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@yarnpkg/lockfile
Advanced tools
Package description
The @yarnpkg/lockfile npm package is designed for parsing and generating `yarn.lock` files. It allows developers to programmatically interact with the contents of these lock files, which are used by Yarn to lock down the versions of package dependencies for a project. This ensures consistent installations across different machines and environments.
Parse a yarn.lock file
This feature allows you to parse the contents of a `yarn.lock` file into a JSON object. This can be useful for analyzing or manipulating the dependencies of a project programmatically.
"const fs = require('fs');\nconst lockfile = require('@yarnpkg/lockfile');\n\nlet file = fs.readFileSync('yarn.lock', 'utf8');\nlet json = lockfile.parse(file);\nconsole.log(json);"
Generate a yarn.lock file content
This feature enables you to generate the content for a `yarn.lock` file from a JSON object. This could be useful for creating or updating a lock file programmatically after modifying project dependencies.
"const fs = require('fs');\nconst lockfile = require('@yarnpkg/lockfile');\n\nlet json = {\n type: 'success',\n object: {\n 'package-name@version': {\n version: '1.0.0',\n resolved: 'https://registry.yarnpkg.com/package-name/-/package-name-1.0.0.tgz',\n integrity: 'sha512-...'\n }\n }\n};\n\nlet file = lockfile.stringify(json.object);\nfs.writeFileSync('yarn.lock', file);"
The `lockfile` package provides basic locking of resources in Node.js but does not specifically handle `yarn.lock` or `package-lock.json` files. It's more general-purpose compared to @yarnpkg/lockfile, which is focused on Yarn's lock file format.
This package focuses on working with `package-lock.json` files used by npm. It offers functionality similar to @yarnpkg/lockfile but is tailored for npm's ecosystem, making it a good alternative for projects that use npm instead of Yarn.
Readme
Parse and/or write yarn.lock
files
const fs = require('fs');
const lockfile = require('@yarnpkg/lockfile');
// or (es6)
import fs from 'fs';
import * as lockfile from '@yarnpkg/lockfile';
let file = fs.readFileSync('yarn.lock', 'utf8');
let json = lockfile.parse(file);
console.log(json);
let fileAgain = lockfile.stringify(json);
console.log(fileAgain);
FAQs
The parser/stringifier for Yarn lockfiles.
The npm package @yarnpkg/lockfile receives a total of 5,655,589 weekly downloads. As such, @yarnpkg/lockfile popularity was classified as popular.
We found that @yarnpkg/lockfile demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 5 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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Research
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