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66 lines
2.1 KiB
Markdown
66 lines
2.1 KiB
Markdown
# Please upgrade Node [](https://www.npmjs.org/package/please-upgrade-node) [](https://travis-ci.org/typicode/please-upgrade-node) [](https://www.npmjs.com/package/please-upgrade-node)
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> :information_desk_person: show a message to your users to upgrade Node instead of a stacktrace
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It's common for new Node users to miss the `npm` engines warning when installing a CLI. This package displays a beginner-friendly message if their Node version is below the one expected.
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```sh
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$ node -v
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0.12
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$ modern-cli
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modern-cli requires at least version 6 of Node, please upgrade
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```
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## Install
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```sh
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npm install please-upgrade-node
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```
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```js
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#!/usr/bin/env node
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const pkg = require('./package.json')
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require('please-upgrade-node')(pkg)
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// Must run BEFORE requiring other modules
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```
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```js
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// package.json
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{
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"bin": "./bin.js",
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"engines": {
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"node": ">=6"
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}
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}
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```
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__Important__: `>=` is the only operator supported by `please-upgrade-node` (e.g. `>=6`, `>=6.0`, `>=6.0.0`).
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## Options
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You can also pass custom `exitCode` (default: `1`) or `message` function
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```js
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pleaseUpgradeNode(pkg, {
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exitCode: 0,
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message: function(requiredVersion) {
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return 'Oops, this program requires Node ' + requiredVersion
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}
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})
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```
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__Important__: to keep `message` function compatible with older versions of Node, avoid using ES6 features like `=>` or string interpolation.
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## See also
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* [pkg-ok](https://github.com/typicode/pkg-ok) - :ok_hand: Prevents publishing a module with bad paths
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* [husky](https://github.com/typicode/husky) - :dog: Git hooks made easy
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* [update-notifier](https://github.com/yeoman/update-notifier) - Update notifications for your CLI app
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Thanks to [zeit/serve](https://github.com/zeit/serve) for the error message inspiration.
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## License
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MIT - [Typicode :cactus:](https://github.com/typicode) - [Patreon](https://patreon.com/typicode)
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