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Gathering detailed insights and metrics for mem-fs

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Gathering detailed insights and metrics for mem-fs

mem-fs - 4.1.2 | npmpackage.info

mem-fs

Simple in-memory vinyl file store.

4.1.2

126

MIT

TypeScript

8.82 kB

4.1

Installations

npm install mem-fs

Developer Guide

BETA

Typescript

Yes

Module System

ESM

Min. Node Version

>=18.0.0

Node Version

22.12.0

NPM Version

10.8.2 Pull Requests

Open

1

Total

31

Closed

6

Merged

24

Issues

Open

3

Total

12

Closed

9

Releases

v4.1.2

Updated on Dec 12, 2024

v4.1.1

Updated on Oct 12, 2024

v4.1.0

Updated on Feb 26, 2024

v4.0.0

Updated on Oct 15, 2023

v4.0.0-beta.1

Updated on Oct 09, 2023

v3.0.0

Updated on Apr 17, 2023

View All 16 releases

Languages

TypeScript

TypeScript (100%)

Developer

SBoudrias

Download Statistics

Total Downloads

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

MIT License

126 Stars

76 Commits

14 Forks

9 Watchers

23 Branches

6 Contributors

Updated on May 02, 2025

Maintainers

View All 6 Contributors

Package Meta Information

Latest Version

4.1.2

Package Id

mem-fs@4.1.2

Unpacked Size

8.82 kB

Size

2.67 kB

File Count

NPM Version

10.8.2

Node Version

22.12.0

Published on

Dec 12, 2024

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

@types/node @types/vinyl vinyl vinyl-file

Dev Dependencies

@typescript-eslint/eslint-plugin @typescript-eslint/parser @vitest/coverage-v8 eslint eslint-config-prettier eslint-config-xo eslint-plugin-prettier prettier typescript vitest

mem-fs

Simple in-memory vinyl file store.

Usage

Loading a file

You access a file using store#get() method. If the file is in memory, it will be used. Otherwise, we'll load the file from the file-system.

1import { create } from 'mem-fs';
2
3const store = create();
4store.get('/test/file.txt');

When trying to load a file we cannot read from disk, an empty Vinyl file will be returned. The contents of this file will be set to null.

Trying to get a directory or any invalid files will also return an empty Vinyl file pointer.

Adding/updating a file

You update file references by using store#add() method. This method take a vinyl file object as parameter.

1import File from 'vinyl';
2import { create } from 'mem-fs';
3
4const coffeeFile = new File({
5  cwd: '/',
6  base: '/test/',
7  path: '/test/file.coffee',
8  contents: new Buffer('test = 123'),
9});
10
11const store = create();
12store.add(coffeeFile);

Iterating over the file system

Using store#each(cb(file, index)), you can iterate over every file stored in the file system.

Get all files

Using store#all(), you can get every file stored in the file system.

Check existence in the file system

Using store#existsInMemory(), you can check if the file already exists in the file system without loading it from disk.

Stream every file stored in the file system

Using store#stream(), you can create a stream with every file stored in the file system.

Pass stored files through a pipeline

store#pipeline() generates a new map with yielded files in transforms. If no transform is passed, files references are updated.

No vulnerabilities found.

10

Security-Policy

Determines if the project has published a security policy.

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

License

Determines if the project has defined a license.

3

Code-Review

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

3

Pinned-Dependencies

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

1

Maintained

Determines if the project is "actively maintained".

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

SAST

Determines if the project uses static code analysis.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Score

4.1

/10

Last Scanned on 2025-07-07

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.

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