NAME
npm-deprecated-check β π¦ Check for deprecated packages
SYNOPSIS
npm install -g npm-deprecated-checkINFO
DESCRIPTION
π¦ Check for deprecated packages
README
π¦ npm-deprecated-check
Check for deprecated packages
Preview

Requirements
Since version 1.4.0, npm-deprecated-check requires Node.js 18 or higher.
Install
npm install -g npm-deprecated-check
Features
- Check the packages of current project, global or specified is deprecated.
- According to the version range of lockfile and package.json.
- Recommend alternative packages through OpenAI.
- Additionally checks if the running node version reached End Of Life.
- Return the minimum upgradable version.
- Check if the current environment meets the Node.js version range required for dependency operation.
- Calculate the minimum Node.js version required across all dependencies.
- Suggest compatible dependency versions when Node.js version requirements are not met.
Node.js Version Compatibility
The tool automatically analyzes Node.js version requirements across all dependencies and provides helpful information.
Default Output
By default, you get a concise summary showing the recommended engines.node value:
π Node Version Summary: Minimum engines.node: >=20.0.0
β οΈ Recommendation: Update package.json engines.node to ">=20.0.0" Current: >=18.12
Detailed Output (--verbose)
Use the --verbose flag for detailed information:
ndc current --verbose
π Node Version Summary (detailed): Minimum Node version (production): 20.0.0 Determined by: eslint@9.35.0 Minimum Node version (development): 20.17.0 Determined by: typescript@5.7.2 Current Node version: v25.4.0 Project engines.node: >=18.12
β οΈ Production dependencies require Node >=20.0.0, but package.json allows >=18.12 Consider updating engines.node to ">=20.0.0"
The detailed view shows:
- Separate production and development requirements
- Which package determines each minimum version
- Your current Node.js version
- The project's engines.node value
- Detailed validation messages
Compatible Version Suggestions
When a dependency requires a newer Node.js version than you're currently running, the tool suggests a compatible alternative version (shown with --verbose):
WARN eslint@9.35.0: 2024-10-05T18:45:12.345Z
Required node: ^18.18.0 || ^20.9.0 || >=21.1.0
Compatible version for current Node: 8.57.1
This allows you to either upgrade your Node.js version or downgrade the dependency to a compatible version.
Engines Validation
When checking a project with ndc current, the tool compares your package.json engines.node field against the actual requirements of your dependencies.
This helps you:
- Keep
engines.nodein sync with actual dependency requirements - Prevent CI/CD failures due to incorrect Node version specifications
- Ensure contributors use compatible Node versions
Usage
Usage: ndc <command> [options]Options: -V, --version output the version number -h, --help display help for command
Commands: current [options] check the packages of the current project global [options] check global packages, default: npm package [options] <packageName> check for specified package node check if used node version is deprecated (reached End Of Life) config [options] inspect and modify the config help [command] display help for command
OpenAI config:
Options:
--openaiKey <value> recommend alternative packages via ChatGPT
--openaiModel <value> ChatGPT model (choices: "gpt-3.5-turbo", "gpt-4", "gpt-4-turbo", "gpt-4o-mini", "gpt-4o")
--openaiBaseURL <value> override the default base URL for the API
For current:
Options:
--registry <value> specify registry URL, default: https://registry.npmjs.org/
--ignore <value> ignore specific packages, example: request,tslint
--failfast exit the program if it has been deprecated
--deep deep inspection for monorepo projects
--verbose show detailed Node version compatibility information
For global:
Options:
-m, --manager <value> check specified package manager (choices: "npm", "yarn", "pnpm")
--registry <value> specify registry URL, default: https://registry.npmjs.org/
--ignore <value> ignore specific packages, example: request,tslint
--failfast exit the program if it has been deprecated
For package:
-r, --range <value> check specified versions
--registry <value> specify registry URL, default: https://registry.npmjs.org/
--failfast exit the program if it has been deprecated
You can also save them to global configuration:
Usage: ndc config [options]inspect and modify the config
Options: -g, --get <path> get value from option -s, --set <path> <value> set option value -d, --delete <path> delete option from config -l, --list list all options
The path should be openaiKey, openaiModel, openaiBaseURL.
Credits
npm-deprecated-check is inspired by check-is-deprecated.