# npm-check-updates [![npm version](https://img.shields.io/npm/v/npm-check-updates)](https://www.npmjs.com/package/npm-check-updates) [![Build Status](https://img.shields.io/github/actions/workflow/status/raineorshine/npm-check-updates/test.yml?branch=main&label=tests&logo=github)](https://github.com/raineorshine/npm-check-updates/actions?query=workflow%3ATests+branch%3Amain) **npm-check-updates upgrades your package.json dependencies to the _latest_ versions, ignoring specified versions.** - maintains existing semantic versioning _policies_, i.e. `"react": "^17.0.2"` to `"react": "^18.3.1"`. - _only_ modifies package.json file. Run `npm install` to update your installed packages and package-lock.json. - sensible defaults, but highly customizable - compatible with npm, yarn, pnpm, deno, and bun - CLI and module usage example output

$${\color{red}Red}$$ major upgrade (and all [major version zero](https://semver.org/#spec-item-4))
$${\color{cyan}Cyan}$$ minor upgrade
$${\color{green}Green}$$ patch upgrade
## Installation Install globally to use `npm-check-updates` or the shorter `ncu`: ```sh npm install -g npm-check-updates ``` Or run with [npx](https://docs.npmjs.com/cli/v7/commands/npx) (only the long form is supported): ```sh npx npm-check-updates ``` ## Usage Check the latest versions of all project dependencies: ```sh $ ncu Checking package.json [====================] 5/5 100% eslint 7.32.0 → 8.0.0 prettier ^2.7.1 → ^3.0.0 svelte ^3.48.0 → ^3.51.0 typescript >3.0.0 → >4.0.0 untildify <4.0.0 → ^4.0.0 webpack 4.x → 5.x Run ncu -u to upgrade package.json ``` Upgrade a project's package file: > **Make sure your package file is in version control and all changes have been committed. This _will_ overwrite your package file.** ```sh $ ncu -u Upgrading package.json [====================] 1/1 100% express 4.12.x → 4.13.x Run npm install to install new versions. $ npm install # update installed packages and package-lock.json ``` Check global packages: ```sh ncu -g ``` ## Interactive Mode Choose which packages to update in interactive mode: ```sh ncu --interactive ncu -i ``` ![ncu --interactive](https://user-images.githubusercontent.com/750276/175337598-cdbb2c46-64f8-44f5-b54e-4ad74d7b52b4.png) Combine with `--format group` for a truly _luxe_ experience: ![ncu --interactive --format group](https://user-images.githubusercontent.com/750276/175336533-539261e4-5cf1-458f-9fbb-a7be2b477ebb.png) ## Filter packages Filter packages using the `--filter` option or adding additional cli arguments: ```sh # upgrade only mocha ncu mocha ncu -f mocha ncu --filter mocha # upgrade only chalk, mocha, and react ncu chalk mocha react ncu chalk, mocha, react ncu -f "chalk mocha react" ``` Filter with wildcards or regex: ```sh # upgrade packages that start with "react-" ncu react-* ncu "/^react-.*$/" ``` Exclude specific packages with the `--reject` option or prefixing a filter with `!`. Supports strings, wildcards, globs, comma-or-space-delimited lists, and regex: ```sh # upgrade everything except nodemon ncu \!nodemon ncu -x nodemon ncu --reject nodemon # upgrade packages that do not start with "react-". ncu \!react-* ncu '/^(?!react-).*$/' # mac/linux ncu "/^(?!react-).*$/" # windows ``` Advanced filters: [filter](https://github.com/raineorshine/npm-check-updates#filter), [filterResults](https://github.com/raineorshine/npm-check-updates#filterresults), [filterVersion](https://github.com/raineorshine/npm-check-updates#filterversion) ## How dependency updates are determined - Direct dependencies are updated to the latest stable version: - `2.0.1` → `2.2.0` - `1.2` → `1.3` - `0.1.0` → `1.0.1` - Range operators are preserved and the version is updated: - `^1.2.0` → `^2.0.0` - `1.x` → `2.x` - `>0.2.0` → `>0.3.0` - "Less than" is replaced with a wildcard: - `<2.0.0` → `^3.0.0` - `1.0.0 < 2.0.0` → `^3.0.0` - "Any version" is preserved: - `*` → `*` - Prerelease versions are ignored by default. - Use `--pre` to include prerelease versions (e.g. `alpha`, `beta`, `build1235`) - Choose what level to upgrade to: - With `--target semver`, update according to your specified [semver](https://semver.org/) version ranges: - `^1.1.0` → `^1.9.99` - With `--target minor`, strictly update the patch and minor versions (including major version zero): - `0.1.0` → `0.2.1` - With `--target patch`, strictly update the patch version (including major version zero): - `0.1.0` → `0.1.2` - With `--target @next`, update to the version published on the `next` tag: - `0.1.0` -> `0.1.1-next.1` ## Options Options are merged with the following precedence: 1. Command line options 2. Local [Config File](#config-file) (current working directory) 3. Project Config File (next to package.json) 4. User Config File (`$HOME`) Options that take no arguments can be negated by prefixing them with `--no-`, e.g. `--no-peer`.

