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64 lines
1.9 KiB
Markdown
64 lines
1.9 KiB
Markdown
5 years ago
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# package-json [](https://travis-ci.org/sindresorhus/package-json)
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> Get the package.json of a package from the npm registry
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## Install
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```
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$ npm install --save package-json
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```
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## Usage
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```js
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const packageJson = require('package-json');
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packageJson('pageres', 'latest').then(json => {
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console.log(json);
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//=> {name: 'pageres', ...}
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});
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// also works with scoped packages
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packageJson('@company/package', 'latest').then(json => {
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console.log(json);
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//=> {name: 'package', ...}
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});
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```
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## API
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### packageJson(name, [version])
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You can optionally specify a version (e.g. `1.0.0`) or `latest`.
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If you don't specify a version you'll get the [main entry](http://registry.npmjs.org/pageres/) containing all versions.
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The version can also be in any format supported by the [semver](https://www.npmjs.com/package/semver) module. For example:
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- `1` - get the latest `1.x.x`
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- `1.2` - get the latest `1.2.x`
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- `^1.2.3` - get the latest `1.x.x` but at least `1.2.3`
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- `~1.2.3` - get the latest `1.2.x` but at least `1.2.3`
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## Authentication
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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.
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## Related
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- [package-json-cli](https://github.com/sindresorhus/package-json-cli) - CLI for this module
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- [latest-version](https://github.com/sindresorhus/latest-version) - Get the latest version of an npm package
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- [pkg-versions](https://github.com/sindresorhus/pkg-versions) - Get the version numbers of a package from the npm registry
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- [npm-keyword](https://github.com/sindresorhus/npm-keyword) - Get a list of npm packages with a certain keyword
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- [npm-user](https://github.com/sindresorhus/npm-user) - Get user info of an npm user
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- [npm-email](https://github.com/sindresorhus/npm-email) - Get the email of an npm user
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## License
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MIT © [Sindre Sorhus](http://sindresorhus.com)
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