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## Installation | ||
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```bash | ||
$ yarn add craco-plugin-env -D | ||
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# OR | ||
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$ npm i craco-plugin-env -D | ||
``` | ||
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## Usage | ||
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在 `craco.config.js` 文件中添加插件。 | ||
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```js | ||
const CracoEnvPlugin = require('craco-plugin-env') | ||
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module.exports = { | ||
plugins: [ | ||
{ | ||
plugin: CracoEnvPlugin, | ||
options: { | ||
path: __dirname, | ||
vars: {}, | ||
}, | ||
}, | ||
], | ||
} | ||
``` | ||
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## Configuration | ||
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您可以传递一个 `options` 对象来配置插件。 | ||
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- `options.path` | ||
- _Default:_ root | ||
- 用于加载 `.env` 文件的目录。可以是一个绝对路径,也可以是相对于项目根的路径。 | ||
- `options.vars` | ||
- _Default_: `{}` | ||
- 自定义环境变量。通过 `process.env` 获取。想要了解解析环境文件规则的细节,请参考 [dotenv](https://github.com/motdotla/dotenv)。 | ||
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## Mode | ||
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你可以在你的项目根目录中放置下列文件来指定环境变量: | ||
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``` | ||
.env # 在所有的环境中被载入 | ||
.env.local # 在所有的环境中被载入,但会被 git 忽略 | ||
.env.[mode] # 只在指定的模式中被载入 | ||
.env.[mode].local # 只在指定的模式中被载入,但会被 git 忽略 | ||
``` | ||
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你可以通过传递 `--mode` 选项参数为命令行覆写默认的模式。例如,如果你可以在构建命令中使用开发环境变量: | ||
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```diff | ||
/* package.json */ | ||
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"scripts": { | ||
"start": "craco start", | ||
"build": "craco build", | ||
+ "build:dev": "craco build --mode development" | ||
} | ||
``` | ||
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可参考 [Vue CLI](https://cli.vuejs.org/zh/guide/mode-and-env.html#模式)。 |
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const path = require('path') | ||
const dotenv = require('dotenv') | ||
const webpack = require('webpack') | ||
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function getModeName() { | ||
const index = process.argv.indexOf('--mode') | ||
return process.argv[index + 1] || '' | ||
} | ||
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function overrideCracoConfig({ cracoConfig, pluginOptions = {} }) { | ||
const mode = getModeName() | ||
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const dir = pluginOptions.path || process.cwd() | ||
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const basePath = path.resolve(dir, `.env${mode ? `.${mode}` : ''}`) | ||
const localPath = `${basePath}.local` | ||
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const load = envPath => { | ||
try { | ||
const env = dotenv.config({ path: envPath, debug: process.env.DEBUG }) | ||
return env.parsed | ||
} catch (err) { | ||
// only ignore error if file is not found | ||
if (err.toString().indexOf('ENOENT') < 0) { | ||
throw new Error(err.toString()) | ||
} | ||
} | ||
} | ||
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const plugin = new webpack.EnvironmentPlugin({ | ||
...pluginOptions.vars, | ||
...load(basePath), | ||
...load(localPath), | ||
}) | ||
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const originalPlugins = cracoConfig.webpack?.plugins | ||
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if (originalPlugins) { | ||
if ('add' in originalPlugins) { | ||
originalPlugins.add.push(plugin) | ||
} else { | ||
originalPlugins.push(plugin) | ||
} | ||
} else { | ||
cracoConfig.webpack.plugins = { add: [plugin] } | ||
} | ||
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return cracoConfig | ||
} | ||
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module.exports = { | ||
overrideCracoConfig, | ||
} |
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{ | ||
"name": "craco-plugin-env", | ||
"description": "An environment plugin for craco", | ||
"version": "1.0.0", | ||
"main": "index.js", | ||
"repository": "https://github.com/ponjs/craco-plugin-env.git", | ||
"keywords": [ | ||
"environment", | ||
"craco", | ||
"create-react-app" | ||
], | ||
"author": "ponjs", | ||
"license": "MIT", | ||
"bugs": { | ||
"url": "https://github.com/ponjs/craco-plugin-env/issues" | ||
}, | ||
"homepage": "https://github.com/ponjs/craco-plugin-env#readme", | ||
"dependencies": { | ||
"dotenv": "^10.0.0" | ||
} | ||
} |