--cache	Cache versions to a local cache file. Default `--cacheFile` is ~/.ncu-cache.json and default `--cacheExpiration` is 10 minutes.
--cacheClear	Clear the default cache, or the cache file specified by `--cacheFile`.
--cacheExpiration <min>	Cache expiration in minutes. Only works with `--cache`. (default: 10)
--cacheFile <path>	Filepath for the cache file. Only works with `--cache`. (default: "~/.ncu-cache.json")
--color	Force color in terminal.
--concurrency <n>	Max number of concurrent HTTP requests to registry. (default: 8)
--configFileName <s>	Config file name. (default: .ncurc.{json,yml,js,cjs})
--configFilePath <path>	Directory of .ncurc config file. (default: directory of `packageFile`)
--cwd <path>	Working directory in which npm will be executed.
--deep	Run recursively in current working directory. Alias of (`--packageFile '**/package.json').`
--dep <value>	Check one or more sections of dependencies only: dev, optional, peer, prod, or packageManager (comma-delimited). (default: ["prod","dev","optional","packageManager"])
--deprecated	Include deprecated packages. Use `--no-deprecated` to exclude deprecated packages (uses more bandwidth). (default: true)
-d, --doctor	Iteratively installs upgrades and runs tests to identify breaking upgrades. Requires `-u` to execute.
--doctorInstall <command>	Specifies the install script to use in doctor mode. (default: `npm install` or the equivalent for your package manager)
--doctorTest <command>	Specifies the test script to use in doctor mode. (default: `npm test`)
--enginesNode	Include only packages that satisfy engines.node as specified in the package file.
-e, --errorLevel <n>	Set the error level. 1: exits with error code 0 if no errors occur. 2: exits with error code 0 if no packages need updating (useful for continuous integration). (default: 1)
-f, --filter <p>	Include only package names matching the given string, wildcard, glob, comma-or-space-delimited list, /regex/, or predicate function.
filterResults <fn>	Filters results based on a user provided predicate function after fetching new versions.
--filterVersion <p>	Filter on package version using comma-or-space-delimited list, /regex/, or predicate function.
--format <value>	Modify the output formatting or show additional information. Specify one or more comma-delimited values: group, ownerChanged, repo, time, lines, installedVersion. (default: [])
-g, --global	Check global packages instead of in the current project.
groupFunction <fn>	Customize how packages are divided into groups when using `--format group`.
--install <value>	Control the auto-install behavior: always, never, prompt. (default: "prompt")
-i, --interactive	Enable interactive prompts for each dependency; implies `-u` unless one of the json options are set.
-j, --jsonAll	Output new package file instead of human-readable message.
--jsonDeps	Like `jsonAll` but only lists `dependencies`, `devDependencies`, `optionalDependencies`, etc of the new package data.
--jsonUpgraded	Output upgraded dependencies in json.
-l, --loglevel <n>	Amount to log: silent, error, minimal, warn, info, verbose, silly. (default: "warn")
--mergeConfig	Merges nested configs with the root config file for `--deep` or `--packageFile` options. (default: false)
-m, --minimal	Do not upgrade newer versions that are already satisfied by the version range according to semver.
--packageData <value>	Package file data (you can also use stdin).
--packageFile <path\|glob>	Package file(s) location. (default: ./package.json)
-p, --packageManager <s>	npm, yarn, pnpm, deno, bun, staticRegistry (default: npm).
--peer	Check peer dependencies of installed packages and filter updates to compatible versions.
--pre <n>	Include prerelease versions, e.g. -alpha.0, -beta.5, -rc.2. Automatically set to 1 when `--target` is newest or greatest, or when the current version is a prerelease. (default: 0)
--prefix <path>	Current working directory of npm.
-r, --registry <uri>	Specify the registry to use when looking up package versions.
--registryType <type>	Specify whether --registry refers to a full npm registry or a simple JSON file or url: npm, json. (default: npm)
-x, --reject <p>	Exclude packages matching the given string, wildcard, glob, comma-or-space-delimited list, /regex/, or predicate function.
--rejectVersion <p>	Exclude package.json versions using comma-or-space-delimited list, /regex/, or predicate function.
--removeRange	Remove version ranges from the final package version.
--retry <n>	Number of times to retry failed requests for package info. (default: 3)
--root	Runs updates on the root project in addition to specified workspaces. Only allowed with `--workspace` or `--workspaces`. (default: true)
-s, --silent	Don't output anything. Alias for `--loglevel` silent.
--stdin	Read package.json from stdin.
-t, --target <value>	Determines the version to upgrade to: latest, newest, greatest, minor, patch, semver, `@[tag], or [function]. (default: latest)`
--timeout <ms>	Global timeout in milliseconds. (default: no global timeout and 30 seconds per npm-registry-fetch)
-u, --upgrade	Overwrite package file with upgraded versions instead of just outputting to console.
--verbose	Log additional information for debugging. Alias for `--loglevel` verbose.
-w, --workspace <s>	Run on one or more specified workspaces. Add `--root` to also upgrade the root project. (default: [])
-ws, --workspaces	Run on all workspaces. Add `--root` to also upgrade the root project.

