

Determines if the project uses static code analysis.

0

Code-Review

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

0

Token-Permissions

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

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

CII-Best-Practices

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

0

Security-Policy

Determines if the project has published a security policy.

0

Fuzzing

Determines if the project uses fuzzing.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Score

3.2

/10

Last Scanned on 2025-06-30

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.