babel-preset-latest-node
babel preset latest for node 14 (Current), node 12 (Active LTS) node 10 (Maintenance LTS)
# babel 7
Since v2, this package requires `@babel/core@^7.0.0`. If you use babel 6, you can still use the version "1.0.0" of this package. If you want to migrate, you can read the [announcement](https://babeljs.io/blog/2018/08/27/7.0.0) and the [official migration guide](https://babeljs.io/docs/en/v7-migration).
## Alternatives
- [@babel/preset-env](https://www.npmjs.com/package/@babel/preset-env), especially `targets.node`
## Options
- `target`: `10`, `10.13`, `12`, `12.10`, `14` or `'current'` (`process.versions.node`)
- `loose`: Enable “loose” transformations for any plugins in this preset that allow them (Disabled by default).
- `modules` - Enable transformation of ES6 module syntax to another module type (Enabled by default to "commonjs"). Can be false to not transform modules, or "commonjs"
- `es2019` - Enable es2019 features (Enabled by default)
- `es2020` - Enable es2020 features (Enabled by default)
- `shippedProposals` - Enable features in stages but already available in recent node version (Enabled by default)
## [Compatibility Table](http://node.green/)
| Feature | Node 10 | Node 10.13 | Node 12 | Node 14 | Node 14.8 |
| --------------------------------------------------------------------------------------------------------------- | ------- | ---------- | ------- | --------- | --------- |
| ES2015
| | | | |
| [transform-modules-commonjs](https://www.npmjs.com/package/@babel/plugin-transform-modules-commonjs) | flag | flag | flag | with .mjs | with .mjs |
| ES2019
| | | | |
| [syntax-optional-catch-binding](https://www.npmjs.com/package/@babel/plugin-syntax-optional-catch-binding) | flag | yes | yes | yes | yes |
| [json-strings](https://www.npmjs.com/package/@babel/plugin-proposal-json-strings) | yes | yes | yes | yes | yes |
| ES2020
| | | | |
| [nullish-coalescing-operator](https://www.npmjs.com/package/@babel/plugin-proposal-nullish-coalescing-operator) | no | no | no | yes | yes |
| [optional-chaining](https://www.npmjs.com/package/@babel/plugin-proposal-optional-chaining) | no | no | no | yes | yes |
| Shipped Proposals
| | | | |
| [numeric-separator](https://www.npmjs.com/package/@babel/plugin-proposal-numeric-separator) | no | no | no | yes | yes |
| [top-level-await](https://www.npmjs.com/package/@babel/plugin-syntax-top-level-await) | no | no | no | no | yes |
Note that top level await is syntax only and is only available for supported versions.
## Install
```bash
npm install --save-dev @babel/core babel-preset-latest-node
yarn add --dev @babel/core babel-preset-latest-node
```
## Usage
### Via `.babelrc`
**.babelrc**
```json
{
"presets": ["latest-node"]
}
```
```json
{
"presets": [["latest-node", { "target": "current" }]]
}
```
### Via CLI
```sh
babel script.js --presets latest-node
```
### Via Node API
```javascript
require('babel-core').transform('code', {
presets: [require('babel-preset-latest-node')],
});
```
```javascript
require('babel-core').transform('code', {
presets: [[require('babel-preset-latest-node'), { target: 'current' }]],
});
```