## Advanced Options Some options have advanced usage, or allow per-package values by specifying a function in your .ncurc.js file. Run `ncu --help [OPTION]` to view advanced help for a specific option, or see below: ## doctor Usage: ncu --doctor -u ncu --no-doctor ncu -du Iteratively installs upgrades and runs your project's tests to identify breaking upgrades. Reverts broken upgrades and updates package.json with working upgrades. Requires `-u` to execute (modifies your package file, lock file, and node_modules) To be more precise: 1. Runs `npm install` and `npm test` to ensure tests are currently passing. 2. Runs `ncu -u` to optimistically upgrade all dependencies. 3. If tests pass, hurray! 4. If tests fail, restores package file and lock file. 5. For each dependency, install upgrade and run tests. 6. Prints broken upgrades with test error. 7. Saves working upgrades to package.json. Additional options:

--doctorInstall	specify a custom install script (default: `npm install` or `yarn`)
--doctorTest	specify a custom test script (default: `npm test`)

Example: $ ncu --doctor -u Running tests before upgrading npm install npm run test Upgrading all dependencies and re-running tests ncu -u npm install npm run test Tests failed Identifying broken dependencies npm install npm install --no-save react@16.0.0 npm run test ✓ react 15.0.0 → 16.0.0 npm install --no-save react-redux@7.0.0 npm run test ✗ react-redux 6.0.0 → 7.0.0 /projects/myproject/test.js:13 throw new Error('Test failed!') ^ npm install --no-save react-dnd@11.1.3 npm run test ✓ react-dnd 10.0.0 → 11.1.3 Saving partially upgraded package.json ## filter Usage: ncu --filter [p] ncu -f [p] Include only package names matching the given string, wildcard, glob, comma-or-space-delimited list, /regex/, or predicate function. Only included packages will be checked with `--peer`. `--filter` runs _before_ new versions are fetched, in contrast to `--filterResults` which runs _after_. You can also specify a custom function in your .ncurc.js file, or when importing npm-check-updates as a module. > :warning: The predicate function is only available in .ncurc.js or when importing npm-check-updates as a module, not on the command line. To convert a JSON config to a JS config, follow the instructions at https://github.com/raineorshine/npm-check-updates#config-functions. ```js /** @param name The name of the dependency. @param semver A parsed Semver array of the current version. (See: https://git.coolaj86.com/coolaj86/semver-utils.js#semverutils-parse-semverstring) @returns True if the package should be included, false if it should be excluded. */ filter: (name, semver) => { if (name.startsWith('@myorg/')) { return false } return true } ``` ## filterResults Filters results based on a user provided predicate function after fetching new versions. `filterResults` runs _after_ new versions are fetched, in contrast to `filter`, `reject`, `filterVersion`, and `rejectVersion`, which run _before_. This allows you to exclude upgrades with `filterResults` based on how the version has changed (e.g. a major version change). > :warning: The predicate function is only available in .ncurc.js or when importing npm-check-updates as a module, not on the command line. To convert a JSON config to a JS config, follow the instructions at https://github.com/raineorshine/npm-check-updates#config-functions. ```js /** Exclude major version updates. Note this could also be achieved with --target semver. @param {string} packageName The name of the dependency. @param {string} current Current version declaration (may be a range). @param {SemVer[]} currentVersionSemver Current version declaration in semantic versioning format (may be a range). @param {string} upgraded Upgraded version. @param {SemVer} upgradedVersionSemver Upgraded version in semantic versioning format. @returns {boolean} Return true if the upgrade should be kept, otherwise it will be ignored. */ filterResults: (packageName, { current, currentVersionSemver, upgraded, upgradedVersionSemver }) => { const currentMajor = parseInt(currentVersionSemver[0]?.major, 10) const upgradedMajor = parseInt(upgradedVersionSemver?.major, 10) if (currentMajor && upgradedMajor) { return currentMajor >= upgradedMajor } return true } ``` For the SemVer type definition, see: https://git.coolaj86.com/coolaj86/semver-utils.js#semverutils-parse-semverstring ## filterVersion Usage: ncu --filterVersion [p] Include only versions matching the given string, wildcard, glob, comma-or-space-delimited list, /regex/, or predicate function. `--filterVersion` runs _before_ new versions are fetched, in contrast to `--filterResults` which runs _after_. You can also specify a custom function in your .ncurc.js file, or when importing npm-check-updates as a module. > :warning: The predicate function is only available in .ncurc.js or when importing npm-check-updates as a module, not on the command line. To convert a JSON config to a JS config, follow the instructions at https://github.com/raineorshine/npm-check-updates#config-functions. This function is an alias for the `filter` option function. ```js /** @param name The name of the dependency. @param semver A parsed Semver array of the current version. (See: https://git.coolaj86.com/coolaj86/semver-utils.js#semverutils-parse-semverstring) @returns True if the package should be included, false if it should be excluded. */ filterVersion: (name, semver) => { if (name.startsWith('@myorg/') && parseInt(semver[0]?.major) > 5) { return false } return true } ``` ## format Usage: ncu --format [value] Modify the output formatting or show additional information. Specify one or more comma-delimited values.

group	Groups packages by major, minor, patch, and major version zero updates.
ownerChanged	Shows if the package owner has changed.
repo	Infers and displays links to the package's source code repository. Requires packages to be installed.
time	Shows the publish time of each upgrade.
lines	Prints name@version on separate lines. Useful for piping to npm install.
installedVersion	Prints the exact current version number instead of a range.

## groupFunction Customize how packages are divided into groups when using `--format group`. Only available in .ncurc.js or when importing npm-check-updates as a module, not on the command line. To convert a JSON config to a JS config, follow the instructions at https://github.com/raineorshine/npm-check-updates#config-functions. ```js /** @param name The name of the dependency. @param defaultGroup The predefined group name which will be used by default. @param currentSpec The current version range in your package.json. @param upgradedSpec The upgraded version range that will be written to your package.json. @param upgradedVersion The upgraded version number returned by the registry. @returns A predefined group name ('major' | 'minor' | 'patch' | 'majorVersionZero' | 'none') or a custom string to create your own group. */ groupFunction: (name, defaultGroup, currentSpec, upgradedSpec, upgradedVersion) => { if (name === 'typescript' && defaultGroup === 'minor') { return 'major' } if (name.startsWith('@myorg/')) { return 'My Org' } return defaultGroup } ``` ## install Usage: ncu --install [value] Default: prompt Control the auto-install behavior.

always	Runs your package manager's install command automatically after upgrading.
never	Does not install and does not prompt.
prompt	Shows a message after upgrading that recommends an install, but does not install. In interactive mode, prompts for install. (default)

## packageManager Usage: ncu --packageManager [s] ncu -p [s] Specifies the package manager to use when looking up versions.

npm	System-installed npm. Default.
yarn	System-installed yarn. Automatically used if yarn.lock is present.
pnpm	System-installed pnpm. Automatically used if pnpm-lock.yaml is present.
bun	System-installed bun. Automatically used if bun.lock or bun.lockb is present.

