JarCastingpackage-json 
Get metadata of a package from the npm registry
Install
$ npm install package-json
Usage
const packageJson = require('package-json');
(async () => {
console.log(await packageJson('ava'));
//=> {name: 'ava', ...}
// Also works with scoped packages
console.log(await packageJson('@sindresorhus/df'));
})();
API
packageJson(packageName, options?)
packageName
Type: string
Name of the package.
options
Type: object
version
Type: string
Default: latest
Package version such as 1.0.0 or a dist tag such as latest.
The version can also be in any format supported by the semver module. For example:
1- Get the latest1.x.x1.2- Get the latest1.2.x^1.2.3- Get the latest1.x.xbut at least1.2.3~1.2.3- Get the latest1.2.xbut at least1.2.3
fullMetadata
Type: boolean
Default: false
By default, only an abbreviated metadata object is returned for performance reasons. Read more.
allVersions
Type: boolean
Default: false
Return the main entry containing all versions.
registryUrl
Type: string
Default: Auto-detected
The registry URL is by default inferred from the npm defaults and .npmrc. This is beneficial as package-json and any project using it will work just like npm. This option is only intended for internal tools. You should not use this option in reusable packages. Prefer just using .npmrc whenever possible.
agent
Type: http.Agent | https.Agent | object | false
Overwrite the agent option that is passed down to got. This might be useful to add proxy support.
packageJson.PackageNotFoundError
The error thrown when the given package name cannot be found.
packageJson.VersionNotFoundError
The error thrown when the given package version cannot be found.
Authentication
Both public and private registries are supported, for both scoped and unscoped packages, as long as the registry uses either bearer tokens or basic authentication.
package-json for enterprise
Available as part of the Tidelift Subscription.
The maintainers of package-json and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.
Related
- package-json-cli - CLI for this module
- latest-version - Get the latest version of an npm package
- pkg-versions - Get the version numbers of a package from the npm registry
- npm-keyword - Get a list of npm packages with a certain keyword
- npm-user - Get user info of an npm user
- npm-email - Get the email of an npm user