## peer Usage: ncu --peer ncu --no-peer Check peer dependencies of installed packages and filter updates to compatible versions. Example: The following example demonstrates how `--peer` works, and how it uses peer dependencies from upgraded modules. The package ncu-test-peer-update has two versions published: - 1.0.0 has peer dependency `"ncu-test-return-version": "1.0.x"` - 1.1.0 has peer dependency `"ncu-test-return-version": "1.1.x"` Our test app has the following dependencies: "ncu-test-peer-update": "1.0.0", "ncu-test-return-version": "1.0.0" The latest versions of these packages are: "ncu-test-peer-update": "1.1.0", "ncu-test-return-version": "2.0.0" With `--peer`: ncu upgrades packages to the highest version that still adheres to the peer dependency constraints: ncu-test-peer-update 1.0.0 → 1.1.0 ncu-test-return-version 1.0.0 → 1.1.0 Without `--peer`: As a comparison: without using the `--peer` option, ncu will suggest the latest versions, ignoring peer dependencies: ncu-test-peer-update 1.0.0 → 1.1.0 ncu-test-return-version 1.0.0 → 2.0.0 ## registryType Usage: ncu --registryType [type] Specify whether `--registry` refers to a full npm registry or a simple JSON file.

npm

Default npm registry

json

Checks versions from a file or url to a simple JSON registry. Must include the `--registry` option. Example: // local file $ ncu --registryType json --registry ./registry.json // url $ ncu --registryType json --registry https://api.mydomain/registry.json // you can omit --registryType when the registry ends in .json $ ncu --registry ./registry.json $ ncu --registry https://api.mydomain/registry.json registry.json: { "prettier": "2.7.1", "typescript": "4.7.4" }

## reject Usage: ncu --reject [p] ncu -x [p] The inverse of `--filter`. Exclude package names matching the given string, wildcard, glob, comma-or-space-delimited list, /regex/, or predicate function. This will also exclude them from the `--peer` check. `--reject` runs _before_ new versions are fetched, in contrast to `--filterResults` which runs _after_. You can also specify a custom function in your .ncurc.js file, or when importing npm-check-updates as a module. > :warning: The predicate function is only available in .ncurc.js or when importing npm-check-updates as a module, not on the command line. To convert a JSON config to a JS config, follow the instructions at https://github.com/raineorshine/npm-check-updates#config-functions. ```js /** @param name The name of the dependency. @param semver A parsed Semver array of the current version. (See: https://git.coolaj86.com/coolaj86/semver-utils.js#semverutils-parse-semverstring) @returns True if the package should be excluded, false if it should be included. */ reject: (name, semver) => { if (name.startsWith('@myorg/')) { return true } return false } ``` ## rejectVersion Usage: ncu --rejectVersion [p] The inverse of `--filterVersion`. Exclude versions matching the given string, wildcard, glob, comma-or-space-delimited list, /regex/, or predicate function. `--rejectVersion` runs _before_ new versions are fetched, in contrast to `--filterResults` which runs _after_. You can also specify a custom function in your .ncurc.js file, or when importing npm-check-updates as a module. > :warning: The predicate function is only available in .ncurc.js or when importing npm-check-updates as a module, not on the command line. To convert a JSON config to a JS config, follow the instructions at https://github.com/raineorshine/npm-check-updates#config-functions. This function is an alias for the reject option function. ```js /** @param name The name of the dependency. @param semver A parsed Semver array of the current version. (See: https://git.coolaj86.com/coolaj86/semver-utils.js#semverutils-parse-semverstring) @returns True if the package should be excluded, false if it should be included. */ rejectVersion: (name, semver) => { if (name.startsWith('@myorg/') && parseInt(semver[0]?.major) > 5) { return true } return false } ``` ## target Usage: ncu --target [value] ncu -t [value] Determines the version to upgrade to. (default: "latest")

greatest	Upgrade to the highest version number published, regardless of release date or tag. Includes prereleases.
latest	Upgrade to whatever the package's "latest" git tag points to. Excludes prereleases unless --pre is specified.
minor	Upgrade to the highest minor version without bumping the major version.
newest	Upgrade to the version with the most recent publish date, even if there are other version numbers that are higher. Includes prereleases.
patch	Upgrade to the highest patch version without bumping the minor or major versions.
semver	Upgrade to the highest version within the semver range specified in your package.json.
@[tag]	Upgrade to the version published to a specific tag, e.g. 'next' or 'beta'.

e.g. ncu --target semver You can also specify a custom function in your .ncurc.js file, or when importing npm-check-updates as a module. > :warning: The predicate function is only available in .ncurc.js or when importing npm-check-updates as a module, not on the command line. To convert a JSON config to a JS config, follow the instructions at https://github.com/raineorshine/npm-check-updates#config-functions. ```js /** Upgrade major version zero to the next minor version, and everything else to latest. @param name The name of the dependency. @param semver A parsed Semver object of the upgraded version. (See: https://git.coolaj86.com/coolaj86/semver-utils.js#semverutils-parse-semverstring) @returns One of the valid target values (specified in the table above). */ target: (name, semver) => { if (parseInt(semver[0]?.major) === '0') return 'minor' return 'latest' } ``` ## Config File Add a `.ncurc.{json,yml,js,cjs}` file to your project directory to specify configuration information. For example, `.ncurc.json`: ```json { "upgrade": true, "filter": "svelte", "reject": ["@types/estree", "ts-node"] } ``` Options are merged with the following precedence: 1. Command line options 2. Local Config File (current working directory) 3. Project Config File (next to package.json) 4. User Config File (`$HOME`) You can also specify a custom config file name or path using the `--configFileName` or `--configFilePath` command line options. ### Config Functions Some options offer more advanced configuration using a function definition. These include [filter](https://github.com/raineorshine/npm-check-updates#filter), [filterVersion](https://github.com/raineorshine/npm-check-updates#filterversion), [filterResults](https://github.com/raineorshine/npm-check-updates#filterresults), [reject](https://github.com/raineorshine/npm-check-updates#reject), [rejectVersion](https://github.com/raineorshine/npm-check-updates#rejectversion), and [groupFunction](https://github.com/raineorshine/npm-check-updates#groupfunction). To define an options function, convert the config file to a JS file by adding the `.js` extension and setting module.exports: For example, `.ncurc.js`: ```js module.exports = { upgrade: true, filter: name => name.startsWith('@myorg/'), } ``` ### JSON Schema If you write `.ncurc` config files using json or yaml, you can add the JSON Schema to your IDE settings for completions. e.g. for VS Code: ```json "json.schemas": [ { "fileMatch": [ ".ncurc", ".ncurc.json", ], "url": "https://raw.githubusercontent.com/raineorshine/npm-check-updates/main/src/types/RunOptions.json" } ], "yaml.schemas": { "https://raw.githubusercontent.com/raineorshine/npm-check-updates/main/src/types/RunOptions.json": [ ".ncurc.yml", ] }, ``` ## Module/Programmatic Usage npm-check-updates can be imported as a module: ```js import ncu from 'npm-check-updates' const upgraded = await ncu.run({ // Pass any cli option packageFile: '../package.json', upgrade: true, // Defaults: // jsonUpgraded: true, // silent: true, }) console.log(upgraded) // { "mypackage": "^2.0.0", ... } ``` ## Contributing Contributions are happily accepted. I respond to all PR's and can offer guidance on where to make changes. For contributing tips see [CONTRIBUTING.md](https://github.com/raineorshine/npm-check-updates/blob/main/.github/CONTRIBUTING.md). ## Problems? [File an issue](https://github.com/raineorshine/npm-check-updates/issues). Please [search existing issues](https://github.com/raineorshine/npm-check-updates/issues?utf8=%E2%9C%93&q=is%3Aissue) first.

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